1
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Robertson A, Miller DJ, Hull A, Butler BE. Quantifying myelin density in the feline auditory cortex. Brain Struct Funct 2024:10.1007/s00429-024-02821-4. [PMID: 38981886 DOI: 10.1007/s00429-024-02821-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 06/12/2024] [Indexed: 07/11/2024]
Abstract
The cerebral cortex comprises many distinct regions that differ in structure, function, and patterns of connectivity. Current approaches to parcellating these regions often take advantage of functional neuroimaging approaches that can identify regions involved in a particular process with reasonable spatial resolution. However, neuroanatomical biomarkers are also very useful in identifying distinct cortical regions either in addition to, or in place of functional measures. For example, differences in myelin density are thought to relate to functional differences between regions, are sensitive to individual patterns of experience, and have been shown to vary across functional hierarchies in a predictable manner. Accordingly, the current study provides quantitative stereological estimates of myelin density for each of the 13 regions that make up the feline auditory cortex. We demonstrate that significant differences can be observed between auditory cortical regions, with the highest myelin density observed in the regions that comprise the auditory core (i.e., the primary auditory cortex and anterior auditory field). Moreover, our myeloarchitectonic map suggests that myelin density varies in a hierarchical fashion that conforms to the traditional model of spatial organization in auditory cortex. Taken together, these results establish myelin as a useful biomarker for parcellating auditory cortical regions, and provide detailed estimates against which other, less invasive methods of quantifying cortical myelination may be compared.
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Affiliation(s)
- Austin Robertson
- Graduate Program in Neuroscience, University of Western Ontario, London, ON, Canada
| | - Daniel J Miller
- Department of Psychology, University of Western Ontario, 1151 Richmond Street N, London, ON, N6A5C1, Canada
- Department of Evolution, Ecology, and Behavior, University of Illinois Urbana-Champagne, Urbana, IL, USA
| | - Adam Hull
- Undergraduate Program in Neuroscience, University of Western Ontario, London, ON, Canada
| | - Blake E Butler
- Department of Psychology, University of Western Ontario, 1151 Richmond Street N, London, ON, N6A5C1, Canada.
- Western Institute for Neuroscience, University of Western Ontario, London, ON, Canada.
- National Centre for Audiology, University of Western Ontario, London, ON, Canada.
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2
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Yang T, Fan X, Hou B, Wang J, Chen X. Linguistic network in early deaf individuals: A neuroimaging meta-analysis. Neuroimage 2024:120720. [PMID: 38971484 DOI: 10.1016/j.neuroimage.2024.120720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024] Open
Abstract
This meta-analysis summarizes evidence from 44 neuroimaging experiments and characterizes the general linguistic network in early deaf individuals. Meta-analytic comparisons with hearing individuals found that a specific set of regions (in particular the left inferior frontal gyrus and posterior middle temporal gyrus) participates in supramodal language processing. In addition to previously described modality-specific differences, the present study showed that the left calcarine gyrus and the right caudate were additionally recruited in deaf compared with hearing individuals. In addition, this study showed that the bilateral posterior superior temporal gyrus is shaped by cross-modal plasticity, whereas the left frontotemporal areas are shaped by early language experience. Although an overall left-lateralized pattern for language processing was observed in the early deaf individuals, regional lateralization was altered in the inferior temporal gyrus and anterior temporal lobe. These findings indicate that the core language network functions in a modality-independent manner, and provide a foundation for determining the contributions of sensory and linguistic experiences in shaping the neural bases of language processing.
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Affiliation(s)
- Tengyu Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, the People's Republic of China
| | - Xinmiao Fan
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, the People's Republic of China
| | - Bo Hou
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, the People's Republic of China
| | - Jian Wang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, the People's Republic of China.
| | - Xiaowei Chen
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, the People's Republic of China.
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3
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Ocuto OL. Deaf children, home language environments, and reciprocal-contingent family interactions. JOURNAL OF DEAF STUDIES AND DEAF EDUCATION 2024; 29:322-334. [PMID: 38159302 DOI: 10.1093/deafed/enad063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 10/24/2023] [Accepted: 12/06/2023] [Indexed: 01/03/2024]
Abstract
Engaged communication between mother and a child in their early developmental stages is one of the predictors of children's development of higher-order thinking skills. For deaf children, this engaged communication between mother and child hinges on the home language environment (HLE) being fully accessible to the child. This research uses agogical phenomenology in exploring the lived experiences of participants' HLE where sign language is used, with particular focus on the opportunities for extended discourse. Data were collected via semistructured interviews with the deaf children and their parents and observations in the HLEs of five signing families with at least one deaf child in the southwestern United States. The aim of this study was to document and provide insights into how language use in deaf children's HLE can impact their knowledge development; these insights uncovered the essence of reciprocal and contingent family interactions as a central aspect of the deaf child's HLE. It is hoped that the qualitative phenomenological findings will frame subsequent quantitative investigations of the variability in language access to home language components.
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Affiliation(s)
- Oscar L Ocuto
- Department of Education, Gallaudet University, 800 Florida Avenue NE, Washington, DC, United States
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4
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Huang Y, Brosch M. Behavior-related visual activations in the auditory cortex of nonhuman primates. Prog Neurobiol 2024; 240:102637. [PMID: 38879074 DOI: 10.1016/j.pneurobio.2024.102637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 05/29/2024] [Accepted: 06/06/2024] [Indexed: 06/22/2024]
Abstract
While it is well established that sensory cortical regions traditionally thought to be unimodal can be activated by stimuli from modalities other than the dominant one, functions of such foreign-modal activations are still not clear. Here we show that visual activations in early auditory cortex can be related to whether or not the monkeys engaged in audio-visual tasks, to the time when the monkeys reacted to the visual component of such tasks, and to the correctness of the monkeys' response to the auditory component of such tasks. These relationships between visual activations and behavior suggest that auditory cortex can be recruited for visually-guided behavior and that visual activations can prime auditory cortex such that it is prepared for processing future sounds. Our study thus provides evidence that foreign-modal activations in sensory cortex can contribute to a subject's ability to perform tasks on stimuli from foreign and dominant modalities.
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Affiliation(s)
- Ying Huang
- Research Group Comparative Neuroscience, Leibniz Institute for Neurobiology, Brenneckestraße 6, Magdeburg 39118, Germany.
| | - Michael Brosch
- Research Group Comparative Neuroscience, Leibniz Institute for Neurobiology, Brenneckestraße 6, Magdeburg 39118, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke-University, Universitätsplatz 2, Magdeburg 39106, Germany
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5
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Tsai P, Latypov TH, Hung PSP, Halawani A, Srisaikaew P, Walker MR, Zhang AB, Wang W, Hassannia F, Barake R, Gordon KA, Ibrahim GM, Rutka J, Hodaie M. Structural connectivity changes in unilateral hearing loss. Cereb Cortex 2024; 34:bhae220. [PMID: 38896551 DOI: 10.1093/cercor/bhae220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 06/21/2024] Open
Abstract
Network connectivity, as mapped by the whole brain connectome, plays a crucial role in regulating auditory function. Auditory deprivation such as unilateral hearing loss might alter structural network connectivity; however, these potential alterations are poorly understood. Thirty-seven acoustic neuroma patients with unilateral hearing loss (19 left-sided and 18 right-sided) and 19 healthy controls underwent diffusion-weighted and T1-weighted imaging to assess edge strength, node strength, and global efficiency of the structural connectome. Edge strength was estimated by pair-wise normalized streamline density from tractography and connectomics. Node strength and global efficiency were calculated through graph theory analysis of the connectome. Pure-tone audiometry and word recognition scores were used to correlate the degree and duration of unilateral hearing loss with node strength and global efficiency. We demonstrate significantly stronger edge strength and node strength through the visual network, weaker edge strength and node strength in the somatomotor network, and stronger global efficiency in the unilateral hearing loss patients. No discernible correlations were observed between the degree and duration of unilateral hearing loss and the measures of node strength or global efficiency. These findings contribute to our understanding of the role of structural connectivity in hearing by facilitating visual network upregulation and somatomotor network downregulation after unilateral hearing loss.
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Affiliation(s)
- Pascale Tsai
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
| | - Timur H Latypov
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
| | - Peter Shih-Ping Hung
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
| | - Aisha Halawani
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
- Division of Neuroradiology, Joint Department of Medical Imaging, Toronto Western Hospital, University Health Network, 399 Bathurst St, Toronto, Ontario M5T 2S8, Canada
- Department of Medical Imaging, Ministry of the National Guard-Health Affairs, C967+PRM, King Abdul Aziz Medical City, Jeddah 22384, Saudi Arabia
| | - Patcharaporn Srisaikaew
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
| | - Matthew R Walker
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
| | - Ashley B Zhang
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
| | - Wanzhang Wang
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
| | - Fatemeh Hassannia
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, 600 University Ave, Toronto, Ontario M5G 1X5, Canada
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, Ontario M5S 1A8, Canada
| | - Rana Barake
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, 600 University Ave, Toronto, Ontario M5G 1X5, Canada
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, Ontario M5S 1A8, Canada
| | - Karen A Gordon
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, 600 University Ave, Toronto, Ontario M5G 1X5, Canada
- Department of Communication Disorders, The Hospital for Sick Children, 555 University Ave, Toronto, Ontario M5G 1X8, Canada
| | - George M Ibrahim
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, Ontario M5S 1A8, Canada
- Division of Neurosurgery, Department of Surgery, University of Toronto, 149 College St, Toronto, Ontario M5T 1P5, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College St, Toronto, M5S 3G9 Ontario M5S 3G9, Canada
| | - John Rutka
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, 600 University Ave, Toronto, Ontario M5G 1X5, Canada
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, Ontario M5S 1A8, Canada
| | - Mojgan Hodaie
- Krembil Research Institute, University Health Network, 60 Leonard Ave, Toronto, Ontario M5T 0S8, Canada
- Institute of Medical Science, University of Toronto, 6 Queen's Park Cres, Toronto, Ontario M5S 3H2, Canada
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, Ontario M5S 1A8, Canada
- Division of Neurosurgery, Department of Surgery, University of Toronto, 149 College St, Toronto, Ontario M5T 1P5, Canada
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6
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Norman LJ, Hartley T, Thaler L. Changes in primary visual and auditory cortex of blind and sighted adults following 10 weeks of click-based echolocation training. Cereb Cortex 2024; 34:bhae239. [PMID: 38897817 PMCID: PMC11186672 DOI: 10.1093/cercor/bhae239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 05/14/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Recent work suggests that the adult human brain is very adaptable when it comes to sensory processing. In this context, it has also been suggested that structural "blueprints" may fundamentally constrain neuroplastic change, e.g. in response to sensory deprivation. Here, we trained 12 blind participants and 14 sighted participants in echolocation over a 10-week period, and used MRI in a pre-post design to measure functional and structural brain changes. We found that blind participants and sighted participants together showed a training-induced increase in activation in left and right V1 in response to echoes, a finding difficult to reconcile with the view that sensory cortex is strictly organized by modality. Further, blind participants and sighted participants showed a training induced increase in activation in right A1 in response to sounds per se (i.e. not echo-specific), and this was accompanied by an increase in gray matter density in right A1 in blind participants and in adjacent acoustic areas in sighted participants. The similarity in functional results between sighted participants and blind participants is consistent with the idea that reorganization may be governed by similar principles in the two groups, yet our structural analyses also showed differences between the groups suggesting that a more nuanced view may be required.
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Affiliation(s)
- Liam J Norman
- Department of Psychology, Durham University, Durham, DH1 3LE, UK
| | - Tom Hartley
- Department of Psychology and York Biomedical Research Institute, University of York, Heslington, YO10 5DD, UK
| | - Lore Thaler
- Department of Psychology, Durham University, Durham, DH1 3LE, UK
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7
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Deroche MLD, Wolfe J, Neumann S, Manning J, Hanna L, Towler W, Wilson C, Bien AG, Miller S, Schafer E, Gemignani J, Alemi R, Muthuraman M, Koirala N, Gracco VL. Cross-modal plasticity in children with cochlear implant: converging evidence from EEG and functional near-infrared spectroscopy. Brain Commun 2024; 6:fcae175. [PMID: 38846536 PMCID: PMC11154148 DOI: 10.1093/braincomms/fcae175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 04/02/2024] [Accepted: 05/17/2024] [Indexed: 06/09/2024] Open
Abstract
Over the first years of life, the brain undergoes substantial organization in response to environmental stimulation. In a silent world, it may promote vision by (i) recruiting resources from the auditory cortex and (ii) making the visual cortex more efficient. It is unclear when such changes occur and how adaptive they are, questions that children with cochlear implants can help address. Here, we examined 7-18 years old children: 50 had cochlear implants, with delayed or age-appropriate language abilities, and 25 had typical hearing and language. High-density electroencephalography and functional near-infrared spectroscopy were used to evaluate cortical responses to a low-level visual task. Evidence for a 'weaker visual cortex response' and 'less synchronized or less inhibitory activity of auditory association areas' in the implanted children with language delays suggests that cross-modal reorganization can be maladaptive and does not necessarily strengthen the dominant visual sense.
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Affiliation(s)
- Mickael L D Deroche
- Department of Psychology, Concordia University, Montreal, Quebec, Canada, H4B 1R6
| | - Jace Wolfe
- Hearts for Hearing Foundation, Oklahoma City, OK 73120, USA
| | - Sara Neumann
- Hearts for Hearing Foundation, Oklahoma City, OK 73120, USA
| | - Jacy Manning
- Hearts for Hearing Foundation, Oklahoma City, OK 73120, USA
| | - Lindsay Hanna
- Hearts for Hearing Foundation, Oklahoma City, OK 73120, USA
| | - Will Towler
- Hearts for Hearing Foundation, Oklahoma City, OK 73120, USA
| | - Caleb Wilson
- Department of Otolaryngology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Alexander G Bien
- Department of Otolaryngology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Sharon Miller
- Department of Audiology & Speech-Language Pathology, University of North Texas, Denton, TX 76201, USA
| | - Erin Schafer
- Department of Audiology & Speech-Language Pathology, University of North Texas, Denton, TX 76201, USA
| | - Jessica Gemignani
- Department of Developmental and Social Psychology, University of Padova, 35131 Padua, Italy
| | - Razieh Alemi
- Department of Psychology, Concordia University, Montreal, Quebec, Canada, H4B 1R6
| | - Muthuraman Muthuraman
- Section of Neural Engineering with Signal Analytics and Artificial Intelligence, Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany
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8
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Sacco A, Gordon SG, Lomber SG. Connectome alterations following perinatal deafness in the cat. Neuroimage 2024; 290:120554. [PMID: 38431180 DOI: 10.1016/j.neuroimage.2024.120554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024] Open
Abstract
Following sensory deprivation, areas and networks in the brain may adapt and reorganize to compensate for the loss of input. These adaptations are manifestations of compensatory crossmodal plasticity, which has been documented in both human and animal models of deafness-including the domestic cat. Although there are abundant examples of structural plasticity in deaf felines from retrograde tracer-based studies, there is a lack of diffusion-based knowledge involving this model compared to the current breadth of human research. The purpose of this study was to explore white matter structural adaptations in the perinatally-deafened cat via tractography, increasing the methodological overlap between species. Plasticity was examined by identifying unique group connections and assessing altered connectional strength throughout the entirety of the brain. Results revealed a largely preserved connectome containing a limited number of group-specific or altered connections focused within and between sensory networks, which is generally corroborated by deaf feline anatomical tracer literature. Furthermore, five hubs of cortical plasticity and altered communication following perinatal deafness were observed. The limited differences found in the present study suggest that deafness-induced crossmodal plasticity is largely built upon intrinsic structural connections, with limited remodeling of underlying white matter.
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Affiliation(s)
- Alessandra Sacco
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada
| | - Stephen G Gordon
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada
| | - Stephen G Lomber
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Physiology, McGill University, Montreal, Quebec, Canada.
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9
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Kumar U, Dhanik K, Mishra M, Pandey HR, Keshri A. Mapping the unique neural engagement in deaf individuals during picture, word, and sign language processing: fMRI study. Brain Imaging Behav 2024:10.1007/s11682-024-00878-7. [PMID: 38523177 DOI: 10.1007/s11682-024-00878-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2024] [Indexed: 03/26/2024]
Abstract
Employing functional magnetic resonance imaging (fMRI) techniques, we conducted a comprehensive analysis of neural responses during sign language, picture, and word processing tasks in a cohort of 35 deaf participants and contrasted these responses with those of 35 hearing counterparts. Our voxel-based analysis unveiled distinct patterns of brain activation during language processing tasks. Deaf individuals exhibited robust bilateral activation in the superior temporal regions during sign language processing, signifying the profound neural adaptations associated with sign comprehension. Similarly, during picture processing, the deaf cohort displayed activation in the right angular, right calcarine, right middle temporal, and left angular gyrus regions, elucidating the neural dynamics engaged in visual processing tasks. Intriguingly, during word processing, the deaf group engaged the right insula and right fusiform gyrus, suggesting compensatory mechanisms at play during linguistic tasks. Notably, the control group failed to manifest additional or distinctive regions in any of the tasks when compared to the deaf cohort, underscoring the unique neural signatures within the deaf population. Multivariate Pattern Analysis (MVPA) of functional connectivity provided a more nuanced perspective on connectivity patterns across tasks. Deaf participants exhibited significant activation in a myriad of brain regions, including bilateral planum temporale (PT), postcentral gyrus, insula, and inferior frontal regions, among others. These findings underscore the intricate neural adaptations in response to auditory deprivation. Seed-based connectivity analysis, utilizing the PT as a seed region, revealed unique connectivity pattern across tasks. These connectivity dynamics provide valuable insights into the neural interplay associated with cross-modal plasticity.
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Affiliation(s)
- Uttam Kumar
- Centre of Bio-Medical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences Campus, Lucknow, Uttar Pradesh, 226014, India.
| | - Kalpana Dhanik
- Centre of Bio-Medical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences Campus, Lucknow, Uttar Pradesh, 226014, India
| | - Mrutyunjaya Mishra
- Department of Special Education (Hearing Impairments), Dr. Shakuntala Misra National Rehabilitation University, Lucknow, India
| | - Himanshu R Pandey
- Centre of Bio-Medical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences Campus, Lucknow, Uttar Pradesh, 226014, India
| | - Amit Keshri
- Department of Neuro-Otology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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10
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Fernández Del Campo IS, Carmona-Barrón VG, Diaz I, Plaza I, Alvarado JC, Merchán MA. Multisession anodal epidural direct current stimulation of the auditory cortex delays the progression of presbycusis in the Wistar rat. Hear Res 2024; 444:108969. [PMID: 38350175 DOI: 10.1016/j.heares.2024.108969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/23/2024] [Accepted: 02/02/2024] [Indexed: 02/15/2024]
Abstract
Presbycusis or age-related hearing loss (ARHL) is one of the most prevalent chronic health problems facing aging populations. Along the auditory pathway, the stations involved in transmission and processing, function as a system of interconnected feedback loops. Regulating hierarchically auditory processing, auditory cortex (AC) neuromodulation can, accordingly, activate both peripheral and central plasticity after hearing loss. However, previous ARHL-prevention interventions have mainly focused on preserving the structural and functional integrity of the inner ear, overlooking the central auditory system. In this study, using an animal model of spontaneous ARHL, we aim at assessing the effects of multisession epidural direct current stimulation of the AC through stereotaxic implantation of a 1-mm silver ball anode in Wistar rats. Consisting of 7 sessions (0.1 mA/10 min), on alternate days, in awake animals, our stimulation protocol was applied at the onset of hearing loss (threshold shift detection at 16 months). Click- and pure-tone auditory brainstem responses (ABRs) were analyzed in two animal groups, namely electrically stimulated (ES) and non-stimulated (NES) sham controls, comparing recordings at 18 months of age. At 18 months, NES animals showed significantly increased threshold shifts, decreased wave amplitudes, and increased wave latencies after click and tonal ABRs, reflecting a significant, spontaneous ARHL evolution. Conversely, in ES animals, no significant differences were detected in any of these parameters when comparing 16 and 18 months ABRs, indicating a delay in ARHL progression. Electrode placement in the auditory cortex was accurate, and the stimulation did not cause significant damage, as shown by the limited presence of superficial reactive microglial cells after IBA1 immunostaining. In conclusion, multisession DC stimulation of the AC has a protective effect on auditory function, delaying the progression of presbycusis.
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Affiliation(s)
- Inés S Fernández Del Campo
- Lab.4 Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León. University of Salamanca. Salamanca, Spain
| | - Venezia G Carmona-Barrón
- Lab.4 Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León. University of Salamanca. Salamanca, Spain
| | - I Diaz
- Lab.4 Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León. University of Salamanca. Salamanca, Spain
| | - I Plaza
- Lab.4 Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León. University of Salamanca. Salamanca, Spain
| | - J C Alvarado
- Facultad de Medicina, IDINE, Universidad de Castilla la Mancha, Albacete, Spain
| | - M A Merchán
- Lab.4 Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León. University of Salamanca. Salamanca, Spain.
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11
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Corina DP, Coffey-Corina S, Pierotti E, Mankel K, Miller LM. Electrophysiological study of visual processing in children with cochlear implants. Neuropsychologia 2024; 194:108774. [PMID: 38145800 DOI: 10.1016/j.neuropsychologia.2023.108774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 12/27/2023]
Abstract
Electrophysiological studies of congenitally deaf children and adults have reported atypical visual evoked potentials (VEPs) which have been associated with both behavioral enhancements of visual attention as well as poorer performance and outcomes in tests of spoken language speech processing. This pattern has often been interpreted as a maladaptive consequence of early auditory deprivation, whereby a remapping of auditory cortex by the visual system ultimately reduces resources necessary for optimal rehabilitative outcomes of spoken language acquisition and use. Making use of a novel electrophysiological paradigm, we compare VEPs in children with severe to profound congenital deafness who received a cochlear implant(s) prior to 31 months (n = 28) and typically developing age matched controls (n = 28). We observe amplitude enhancements and in some cases latency differences in occipitally expressed P1 and N1 VEP components in CI-using children as well as an early frontal negativity, N1a. We relate these findings to developmental factors such as chronological age and spoken language understanding. We further evaluate whether VEPs are additionally modulated by auditory stimulation. Collectively, these data provide a means to examine the extent to which atypical VEPs are consistent with prior accounts of maladaptive cross-modal plasticity. Our results support a view that VEP changes reflect alterations to visual-sensory attention and saliency mechanisms rather than a re-mapping of auditory cortex. The present data suggests that early auditory deprivation may have temporally prolonged effects on visual system processing even after activation and use of cochlear implant.
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Affiliation(s)
- David P Corina
- Center for Mind and Brain, University of California, Davis, USA; Department of Linguistics, University of California, Davis, USA; Department of Psychology, University of California, Davis, USA.
| | - S Coffey-Corina
- Center for Mind and Brain, University of California, Davis, USA
| | - E Pierotti
- Center for Mind and Brain, University of California, Davis, USA; Department of Psychology, University of California, Davis, USA
| | - Kelsey Mankel
- Center for Mind and Brain, University of California, Davis, USA
| | - Lee M Miller
- Center for Mind and Brain, University of California, Davis, USA; Department of Neurobiology, Physiology and Behavior, University of California, Davis, USA; Department of Otolaryngology / Head and Neck Surgery, University of California, Davis, USA
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12
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Kumar U, Dhanik K. Decoding auditory deprivation: resting-state fMRI insights into deafness and brain plasticity. Brain Struct Funct 2024:10.1007/s00429-023-02757-1. [PMID: 38329542 DOI: 10.1007/s00429-023-02757-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/29/2023] [Indexed: 02/09/2024]
Abstract
Deafness, as a profound manifestation of sensory deprivation, prompts a cascade of intricate cerebral adaptations. In this study, involving 35 deaf individuals and 35 hearing controls, we utilized resting-state functional magnetic resonance imaging (rs-fMRI) to delve into the depths of functional connectivity nuances distinguishing deaf individuals from their hearing counterparts. Leading our analytical approach was the application of multi-voxel pattern analysis (fc-MVPA). This advanced method provided a refined perspective, revealing amplified neural connectivity within the deaf population. Notably, regions such as the left postcentral somatosensory association cortex, the anterior and posterior corridors of the left superior temporal gyrus (STG), and the left mid-temporal lobe were identified as hotspots of heightened connectivity. Further, fc-MVPA shed light on intricate interaction effects, which became more pronounced when examining variables such as the duration of auditory deprivation and the extent of sign language exposure. These interactions were particularly evident in the premotor and left frontal mid-orbital regions. Complementing this, seed-based connectivity assessments illuminated pronounced coupling dynamics within the left STG spectrum. Concurrently, local correlation (LCOR) value analysis in the deaf group revealed significant shifts in the right superior STG and bilateral precuneus. In addition, amplitude of low-frequency fluctuation (ALFF) evaluations indicated modulations in the bilateral mid cingulum and left superior mid frontal gyrus. This comprehensive, fc-MVPA-driven exploration uncovers the multifaceted functional adaptations resulting from deafness, highlighting the profound plasticity of the human brain and its potential implications for targeted rehabilitative strategies.
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Affiliation(s)
- Uttam Kumar
- Centre of Bio-Medical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences Campus, Lucknow, Uttar Pradesh, 226014, India.
| | - Kalpana Dhanik
- Centre of Bio-Medical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences Campus, Lucknow, Uttar Pradesh, 226014, India
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Jelinek J, Johne M, Alam M, Krauss JK, Kral A, Schwabe K. Hearing loss in juvenile rats leads to excessive play fighting and hyperactivity, mild cognitive deficits and altered neuronal activity in the prefrontal cortex. CURRENT RESEARCH IN NEUROBIOLOGY 2024; 6:100124. [PMID: 38616957 PMCID: PMC11015060 DOI: 10.1016/j.crneur.2024.100124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 04/16/2024] Open
Abstract
Background In children, hearing loss has been associated with hyperactivity, disturbed social interaction, and risk of cognitive disturbances. Mechanistic explanations of these relations sometimes involve language. To investigate the effect of hearing loss on behavioral deficits in the absence of language, we tested the impact of hearing loss in juvenile rats on motor, social, and cognitive behavior and on physiology of prefrontal cortex. Methods Hearing loss was induced in juvenile (postnatal day 14) male Sprague-Dawley rats by intracochlear injection of neomycin under general anesthesia. Sham-operated and non-operated hearing rats served as controls. One week after surgery auditory brainstem response (ABR) measurements verified hearing loss or intact hearing in sham-operated and non-operated controls. All rats were then tested for locomotor activity (open field), coordination (Rotarod), and for social interaction during development in weeks 1, 2, 4, 8, 16, and 24 after surgery. From week 8 on, rats were trained and tested for spatial learning and memory (4-arm baited 8-arm radial maze test). In a final setting, neuronal activity was recorded in the medial prefrontal cortex (mPFC). Results In the open field deafened rats moved faster and covered more distance than sham-operated and non-operated controls from week 8 on (both p < 0.05). Deafened rats showed significantly more play fighting during development (p < 0.05), whereas other aspects of social interaction, such as following, were not affected. Learning of the radial maze test was not impaired in deafened rats (p > 0.05), but rats used less next-arm entries than other groups indicating impaired concept learning (p < 0.05). In the mPFC neuronal firing rate was reduced and enhanced irregular firing was observed. Moreover, oscillatory activity was altered, both within the mPFC and in coherence of mPFC with the somatosensory cortex (p < 0.05). Conclusions Hearing loss in juvenile rats leads to hyperactive behavior and pronounced play-fighting during development, suggesting a causal relationship between hearing loss and cognitive development. Altered neuronal activities in the mPFC after hearing loss support such effects on neuronal networks outside the central auditory system. This animal model provides evidence of developmental consequences of juvenile hearing loss on prefrontal cortex in absence of language as potential confounding factor.
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Affiliation(s)
- Jonas Jelinek
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Marie Johne
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Joachim K. Krauss
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Andrej Kral
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
- Institute of AudioNeuroTechnology, Hannover Medical School, Stadtfelddamm 34, 30625, Hanover, Germany
- Department of Experimental Otology of the ENT Clinics, Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
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Yu L, Xu J. The Development of Multisensory Integration at the Neuronal Level. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1437:153-172. [PMID: 38270859 DOI: 10.1007/978-981-99-7611-9_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Multisensory integration is a fundamental function of the brain. In the typical adult, multisensory neurons' response to paired multisensory (e.g., audiovisual) cues is significantly more robust than the corresponding best unisensory response in many brain regions. Synthesizing sensory signals from multiple modalities can speed up sensory processing and improve the salience of outside events or objects. Despite its significance, multisensory integration is testified to be not a neonatal feature of the brain. Neurons' ability to effectively combine multisensory information does not occur rapidly but develops gradually during early postnatal life (for cats, 4-12 weeks required). Multisensory experience is critical for this developing process. If animals were restricted from sensing normal visual scenes or sounds (deprived of the relevant multisensory experience), the development of the corresponding integrative ability could be blocked until the appropriate multisensory experience is obtained. This section summarizes the extant literature on the development of multisensory integration (mainly using cat superior colliculus as a model), sensory-deprivation-induced cross-modal plasticity, and how sensory experience (sensory exposure and perceptual learning) leads to the plastic change and modification of neural circuits in cortical and subcortical areas.
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Affiliation(s)
- Liping Yu
- Key Laboratory of Brain Functional Genomics (Ministry of Education and Shanghai), School of Life Sciences, East China Normal University, Shanghai, China.
| | - Jinghong Xu
- Key Laboratory of Brain Functional Genomics (Ministry of Education and Shanghai), School of Life Sciences, East China Normal University, Shanghai, China
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15
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Ruttorf M, Tal Z, Amaral L, Fang F, Bi Y, Almeida J. Neuroplastic changes in functional wiring in sensory cortices of the congenitally deaf: A network analysis. Hum Brain Mapp 2023; 44:6523-6536. [PMID: 37956260 PMCID: PMC10681644 DOI: 10.1002/hbm.26530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/10/2023] [Accepted: 10/22/2023] [Indexed: 11/15/2023] Open
Abstract
Congenital sensory deprivation induces significant changes in the structural and functional organisation of the brain. These are well-characterised by cross-modal plasticity, in which deprived cortical areas are recruited to process information from non-affected sensory modalities, as well as by other neuroplastic alterations within regions dedicated to the remaining senses. Here, we analysed visual and auditory networks of congenitally deaf and hearing individuals during different visual tasks to assess changes in network community structure and connectivity patterns due to congenital deafness. In the hearing group, the nodes are clearly divided into three communities (visual, auditory and subcortical), whereas in the deaf group a fourth community consisting mainly of bilateral superior temporal sulcus and temporo-insular regions is present. Perhaps more importantly, the right lateral geniculate body, as well as bilateral thalamus and pulvinar joined the auditory community of the deaf. Moreover, there is stronger connectivity between bilateral thalamic and pulvinar and auditory areas in the deaf group, when compared to the hearing group. No differences were found in the number of connections of these nodes to visual areas. Our findings reveal substantial neuroplastic changes occurring within the auditory and visual networks caused by deafness, emphasising the dynamic nature of the sensory systems in response to congenital deafness. Specifically, these results indicate that in the deaf but not the hearing group, subcortical thalamic nuclei are highly connected to auditory areas during processing of visual information, suggesting that these relay areas may be responsible for rerouting visual information to the auditory cortex under congenital deafness.
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Affiliation(s)
- Michaela Ruttorf
- Computer Assisted Clinical MedicineHeidelberg UniversityMannheimGermany
- Mannheim Institute for Intelligent Systems in MedicineHeidelberg UniversityMannheimGermany
| | - Zohar Tal
- Proaction LaboratoryUniversity of CoimbraPortugal
- Faculty of Psychology and Educational SciencesUniversity of CoimbraPortugal
| | - Lénia Amaral
- Department of NeuroscienceGeorgetown University Medical CenterWashingtonDistrict of ColumbiaUSA
| | - Fang Fang
- School of Psychological and Cognitive Sciences and Beijing Key Laboratory of Behavior and Mental HealthPeking UniversityBeijingChina
- IDG/McGovern Institute for Brain ResearchPeking UniversityBeijingChina
- Peking‐Tsinghua Center for Life SciencesPeking UniversityBeijingChina
| | - Yanchao Bi
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern, Institute for Brain ResearchBeijing Normal UniversityBeijingChina
- Beijing Key Laboratory of Brain Imaging and ConnectomicsBeijing Normal UniversityBeijingChina
- Chinese Institute for Brain ResearchBeijingChina
| | - Jorge Almeida
- Proaction LaboratoryUniversity of CoimbraPortugal
- Faculty of Psychology and Educational SciencesUniversity of CoimbraPortugal
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16
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Li YT, Bai K, Li GZ, Hu B, Chen JW, Shang YX, Yu Y, Chen ZH, Zhang C, Yan LF, Cui GB, Lu LJ, Wang W. Functional to structural plasticity in unilateral sudden sensorineural hearing loss: neuroimaging evidence. Neuroimage 2023; 283:120437. [PMID: 37924896 DOI: 10.1016/j.neuroimage.2023.120437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023] Open
Abstract
A cortical plasticity after long-duration single side deafness (SSD) is advocated with neuroimaging evidence while little is known about the short-duration SSDs. In this case-cohort study, we recruited unilateral sudden sensorineural hearing loss (SSNHL) patients and age-, gender-matched health controls (HC), followed by comprehensive neuroimaging analyses. The primary outcome measures were temporal alterations of varied dynamic functional network connectivity (dFNC) states, neurovascular coupling (NVC) and brain region volume at different stages of SSNHL. The secondary outcome measures were pure-tone audiograms of SSNHL patients before and after treatment. A total of 38 SSNHL patients (21 [55%] male; mean [standard deviation] age, 45.05 [15.83] years) and 44 HC (28 [64%] male; mean [standard deviation] age, 43.55 [12.80] years) were enrolled. SSNHL patients were categorized into subgroups based on the time from disease onset to the initial magnetic resonance imaging scan: early- (n = 16; 1-6 days), intermediate- (n = 9; 7-13 days), and late- stage (n = 13; 14-30 days) groups. We first identified slow state transitions between varied dFNC states at early-stage SSNHL, then revealed the decreased NVC restricted to the auditory cortex at the intermediate- and late-stage SSNHL. Finally, a significantly decreased volume of the left medial superior frontal gyrus (SFGmed) was observed only in the late-stage SSNHL cohort. Furthermore, the volume of the left SFGmed is robustly correlated with both disease duration and patient prognosis. Our study offered neuroimaging evidence for the evolvement from functional to structural brain alterations of SSNHL patients with disease duration less than 1 month, which may explain, from a neuroimaging perspective, why early-stage SSNHL patients have better therapeutic responses and hearing recovery.
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Affiliation(s)
- Yu-Ting Li
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Ke Bai
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Gan-Ze Li
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Bo Hu
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Jia-Wei Chen
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China.
| | - Yu-Xuan Shang
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Ying Yu
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Zhu-Hong Chen
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Chi Zhang
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Lin-Feng Yan
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Guang-Bin Cui
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
| | - Lian-Jun Lu
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China.
| | - Wen Wang
- Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an 710038, Shaanxi, China.
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17
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Abstract
Neurological insults, such as congenital blindness, deafness, amputation, and stroke, often result in surprising and impressive behavioural changes. Cortical reorganisation, which refers to preserved brain tissue taking on a new functional role, is often invoked to account for these behavioural changes. Here, we revisit many of the classical animal and patient cortical remapping studies that spawned this notion of reorganisation. We highlight empirical, methodological, and conceptual problems that call this notion into doubt. We argue that appeal to the idea of reorganisation is attributable in part to the way that cortical maps are empirically derived. Specifically, cortical maps are often defined based on oversimplified assumptions of 'winner-takes-all', which in turn leads to an erroneous interpretation of what it means when these maps appear to change. Conceptually, remapping is interpreted as a circuit receiving novel input and processing it in a way unrelated to its original function. This implies that neurons are either pluripotent enough to change what they are tuned to or that a circuit can change what it computes. Instead of reorganisation, we argue that remapping is more likely to occur due to potentiation of pre-existing architecture that already has the requisite representational and computational capacity pre-injury. This architecture can be facilitated via Hebbian and homeostatic plasticity mechanisms. Crucially, our revised framework proposes that opportunities for functional change are constrained throughout the lifespan by the underlying structural 'blueprint'. At no period, including early in development, does the cortex offer structural opportunities for functional pluripotency. We conclude that reorganisation as a distinct form of cortical plasticity, ubiquitously evoked with words such as 'take-over'' and 'rewiring', does not exist.
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Affiliation(s)
- Tamar R Makin
- MRC Cognition and Brain Sciences Unit, University of CambridgeCambridgeUnited Kingdom
| | - John W Krakauer
- Department of Neuroscience, Johns Hopkins University School of MedicineBaltimoreUnited States
- Department of Neurology, Johns Hopkins University School of MedicineBaltimoreUnited States
- The Santa Fe InstituteSanta FeUnited States
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18
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Brannick S, Vibell JF. Motion aftereffects in vision, audition, and touch, and their crossmodal interactions. Neuropsychologia 2023; 190:108696. [PMID: 37793544 DOI: 10.1016/j.neuropsychologia.2023.108696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/06/2023]
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19
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Podury A, Jiam NT, Kim M, Donnenfield JI, Dhand A. Hearing and sociality: the implications of hearing loss on social life. Front Neurosci 2023; 17:1245434. [PMID: 37854291 PMCID: PMC10579609 DOI: 10.3389/fnins.2023.1245434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/18/2023] [Indexed: 10/20/2023] Open
Abstract
Hearing is essential to the formation of social relationships and is the principal afferent of social life. Yet hearing loss, which is one of the most prevalent forms of sensory disability worldwide and is critical for social development, has received little attention from the social interventionalist perspective. The purpose of this mini-review is to describe the basic neurobiological principles of hearing and to explore the reciprocal relationships between social support, hearing loss, and its psychosocial comorbidities. We also discuss the role of social enrichment in sensorineural recovery and identify open questions within the fields of hearing physiology and social networks.
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Affiliation(s)
- Archana Podury
- Harvard Medical School, Boston, MA, United States
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States
- Department of Neurology, Brigham and Women’s Hospital, Boston, MA, United States
- Department of Otolaryngology-Head & Neck Surgery, University of California, San Diego, San Diego, CA, United States
| | - Nicole T. Jiam
- Harvard Medical School, Boston, MA, United States
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States
| | - Minsu Kim
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, United States
| | | | - Amar Dhand
- Harvard Medical School, Boston, MA, United States
- Department of Neurology, Brigham and Women’s Hospital, Boston, MA, United States
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20
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Merrikhi Y, Mirzaei A, Kok MA, Meredith MA, Lomber SG. Deafness induces complete crossmodal plasticity in a belt region of dorsal auditory cortex. Eur J Neurosci 2023; 58:3058-3073. [PMID: 37408361 DOI: 10.1111/ejn.16075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 06/03/2023] [Accepted: 06/13/2023] [Indexed: 07/07/2023]
Abstract
Many neural areas, where patterned activity is lost following deafness, have the capacity to become activated by the remaining sensory systems. This crossmodal plasticity can be measured at perceptual/behavioural as well as physiological levels. The dorsal zone (DZ) of auditory cortex of deaf cats is involved in supranormal visual motion detection, but its physiological level of crossmodal reorganisation is not well understood. The present study of early-deaf DZ (and hearing controls) used multiple single-channel recording methods to examine neuronal responses to visual, auditory, somatosensory and combined stimulation. In early-deaf DZ, no auditory activation was observed, but 100% of the neurons were responsive to visual cues of which 21% were also influenced by somatosensory stimulation. Visual and somatosensory responses were not anatomically organised as they are in hearing cats, and fewer multisensory neurons were present in the deaf condition. These crossmodal physiological results closely correspond with and support the perceptual/behavioural enhancements that occur following hearing loss.
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Affiliation(s)
- Yaser Merrikhi
- Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Ali Mirzaei
- Department of Biology, Faculty of Science, University of Mazandaran, Babolsar, Iran
| | - Melanie A Kok
- Graduate Program in Neuroscience, University of Western Ontario, London, Ontario, Canada
| | - M Alex Meredith
- Department of Anatomy and Neurobiology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Stephen G Lomber
- Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
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21
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Damera SR, Malone PS, Stevens BW, Klein R, Eberhardt SP, Auer ET, Bernstein LE, Riesenhuber M. Metamodal Coupling of Vibrotactile and Auditory Speech Processing Systems through Matched Stimulus Representations. J Neurosci 2023; 43:4984-4996. [PMID: 37197979 PMCID: PMC10324991 DOI: 10.1523/jneurosci.1710-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 03/10/2023] [Accepted: 04/29/2023] [Indexed: 05/19/2023] Open
Abstract
It has been postulated that the brain is organized by "metamodal," sensory-independent cortical modules capable of performing tasks (e.g., word recognition) in both "standard" and novel sensory modalities. Still, this theory has primarily been tested in sensory-deprived individuals, with mixed evidence in neurotypical subjects, thereby limiting its support as a general principle of brain organization. Critically, current theories of metamodal processing do not specify requirements for successful metamodal processing at the level of neural representations. Specification at this level may be particularly important in neurotypical individuals, where novel sensory modalities must interface with existing representations for the standard sense. Here we hypothesized that effective metamodal engagement of a cortical area requires congruence between stimulus representations in the standard and novel sensory modalities in that region. To test this, we first used fMRI to identify bilateral auditory speech representations. We then trained 20 human participants (12 female) to recognize vibrotactile versions of auditory words using one of two auditory-to-vibrotactile algorithms. The vocoded algorithm attempted to match the encoding scheme of auditory speech while the token-based algorithm did not. Crucially, using fMRI, we found that only in the vocoded group did trained-vibrotactile stimuli recruit speech representations in the superior temporal gyrus and lead to increased coupling between them and somatosensory areas. Our results advance our understanding of brain organization by providing new insight into unlocking the metamodal potential of the brain, thereby benefitting the design of novel sensory substitution devices that aim to tap into existing processing streams in the brain.SIGNIFICANCE STATEMENT It has been proposed that the brain is organized by "metamodal," sensory-independent modules specialized for performing certain tasks. This idea has inspired therapeutic applications, such as sensory substitution devices, for example, enabling blind individuals "to see" by transforming visual input into soundscapes. Yet, other studies have failed to demonstrate metamodal engagement. Here, we tested the hypothesis that metamodal engagement in neurotypical individuals requires matching the encoding schemes between stimuli from the novel and standard sensory modalities. We trained two groups of subjects to recognize words generated by one of two auditory-to-vibrotactile transformations. Critically, only vibrotactile stimuli that were matched to the neural encoding of auditory speech engaged auditory speech areas after training. This suggests that matching encoding schemes is critical to unlocking the brain's metamodal potential.
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Affiliation(s)
- Srikanth R Damera
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20007
| | - Patrick S Malone
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20007
| | - Benson W Stevens
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20007
| | - Richard Klein
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20007
| | - Silvio P Eberhardt
- Department of Speech Language & Hearing Sciences, George Washington University, Washington, DC 20052
| | - Edward T Auer
- Department of Speech Language & Hearing Sciences, George Washington University, Washington, DC 20052
| | - Lynne E Bernstein
- Department of Speech Language & Hearing Sciences, George Washington University, Washington, DC 20052
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Kral A, Sharma A. Crossmodal plasticity in hearing loss. Trends Neurosci 2023; 46:377-393. [PMID: 36990952 PMCID: PMC10121905 DOI: 10.1016/j.tins.2023.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/27/2023] [Accepted: 02/21/2023] [Indexed: 03/29/2023]
Abstract
Crossmodal plasticity is a textbook example of the ability of the brain to reorganize based on use. We review evidence from the auditory system showing that such reorganization has significant limits, is dependent on pre-existing circuitry and top-down interactions, and that extensive reorganization is often absent. We argue that the evidence does not support the hypothesis that crossmodal reorganization is responsible for closing critical periods in deafness, and crossmodal plasticity instead represents a neuronal process that is dynamically adaptable. We evaluate the evidence for crossmodal changes in both developmental and adult-onset deafness, which start as early as mild-moderate hearing loss and show reversibility when hearing is restored. Finally, crossmodal plasticity does not appear to affect the neuronal preconditions for successful hearing restoration. Given its dynamic and versatile nature, we describe how this plasticity can be exploited for improving clinical outcomes after neurosensory restoration.
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Affiliation(s)
- Andrej Kral
- Institute of AudioNeuroTechnology and Department of Experimental Otology, Otolaryngology Clinics, Hannover Medical School, Hannover, Germany; Australian Hearing Hub, School of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - Anu Sharma
- Department of Speech Language and Hearing Science, Center for Neuroscience, Institute of Cognitive Science, University of Colorado Boulder, Boulder, CO, USA.
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23
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Smyre SA, Bean NL, Stein BE, Rowland BA. Predictability alters multisensory responses by modulating unisensory inputs. Front Neurosci 2023; 17:1150168. [PMID: 37065927 PMCID: PMC10090419 DOI: 10.3389/fnins.2023.1150168] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
The multisensory (deep) layers of the superior colliculus (SC) play an important role in detecting, localizing, and guiding orientation responses to salient events in the environment. Essential to this role is the ability of SC neurons to enhance their responses to events detected by more than one sensory modality and to become desensitized (‘attenuated’ or ‘habituated’) or sensitized (‘potentiated’) to events that are predictable via modulatory dynamics. To identify the nature of these modulatory dynamics, we examined how the repetition of different sensory stimuli affected the unisensory and multisensory responses of neurons in the cat SC. Neurons were presented with 2HZ stimulus trains of three identical visual, auditory, or combined visual–auditory stimuli, followed by a fourth stimulus that was either the same or different (‘switch’). Modulatory dynamics proved to be sensory-specific: they did not transfer when the stimulus switched to another modality. However, they did transfer when switching from the visual–auditory stimulus train to either of its modality-specific component stimuli and vice versa. These observations suggest that predictions, in the form of modulatory dynamics induced by stimulus repetition, are independently sourced from and applied to the modality-specific inputs to the multisensory neuron. This falsifies several plausible mechanisms for these modulatory dynamics: they neither produce general changes in the neuron’s transform, nor are they dependent on the neuron’s output.
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Zhang S, Liu C, Wang Q, Zhou H, Wu H, Zhuang J, Cao Y, Shi H, Zhang J, Wang J. CRYAA and GJA8 promote visual development after whisker tactile deprivation. Heliyon 2023; 9:e13897. [PMID: 36915480 PMCID: PMC10006481 DOI: 10.1016/j.heliyon.2023.e13897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
Deprivation of one sense can be followed by enhanced development of other senses via cross-modal plasticity mechanisms. To study the effect of whisker tactile deprivation on vision during the early stages of development, we clipped the bilateral whiskers of young mice and found that their vision was impaired but later recovered to normal levels. Our results demonstrate that inhibition of the PI3K/AKT/ERK signaling pathway caused short-term visual impairment during early development, while high expression levels of Crystallin Alpha A (CRYAA) and Gap Junction Protein Alpha 8 (GJA8) in the retina led to the recovery of developmental visual acuity. Interestingly, analysis of single-cell sequencing results from human embryonic retinas at 9-19 gestational weeks (GW) revealed that CRYAA and GJA8 display stage-specific peak expression during human embryonic retinal development, suggesting potential functions in visual development. Our data show that high expression levels of CRYAA and GJA8 in the retina after whisker deprivation rescue impaired visual development, which may provide a foundation for further research on the mechanisms of cross-modal plasticity and in particular, offer new insights into the mechanisms underlying tactile-visual cross-modal development.
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Affiliation(s)
- Shibo Zhang
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Cuiping Liu
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Qian Wang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Haicong Zhou
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Hao Wu
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Junyi Zhuang
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Yiyang Cao
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Hongwei Shi
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
| | - Jingfa Zhang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Corresponding author.
| | - Jiao Wang
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, 99 Shang Da Road, Shanghai, China
- Corresponding author.
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Ma HL, Zeng TA, Jiang L, Zhang M, Li H, Su R, Wang ZX, Chen DM, Xu M, Xie WT, Dang P, Bu XO, Zhang T, Wang TZ. Altered resting-state network connectivity patterns for predicting attentional function in deaf individuals: An EEG study. Hear Res 2023; 429:108696. [PMID: 36669260 DOI: 10.1016/j.heares.2023.108696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/22/2022] [Accepted: 01/12/2023] [Indexed: 01/16/2023]
Abstract
Multiple aspects of brain development are influenced by early sensory loss such as deafness. Despite growing evidence of changes in attentional functions for prelingual profoundly deaf, the brain mechanisms underlying these attentional changes remain unclear. This study investigated the relationships between differential attention and the resting-state brain network difference in deaf individuals from the perspective of brain network connectivity. We recruited 36 deaf individuals and 34 healthy controls (HC). We recorded each participant's resting-state electroencephalogram (EEG) and the event-related potential (ERP) data from the Attention Network Test (ANT). The coherence (COH) method and graph theory were used to build brain networks and analyze network connectivity. First, the ERPs of analysis in task states were investigated. Then, we correlated the topological properties of the network functional connectivity with the ERPs. The results revealed a significant correlation between frontal-occipital connection in the resting state and the amplitude of alert N1 amplitude in the alpha band. Specifically, clustering coefficients and global and local efficiency correlate negatively with alert N1 amplitude, whereas the characteristic path length positively correlates with alert N1 amplitude. In addition, deaf individuals exhibited weaker frontal-occipital connections compared to the HC group. In executive control, the deaf group had longer reaction times and larger P3 amplitudes. However, the orienting function did not significantly differ from the HC group. Finally, the alert N1 amplitude in the ANT task for deaf individuals was predicted using a multiple linear regression model based on resting-state EEG network properties. Our results suggest that deafness affects the performance of alerting and executive control while orienting functions develop similarly to hearing individuals. Furthermore, weakened frontal-occipital connections in the deaf brain are a fundamental cause of altered alerting functions in the deaf. These results reveal important effects of brain networks on attentional function from the perspective of brain connections and provide potential physiological biomarkers to predicting attention.
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Affiliation(s)
- Hai-Lin Ma
- Faculty of Education, Shaanxi Normal University, No.199, Chang'an Road, Yanta District, Xi 'an, Shaanxi 710062, China; Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Tong-Ao Zeng
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Lin Jiang
- School of Life Science and Technology, Center for Information in BioMedicine, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Mei Zhang
- College of Special Education, Leshan Normal University, Leshan 614000, China
| | - Hao Li
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Rui Su
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Zhi-Xin Wang
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China; Department of Psychology, Shandong Normal University, No. 88East Wenhua Road, Jinan, Shandong 250014, China
| | - Dong-Mei Chen
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Meng Xu
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Wen-Ting Xie
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Peng Dang
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China
| | - Xiao-Ou Bu
- Plateau Brain Science Research Center, Tibet University /South China Normal University, 850012/Guangzhou, Lhasa 510631, China; Faculty of Education, East China Normal University, Shanghai 200062, China
| | - Tao Zhang
- Mental Health Education Center and School of Science, Xihua University, Chengdu 610039, China,.
| | - Ting-Zhao Wang
- Faculty of Education, Shaanxi Normal University, No.199, Chang'an Road, Yanta District, Xi 'an, Shaanxi 710062, China.
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26
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Aggius-Vella E, Chebat DR, Maidenbaum S, Amedi A. Activation of human visual area V6 during egocentric navigation with and without visual experience. Curr Biol 2023; 33:1211-1219.e5. [PMID: 36863342 DOI: 10.1016/j.cub.2023.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 11/23/2022] [Accepted: 02/07/2023] [Indexed: 03/04/2023]
Abstract
V6 is a retinotopic area located in the dorsal visual stream that integrates eye movements with retinal and visuo-motor signals. Despite the known role of V6 in visual motion, it is unknown whether it is involved in navigation and how sensory experiences shape its functional properties. We explored the involvement of V6 in egocentric navigation in sighted and in congenitally blind (CB) participants navigating via an in-house distance-to-sound sensory substitution device (SSD), the EyeCane. We performed two fMRI experiments on two independent datasets. In the first experiment, CB and sighted participants navigated the same mazes. The sighted performed the mazes via vision, while the CB performed them via audition. The CB performed the mazes before and after a training session, using the EyeCane SSD. In the second experiment, a group of sighted participants performed a motor topography task. Our results show that right V6 (rhV6) is selectively involved in egocentric navigation independently of the sensory modality used. Indeed, after training, rhV6 of CB is selectively recruited for auditory navigation, similarly to rhV6 in the sighted. Moreover, we found activation for body movement in area V6, which can putatively contribute to its involvement in egocentric navigation. Taken together, our findings suggest that area rhV6 is a unique hub that transforms spatially relevant sensory information into an egocentric representation for navigation. While vision is clearly the dominant modality, rhV6 is in fact a supramodal area that can develop its selectivity for navigation in the absence of visual experience.
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Affiliation(s)
- Elena Aggius-Vella
- The Baruch Ivcher Institute for Brain, Cognition & Technology, Reichman University, 4610101 Herzliya, Israel.
| | - Daniel-Robert Chebat
- Department of Psychology, Faculty of Social Sciences and Humanities, Ariel University, 4076414 Ariel, Israel; Navigation and Accessibility Research Center of Ariel University (NARCA), Ariel University, 4076414 Ariel, Israel.
| | - Shachar Maidenbaum
- Department of Biomedical Engineering, Ben-Gurion University of the Negev, 8410501 Beersheba, Israel; Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, 8410501 Beersheba, Israel.
| | - Amir Amedi
- The Baruch Ivcher Institute for Brain, Cognition & Technology, Reichman University, 4610101 Herzliya, Israel.
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27
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Mitzelfelt T, Bao X, Barnes P, Lomber SG. Visually evoked potentials (VEPs) across the visual field in hearing and deaf cats. Front Neurosci 2023; 17:997357. [PMID: 36937669 PMCID: PMC10020186 DOI: 10.3389/fnins.2023.997357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 01/24/2023] [Indexed: 03/06/2023] Open
Abstract
Introduction Congenitally deaf cats perform better on visual localization tasks than hearing cats, and this advantage has been attributed to the posterior auditory field. Successful visual localization requires both visual processing of the target and timely generation of an action to approach the target. Activation of auditory cortex in deaf subjects during visual localization in the peripheral visual field can occur either via bottom-up stimulus-driven and/or top-down goal-directed pathways. Methods In this study, we recorded visually evoked potentials (VEPs) in response to a reversing checkerboard stimulus presented in the hemifield contralateral to the recorded hemisphere in both hearing and deaf cats under light anesthesia. Results Although VEP amplitudes and latencies were systematically modulated by stimulus eccentricity, we found little evidence of changes in VEP in deaf cats that can explain their behavioral advantage. A statistical trend was observed, showing larger peak amplitudes and shorter peak latencies in deaf subjects for stimuli in the near- and mid-peripheral field. Additionally, latency of the P1 wave component had a larger inter-sweep variation in deaf subjects. Discussion Our results suggested that cross-modal plasticity following deafness does not play a major part in cortical processing of the peripheral visual field when the "vision for action" system is not recruited.
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Affiliation(s)
| | - Xiaohan Bao
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada
| | - Paisley Barnes
- Department of Physiology, McGill University, Montreal, QC, Canada
| | - Stephen G. Lomber
- Department of Physiology, McGill University, Montreal, QC, Canada
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada
- *Correspondence: Stephen G. Lomber,
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28
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Gordon SG, Butler BE, Lomber SG. The gradient in gray matter thickness across auditory cortex and differential cortical thickness changes following perinatal deafness. Cereb Cortex 2022; 33:5829-5838. [PMID: 36482814 PMCID: PMC10183739 DOI: 10.1093/cercor/bhac463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 09/06/2022] [Accepted: 10/20/2022] [Indexed: 12/14/2022] Open
Abstract
Abstract
In the absence of hearing during development, the brain adapts and repurposes what was destined to become auditory cortex. As cortical thickness is commonly used as a proxy to identify cortical regions that have undergone plastic changes, the purpose of this investigation was to compare cortical thickness patterns between hearing and deaf cats. In this study, normal hearing (n = 29) and deaf (n = 26) cats were scanned to examine cortical thickness in hearing controls, as well as differential changes in thickness as a consequence of deafness. In hearing cats, a gradient in cortical thickness was identified across auditory cortex in which it is thinner in more dorsal regions and thicker in more ventral regions. Compared with hearing controls, differential thickening and thinning was observed in specific regions of deaf auditory cortex. More dorsal regions were found to be bilaterally thicker in the deaf group, while more ventral regions in the left hemisphere were thinner. The location and nature of these changes creates a gradient along the dorsoventral axis, wherein dorsal auditory cortical fields are thicker, whereas more ventral fields are thinner in deaf animals compared with hearing controls.
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Affiliation(s)
- Stephen G Gordon
- Integrated Program in Neuroscience, McGill University , Montreal, Canada
| | - Blake E Butler
- Department of Psychology, Western University , London, Canada
| | - Stephen G Lomber
- Department of Physiology , Faculty of Medicine and Health Sciences, , Montreal, Canada
- McGill University , Faculty of Medicine and Health Sciences, , Montreal, Canada
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29
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Merrikhi Y, Kok MA, Lomber SG, Meredith MA. A comparison of multisensory features of two auditory cortical areas: primary (A1) and higher-order dorsal zone (DZ). Cereb Cortex Commun 2022; 4:tgac049. [PMID: 36632047 PMCID: PMC9825723 DOI: 10.1093/texcom/tgac049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
From myriads of ongoing stimuli, the brain creates a fused percept of the environment. This process, which culminates in perceptual binding, is presumed to occur through the operations of multisensory neurons that occur throughout the brain. However, because different brain areas receive different inputs and have different cytoarchitechtonics, it would be expected that local multisensory features would also vary across regions. The present study investigated that hypothesis using multiple single-unit recordings from anesthetized cats in response to controlled, electronically-generated separate and combined auditory, visual, and somatosensory stimulation. These results were used to compare the multisensory features of neurons in cat primary auditory cortex (A1) with those identified in the nearby higher-order auditory region, the Dorsal Zone (DZ). Both regions exhibited the same forms of multisensory neurons, albeit in different proportions. Multisensory neurons exhibiting excitatory or inhibitory properties occurred in similar proportions in both areas. Also, multisensory neurons in both areas expressed similar levels of multisensory integration. Because responses to auditory cues alone were so similar to those that included non-auditory stimuli, it is proposed that this effect represents a mechanism by which multisensory neurons subserve the process of perceptual binding.
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Affiliation(s)
- Yaser Merrikhi
- Corresponding authors: Yaser Merrikhi, Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec H3G 1Y6, Canada. and Stephen G Lomber, Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec H3G 1Y6, Canada.
| | - Melanie A Kok
- Graduate Program in Neuroscience, University of Western Ontario, London, Ontario N6A 5K8, Canada
| | - Stephen G Lomber
- Corresponding authors: Yaser Merrikhi, Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec H3G 1Y6, Canada. and Stephen G Lomber, Department of Physiology, Faculty of Medicine, McGill University, Montreal, Quebec H3G 1Y6, Canada.
| | - M Alex Meredith
- Department of Anatomy and Neurobiology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia 23298, USA
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30
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Deaf individuals use compensatory strategies to estimate visual time events. Brain Res 2022; 1798:148148. [DOI: 10.1016/j.brainres.2022.148148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/08/2022]
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31
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Sabourin CJ, Merrikhi Y, Lomber SG. Do blind people hear better? Trends Cogn Sci 2022; 26:999-1012. [PMID: 36207258 DOI: 10.1016/j.tics.2022.08.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 01/12/2023]
Abstract
For centuries, anecdotal evidence such as the perfect pitch of the blind piano tuner or blind musician has supported the notion that individuals who have lost their sight early in life have superior hearing abilities compared with sighted people. Recently, auditory psychophysical and functional imaging studies have identified that specific auditory enhancements in the early blind can be linked to activation in extrastriate visual cortex, suggesting crossmodal plasticity. Furthermore, the nature of the sensory reorganization in occipital cortex supports the concept of a task-based functional cartography for the cerebral cortex rather than a sensory-based organization. In total, studies of early-blind individuals provide valuable insights into mechanisms of cortical plasticity and principles of cerebral organization.
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Affiliation(s)
- Carina J Sabourin
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada; Biological and Biomedical Engineering Graduate Program, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Yaser Merrikhi
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Stephen G Lomber
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada; Biological and Biomedical Engineering Graduate Program, McGill University, Montreal, Quebec H3G 1Y6, Canada; Department of Psychology, McGill University, Montreal, Quebec H3G 1Y6, Canada; Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec H3G 1Y6, Canada.
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32
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Electrophysiological differences and similarities in audiovisual speech processing in CI users with unilateral and bilateral hearing loss. CURRENT RESEARCH IN NEUROBIOLOGY 2022; 3:100059. [DOI: 10.1016/j.crneur.2022.100059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/24/2022] [Accepted: 10/07/2022] [Indexed: 11/11/2022] Open
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Han JJ, Noh TS, Suh MW, Kim SH, Kim DH, Kim SJ, Oh SH. Synaptic Remodeling of the Auditory Cortex Following Bilateral Blindness: Evidence of Cross-modal Plasticity. Exp Neurobiol 2022; 31:299-306. [PMID: 36351840 PMCID: PMC9659489 DOI: 10.5607/en22020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/11/2022] Open
Abstract
We aimed to evaluate structural dynamic changes of neurons in the auditory cortex after visual deprivation. We longitudinally tracked dendritic spines for 3 weeks after visual deprivation in vivo using a two-photon microscope. GFP-labeled dendritic spines in the auditory cortex were serially followed after bilateral enucleation. The turnover rate, density, and size of the spines in the dendrites were evaluated 1, 2, and 3 weeks after visual deprivation. The turnover rate of the dendritic spines in the auditory cortex increased at 1 week (20.1±7.3%) after bilateral enucleation compared to baseline (12.5±7.9%); the increase persisted for up to 3 weeks (20.9±11.0%). The spine loss rate was slightly higher than the spine gain rate. The average spine density (number of spines per 1 μm of dendrite) was significantly lower at 2 weeks (2W; 0.22±0.06 1/μm) and 3 W (0.22±0.08 1/μm) post-nucleation compared to baseline (0.026±0.09 1/μm). We evaluated the change of synaptic strength in the stable spines at each time point. The normalized spine size in the auditory cortex was significantly increased after bilateral blindness at 1 W postoperatively (1.36±0.92), 2 W postoperatively (1.40±1.18), and 3 W postoperatively (1.36±0.88) compared to baseline. Sensory deprivation resulted in remodeling of the neural circuitry in the spared cortex, via cross-modal plasticity in the direction of partial breakdown of synapses, and enhanced strength of the remaining synapses.
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Affiliation(s)
- Jae Joon Han
- Department of Otorhinolaryngology–Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul Hospital, Seoul 04401, Korea
| | - Tae-Soo Noh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Myung-Whan Suh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Seung Ha Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Doo Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Natural Sciences, Seoul 03080, Korea
| | - Seung Ha Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea
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Evidence of visual crossmodal reorganization positively relates to speech outcomes in cochlear implant users. Sci Rep 2022; 12:17749. [PMID: 36273017 PMCID: PMC9587996 DOI: 10.1038/s41598-022-22117-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 10/10/2022] [Indexed: 01/18/2023] Open
Abstract
Deaf individuals who use a cochlear implant (CI) have remarkably different outcomes for auditory speech communication ability. One factor assumed to affect CI outcomes is visual crossmodal plasticity in auditory cortex, where deprived auditory regions begin to support non-auditory functions such as vision. Previous research has viewed crossmodal plasticity as harmful for speech outcomes for CI users if it interferes with sound processing, while others have demonstrated that plasticity related to visual language may be beneficial for speech recovery. To clarify, we used electroencephalography (EEG) to measure brain responses to a partial face speaking a silent single-syllable word (visual language) in 15 CI users and 13 age-matched typical-hearing controls. We used source analysis on EEG activity to measure crossmodal visual responses in auditory cortex and then compared them to CI users' speech-in-noise listening ability. CI users' brain response to the onset of the video stimulus (face) was larger than controls in left auditory cortex, consistent with crossmodal activation after deafness. CI users also produced a mixture of alpha (8-12 Hz) synchronization and desynchronization in auditory cortex while watching lip movement while controls instead showed desynchronization. CI users with higher speech scores had stronger crossmodal responses in auditory cortex to the onset of the video, but those with lower speech scores had increases in alpha power during lip movement in auditory areas. Therefore, evidence of crossmodal reorganization in CI users does not necessarily predict poor speech outcomes, and differences in crossmodal activation during lip reading may instead relate to strategies or differences that CI users use in audiovisual speech communication.
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35
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Villwock A, Grin K. Somatosensory processing in deaf and deafblind individuals: How does the brain adapt as a function of sensory and linguistic experience? A critical review. Front Psychol 2022; 13:938842. [PMID: 36324786 PMCID: PMC9618853 DOI: 10.3389/fpsyg.2022.938842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022] Open
Abstract
How do deaf and deafblind individuals process touch? This question offers a unique model to understand the prospects and constraints of neural plasticity. Our brain constantly receives and processes signals from the environment and combines them into the most reliable information content. The nervous system adapts its functional and structural organization according to the input, and perceptual processing develops as a function of individual experience. However, there are still many unresolved questions regarding the deciding factors for these changes in deaf and deafblind individuals, and so far, findings are not consistent. To date, most studies have not taken the sensory and linguistic experiences of the included participants into account. As a result, the impact of sensory deprivation vs. language experience on somatosensory processing remains inconclusive. Even less is known about the impact of deafblindness on brain development. The resulting neural adaptations could be even more substantial, but no clear patterns have yet been identified. How do deafblind individuals process sensory input? Studies on deafblindness have mostly focused on single cases or groups of late-blind individuals. Importantly, the language backgrounds of deafblind communities are highly variable and include the usage of tactile languages. So far, this kind of linguistic experience and its consequences have not been considered in studies on basic perceptual functions. Here, we will provide a critical review of the literature, aiming at identifying determinants for neuroplasticity and gaps in our current knowledge of somatosensory processing in deaf and deafblind individuals.
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36
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Corina DP, Coffey-Corina S, Pierotti E, Bormann B, LaMarr T, Lawyer L, Backer KC, Miller LM. Electrophysiological Examination of Ambient Speech Processing in Children With Cochlear Implants. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2022; 65:3502-3517. [PMID: 36037517 PMCID: PMC9913291 DOI: 10.1044/2022_jslhr-22-00004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 05/05/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE This research examined the expression of cortical auditory evoked potentials in a cohort of children who received cochlear implants (CIs) for treatment of congenital deafness (n = 28) and typically hearing controls (n = 28). METHOD We make use of a novel electroencephalography paradigm that permits the assessment of auditory responses to ambiently presented speech and evaluates the contributions of concurrent visual stimulation on this activity. RESULTS Our findings show group differences in the expression of auditory sensory and perceptual event-related potential components occurring in 80- to 200-ms and 200- to 300-ms time windows, with reductions in amplitude and a greater latency difference for CI-using children. Relative to typically hearing children, current source density analysis showed muted responses to concurrent visual stimulation in CI-using children, suggesting less cortical specialization and/or reduced responsiveness to auditory information that limits the detection of the interaction between sensory systems. CONCLUSION These findings indicate that even in the face of early interventions, CI-using children may exhibit disruptions in the development of auditory and multisensory processing.
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Affiliation(s)
- David P. Corina
- Department of Linguistics, University of California, Davis
- Department of Psychology, University of California, Davis
- Center for Mind and Brain, University of California, Davis
| | | | - Elizabeth Pierotti
- Department of Psychology, University of California, Davis
- Center for Mind and Brain, University of California, Davis
| | - Brett Bormann
- Center for Mind and Brain, University of California, Davis
- Neurobiology, Physiology and Behavior, University of California, Davis
| | - Todd LaMarr
- Center for Mind and Brain, University of California, Davis
| | - Laurel Lawyer
- Center for Mind and Brain, University of California, Davis
| | | | - Lee M. Miller
- Center for Mind and Brain, University of California, Davis
- Neurobiology, Physiology and Behavior, University of California, Davis
- Department of Otolaryngology/Head and Neck Surgery, University of California, Davis
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Cross-Modal Reorganization From Both Visual and Somatosensory Modalities in Cochlear Implanted Children and Its Relationship to Speech Perception. Otol Neurotol 2022; 43:e872-e879. [PMID: 35970165 DOI: 10.1097/mao.0000000000003619] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
HYPOTHESIS We hypothesized that children with cochlear implants (CIs) who demonstrate cross-modal reorganization by vision also demonstrate cross-modal reorganization by somatosensation and that these processes are interrelated and impact speech perception. BACKGROUND Cross-modal reorganization, which occurs when a deprived sensory modality's cortical resources are recruited by other intact modalities, has been proposed as a source of variability underlying speech perception in deaf children with CIs. Visual and somatosensory cross-modal reorganization of auditory cortex have been documented separately in CI children, but reorganization in these modalities has not been documented within the same subjects. Our goal was to examine the relationship between cross-modal reorganization from both visual and somatosensory modalities within a single group of CI children. METHODS We analyzed high-density electroencephalogram responses to visual and somatosensory stimuli and current density reconstruction of brain activity sources. Speech perception in noise testing was performed. Current density reconstruction patterns were analyzed within the entire subject group and across groups of CI children exhibiting good versus poor speech perception. RESULTS Positive correlations between visual and somatosensory cross-modal reorganization suggested that neuroplasticity in different sensory systems may be interrelated. Furthermore, CI children with good speech perception did not show recruitment of frontal or auditory cortices during visual processing, unlike CI children with poor speech perception. CONCLUSION Our results reflect changes in cortical resource allocation in pediatric CI users. Cross-modal recruitment of auditory and frontal cortices by vision, and cross-modal reorganization of auditory cortex by somatosensation, may underlie variability in speech and language outcomes in CI children.
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Zhou X, Feng M, Hu Y, Zhang C, Zhang Q, Luo X, Yuan W. The Effects of Cortical Reorganization and Applications of Functional Near-Infrared Spectroscopy in Deaf People and Cochlear Implant Users. Brain Sci 2022; 12:brainsci12091150. [PMID: 36138885 PMCID: PMC9496692 DOI: 10.3390/brainsci12091150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/19/2022] [Accepted: 08/24/2022] [Indexed: 11/22/2022] Open
Abstract
A cochlear implant (CI) is currently the only FDA-approved biomedical device that can restore hearing for the majority of patients with severe-to-profound sensorineural hearing loss (SNHL). While prelingually and postlingually deaf individuals benefit substantially from CI, the outcomes after implantation vary greatly. Numerous studies have attempted to study the variables that affect CI outcomes, including the personal characteristics of CI candidates, environmental variables, and device-related variables. Up to 80% of the results remained unexplainable because all these variables could only roughly predict auditory performance with a CI. Brain structure/function differences after hearing deprivation, that is, cortical reorganization, has gradually attracted the attention of neuroscientists. The cross-modal reorganization in the auditory cortex following deafness is thought to be a key factor in the success of CI. In recent years, the adaptive and maladaptive effects of this reorganization on CI rehabilitation have been argued because the neural mechanisms of how this reorganization impacts CI learning and rehabilitation have not been revealed. Due to the lack of brain processes describing how this plasticity affects CI learning and rehabilitation, the adaptive and deleterious consequences of this reorganization on CI outcomes have recently been the subject of debate. This review describes the evidence for different roles of cross-modal reorganization in CI performance and attempts to explore the possible reasons. Additionally, understanding the core influencing mechanism requires taking into account the cortical changes from deafness to hearing restoration. However, methodological issues have restricted longitudinal research on cortical function in CI. Functional near-infrared spectroscopy (fNIRS) has been increasingly used for the study of brain function and language assessment in CI because of its unique advantages, which are considered to have great potential. Here, we review studies on auditory cortex reorganization in deaf patients and CI recipients, and then we try to illustrate the feasibility of fNIRS as a neuroimaging tool in predicting and assessing speech performance in CI recipients. Here, we review research on the cross-modal reorganization of the auditory cortex in deaf patients and CI recipients and seek to demonstrate the viability of using fNIRS as a neuroimaging technique to predict and evaluate speech function in CI recipients.
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Affiliation(s)
- Xiaoqing Zhou
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Menglong Feng
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Yaqin Hu
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Chanyuan Zhang
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Qingling Zhang
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Xiaoqin Luo
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Wei Yuan
- Department of Otolaryngolgy, Chongqing General Hospital, Chongqing 401147, China
- Chongqing Medical University, Chongqing 400042, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Chongqing 400714, China
- Correspondence: ; Tel.: +86-23-63535180
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Fullerton AM, Vickers DA, Luke R, Billing AN, McAlpine D, Hernandez-Perez H, Peelle JE, Monaghan JJM, McMahon CM. Cross-modal functional connectivity supports speech understanding in cochlear implant users. Cereb Cortex 2022; 33:3350-3371. [PMID: 35989307 PMCID: PMC10068270 DOI: 10.1093/cercor/bhac277] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/12/2022] Open
Abstract
Sensory deprivation can lead to cross-modal cortical changes, whereby sensory brain regions deprived of input may be recruited to perform atypical function. Enhanced cross-modal responses to visual stimuli observed in auditory cortex of postlingually deaf cochlear implant (CI) users are hypothesized to reflect increased activation of cortical language regions, but it is unclear if this cross-modal activity is "adaptive" or "mal-adaptive" for speech understanding. To determine if increased activation of language regions is correlated with better speech understanding in CI users, we assessed task-related activation and functional connectivity of auditory and visual cortices to auditory and visual speech and non-speech stimuli in CI users (n = 14) and normal-hearing listeners (n = 17) and used functional near-infrared spectroscopy to measure hemodynamic responses. We used visually presented speech and non-speech to investigate neural processes related to linguistic content and observed that CI users show beneficial cross-modal effects. Specifically, an increase in connectivity between the left auditory and visual cortices-presumed primary sites of cortical language processing-was positively correlated with CI users' abilities to understand speech in background noise. Cross-modal activity in auditory cortex of postlingually deaf CI users may reflect adaptive activity of a distributed, multimodal speech network, recruited to enhance speech understanding.
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Affiliation(s)
- Amanda M Fullerton
- Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia
| | - Deborah A Vickers
- Cambridge Hearing Group, Sound Lab, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 OSZ, United Kingdom.,Speech, Hearing and Phonetic Sciences, University College London, London WC1N 1PF, United Kingdom
| | - Robert Luke
- Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia
| | - Addison N Billing
- Institute of Cognitive Neuroscience, University College London, London WCIN 3AZ, United Kingdom.,DOT-HUB, Department of Medical Physics and Biomedical Engineering, University College London, London WC1E 6BT, United Kingdom
| | - David McAlpine
- Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia
| | - Heivet Hernandez-Perez
- Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia
| | - Jonathan E Peelle
- Department of Otolaryngology, Washington University in St. Louis, St. Louis, MO 63110, United States
| | - Jessica J M Monaghan
- National Acoustic Laboratories, Australian Hearing Hub, Sydney 2109, Australia.,Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia
| | - Catherine M McMahon
- Department of Linguistics and Macquarie University Hearing, Australian Hearing Hub, Macquarie University, Sydney 2109, Australia.,HEAR Centre, Macquarie University, Sydney 2109, Australia
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40
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Wang X, Zhang Y, Zhu L, Bai S, Li R, Sun H, Qi R, Cai R, Li M, Jia G, Cao X, Schriver KE, Li X, Gao L. Selective corticofugal modulation on sound processing in auditory thalamus of awake marmosets. Cereb Cortex 2022; 33:3372-3386. [PMID: 35851798 PMCID: PMC10068278 DOI: 10.1093/cercor/bhac278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/25/2022] [Accepted: 06/25/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Cortical feedback has long been considered crucial for the modulation of sensory perception and recognition. However, previous studies have shown varying modulatory effects of the primary auditory cortex (A1) on the auditory response of subcortical neurons, which complicate interpretations regarding the function of A1 in sound perception and recognition. This has been further complicated by studies conducted under different brain states. In the current study, we used cryo-inactivation in A1 to examine the role of corticothalamic feedback on medial geniculate body (MGB) neurons in awake marmosets. The primary effects of A1 inactivation were a frequency-specific decrease in the auditory response of most MGB neurons coupled with an increased spontaneous firing rate, which together resulted in a decrease in the signal-to-noise ratio. In addition, we report for the first time that A1 robustly modulated the long-lasting sustained response of MGB neurons, which changed the frequency tuning after A1 inactivation, e.g. some neurons are sharper with corticofugal feedback and some get broader. Taken together, our results demonstrate that corticothalamic modulation in awake marmosets serves to enhance sensory processing in a manner similar to center-surround models proposed in visual and somatosensory systems, a finding which supports common principles of corticothalamic processing across sensory systems.
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Affiliation(s)
- Xiaohui Wang
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Yuanqing Zhang
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Lin Zhu
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Siyi Bai
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Rui Li
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Hao Sun
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Runze Qi
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Ruolan Cai
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Min Li
- Division of Psychology , State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, No.19, Xinjiekouwai St, Haidian District, Beijing 100875 , China
| | - Guoqiang Jia
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Xinyuan Cao
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
| | - Kenneth E Schriver
- School of Brain Science and Brain Medicine , Zhejiang University School of Medicine, Hangzhou 310020 , China
| | - Xinjian Li
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
- Department of Neurobiology , NHC and CAMS Key Laboratory of Medical Neurobiology, School of Brain Science and Brain Medicine, and MOE Frontier Science Center for Brain Science and Brain-machine Integration, Zhejiang University School of Medicine, Hangzhou 310020 , China
| | - Lixia Gao
- Department of Neurology of the Second Affiliated Hospital , College of Biomedical Engineering and Instrument Science, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, School of Medicine, Zhejiang University, 268 Kaixuan Road, Science Building, Room 206, Hangzhou, Zhejiang 310020 , China
- Department of Neurobiology , NHC and CAMS Key Laboratory of Medical Neurobiology, School of Brain Science and Brain Medicine, and MOE Frontier Science Center for Brain Science and Brain-machine Integration, Zhejiang University School of Medicine, Hangzhou 310020 , China
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41
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Palaniswami H, Abraham A, Yerraguntla K. Auditory cortical stimulability in non habilitated individuals – An evidence from CAEPs. J Otol 2022; 17:146-155. [PMID: 35847577 PMCID: PMC9270565 DOI: 10.1016/j.joto.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 11/24/2022] Open
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42
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Yao R, Guan CQ, Smolen ER, MacWhinney B, Meng W, Morett LM. Gesture-Speech Integration in Typical and Atypical Adolescent Readers. Front Psychol 2022; 13:890962. [PMID: 35719574 PMCID: PMC9204151 DOI: 10.3389/fpsyg.2022.890962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/09/2022] [Indexed: 11/24/2022] Open
Abstract
This study investigated gesture-speech integration (GSI) among adolescents who are deaf or hard of hearing (DHH) and those with typical hearing. Thirty-eight adolescents (19 with hearing loss) performed a Stroop-like task in which they watched 120 short video clips of gestures and actions twice at random. Participants were asked to press one button if the visual content of the speaker's movements was related to a written word and to press another button if it was unrelated to a written word while accuracy rates and response times were recorded. We found stronger GSI effects among DHH participants than hearing participants. The semantic congruency effect was significantly larger in DHH participants than in hearing participants, and results of our experiments indicated a significantly larger gender congruency effect in DHH participants as compared to hearing participants. Results of this study shed light on GSI among DHH individuals and suggest future avenues for research examining the impact of gesture on language processing and communication in this population.
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Affiliation(s)
- Ru Yao
- China National Institute of Education Sciences, Beijing, China
| | - Connie Qun Guan
- School of Foreign Studies, Beijing Language and Culture University, Beijing, China
| | - Elaine R. Smolen
- Teachers College, Columbia University, New York, NY, United States
| | - Brian MacWhinney
- Department of Psychology, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Wanjin Meng
- Department of Moral, Psychological and Special Education, China National Institute of Education Sciences, Beijing, China
| | - Laura M. Morett
- Department of Educational Studies in Psychology, Research Methodology, and Counseling, University of Alabama, Tuscaloosa, AL, United States
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43
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Manini B, Vinogradova V, Woll B, Cameron D, Eimer M, Cardin V. Sensory experience modulates the reorganization of auditory regions for executive processing. Brain 2022; 145:3698-3710. [PMID: 35653493 PMCID: PMC9586534 DOI: 10.1093/brain/awac205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/20/2022] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
Crossmodal plasticity refers to the reorganisation of sensory cortices in the absence of their typical main sensory input. Understanding this phenomenon provides insights into brain function and its potential for change and enhancement. Using fMRI, we investigated how early deafness influences crossmodal plasticity and the organisation of executive functions in the adult human brain. Deaf (N = 25; age: mean = 41.68, range = 19-66, SD = 14.38; 16 female, 9 male) and hearing (N = 20; age: mean= 37.50, range= 18-66, SD= 16.85; 15 female, 5 male) participants performed four visual tasks tapping into different components of executive processing: task switching, working memory, planning and inhibition. Our results show that deaf individuals specifically recruit "auditory" regions during task switching. Neural activity in superior temporal regions, most significantly in the right hemisphere, are good predictors of behavioural performance during task switching in the group of deaf individuals, highlighting the functional relevance of the observed cortical reorganisation. Our results show executive processing in typically sensory regions, suggesting that the development and ultimate role of brain regions are influenced by perceptual environmental experience.
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Affiliation(s)
- Barbara Manini
- Deafness, Cognition and Language Research Centre and Department of Experimental Psychology, UCL, London, UK, WC1H 0PD
| | | | - Bencie Woll
- Deafness, Cognition and Language Research Centre and Department of Experimental Psychology, UCL, London, UK, WC1H 0PD
| | - Donnie Cameron
- Norwich Medical School, University of East Anglia, Norwich, UK, NR4 7TJ
| | - Martin Eimer
- Department of Psychological Sciences, Birkbeck, University of London, London, UK, WC1E 7HX
| | - Velia Cardin
- Deafness, Cognition and Language Research Centre and Department of Experimental Psychology, UCL, London, UK, WC1H 0PD
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44
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Anderson CA, Cushing SL, Papsin BC, Gordon KA. Cortical imbalance following delayed restoration of bilateral hearing in deaf adolescents. Hum Brain Mapp 2022; 43:3662-3679. [PMID: 35429083 PMCID: PMC9294307 DOI: 10.1002/hbm.25875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 03/24/2022] [Accepted: 04/03/2022] [Indexed: 11/10/2022] Open
Abstract
Unilateral auditory deprivation in early childhood can lead to cortical strengthening of inputs from the stimulated side, yet the impact of this on bilateral processing when inputs are later restored beyond an early sensitive period is unknown. To address this, we conducted a longitudinal study with 13 bilaterally profoundly deaf adolescents who received unilateral access to sound via a cochlear implant (CI) in their right ear in early childhood before receiving bilateral access to sound a decade later via a second CI in their left ear. Auditory‐evoked cortical responses to unilateral and bilateral stimulation were measured repeatedly using electroencephalogram from 1 week to 14 months after activation of their second CI. Early cortical responses from the newly implanted ear and bilateral stimulation were atypically lateralized to the left ipsilateral auditory cortex. Duration of unilateral deafness predicted an unexpectedly stronger representation of inputs from the newly implanted, compared to the first implanted ear, in left auditory cortex. Significant initial reductions in responses were observed, yet a left‐hemisphere bias and unequal weighting of inputs favoring the long‐term deaf ear did not converge to a balanced state observed in the binaurally developed system. Bilateral response enhancement was significantly reduced in left auditory cortex suggesting deficits in ipsilateral response inhibition of new, dominant, inputs during bilateral processing. These findings paradoxically demonstrate the adaptive capacity of the adolescent auditory system beyond an early sensitive period for bilateral input, as well as restrictions on its potential to fully reverse cortical imbalances driven by long‐term unilateral deafness.
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Affiliation(s)
- Carly A. Anderson
- Archie's Cochlear Implant Laboratory The Hospital for Sick Children Toronto Ontario Canada
- Neurosciences and Mental Health, SickKids Research Institute Toronto Ontario Canada
| | - Sharon L. Cushing
- Department of Otolaryngology—Head and Neck Surgery The Hospital for Sick Children Toronto Ontario Canada
- Department of Otolaryngology—Head and Neck Surgery University of Toronto Toronto Ontario Canada
| | - Blake C. Papsin
- Department of Otolaryngology—Head and Neck Surgery The Hospital for Sick Children Toronto Ontario Canada
- Department of Otolaryngology—Head and Neck Surgery University of Toronto Toronto Ontario Canada
| | - Karen A. Gordon
- Archie's Cochlear Implant Laboratory The Hospital for Sick Children Toronto Ontario Canada
- Neurosciences and Mental Health, SickKids Research Institute Toronto Ontario Canada
- Department of Otolaryngology—Head and Neck Surgery The Hospital for Sick Children Toronto Ontario Canada
- Department of Otolaryngology—Head and Neck Surgery University of Toronto Toronto Ontario Canada
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45
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Song Q, Qi S, Jin C, Yang L, Qian W, Yin Y, Zhao H, Yu H. Functional Brain Connections Identify Sensorineural Hearing Loss and Predict the Outcome of Cochlear Implantation. Front Comput Neurosci 2022; 16:825160. [PMID: 35431849 PMCID: PMC9005839 DOI: 10.3389/fncom.2022.825160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/08/2022] [Indexed: 11/13/2022] Open
Abstract
Identification of congenital sensorineural hearing loss (SNHL) and early intervention, especially by cochlear implantation (CI), are crucial for restoring hearing in patients. However, high accuracy diagnostics of SNHL and prognostic prediction of CI are lacking to date. To diagnose SNHL and predict the outcome of CI, we propose a method combining functional connections (FCs) measured by functional magnetic resonance imaging (fMRI) and machine learning. A total of 68 children with SNHL and 34 healthy controls (HC) of matched age and gender were recruited to construct classification models for SNHL and HC. A total of 52 children with SNHL that underwent CI were selected to establish a predictive model of the outcome measured by the category of auditory performance (CAP), and their resting-state fMRI images were acquired. After the dimensional reduction of FCs by kernel principal component analysis, three machine learning methods including the support vector machine, logistic regression, and k-nearest neighbor and their voting were used as the classifiers. A multiple logistic regression method was performed to predict the CAP of CI. The classification model of voting achieves an area under the curve of 0.84, which is higher than that of three single classifiers. The multiple logistic regression model predicts CAP after CI in SNHL with an average accuracy of 82.7%. These models may improve the identification of SNHL through fMRI images and prognosis prediction of CI in SNHL.
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Affiliation(s)
- Qiyuan Song
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Shouliang Qi
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
- Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Northeastern University, Shenyang, China
- *Correspondence: Shouliang Qi,
| | - Chaoyang Jin
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Lei Yang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Wei Qian
- Department of Electrical and Computer Engineering, University of Texas at El Paso, El Paso, TX, United States
| | - Yi Yin
- Department of Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Houyu Zhao
- Department of Otolaryngology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Houyu Zhao,
| | - Hui Yu
- Department of Radiology, The Seventh Affiliated Hospital, Southern Medical University, Foshan, China
- Hui Yu,
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Grégoire A, Deggouj N, Dricot L, Decat M, Kupers R. Brain Morphological Modifications in Congenital and Acquired Auditory Deprivation: A Systematic Review and Coordinate-Based Meta-Analysis. Front Neurosci 2022; 16:850245. [PMID: 35418829 PMCID: PMC8995770 DOI: 10.3389/fnins.2022.850245] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/01/2022] [Indexed: 12/02/2022] Open
Abstract
Neuroplasticity following deafness has been widely demonstrated in both humans and animals, but the anatomical substrate of these changes is not yet clear in human brain. However, it is of high importance since hearing loss is a growing problem due to aging population. Moreover, knowing these brain changes could help to understand some disappointing results with cochlear implant, and therefore could improve hearing rehabilitation. A systematic review and a coordinate-based meta-analysis were realized about the morphological brain changes highlighted by MRI in severe to profound hearing loss, congenital and acquired before or after language onset. 25 papers were included in our review, concerning more than 400 deaf subjects, most of them presenting prelingual deafness. The most consistent finding is a volumetric decrease in gray matter around bilateral auditory cortex. This change was confirmed by the coordinate-based meta-analysis which shows three converging clusters in this region. The visual areas of deaf children is also significantly impacted, with a decrease of the volume of both gray and white matters. Finally, deafness is responsible of a gray matter increase within the cerebellum, especially at the right side. These results are largely discussed and compared with those from deaf animal models and blind humans, which demonstrate for example a much more consistent gray matter decrease along their respective primary sensory pathway. In human deafness, a lot of other factors than deafness could interact on the brain plasticity. One of the most important is the use of sign language and its age of acquisition, which induce among others changes within the hand motor region and the visual cortex. But other confounding factors exist which have been too little considered in the current literature, such as the etiology of the hearing impairment, the speech-reading ability, the hearing aid use, the frequent associated vestibular dysfunction or neurocognitive impairment. Another important weakness highlighted by this review concern the lack of papers about postlingual deafness, whereas it represents most of the deaf population. Further studies are needed to better understand these issues, and finally try to improve deafness rehabilitation.
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Affiliation(s)
- Anaïs Grégoire
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Naïma Deggouj
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Laurence Dricot
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Monique Decat
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Ron Kupers
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
- Department of Neuroscience, Panum Institute, University of Copenhagen, Copenhagen, Denmark
- Ecole d’Optométrie, Université de Montréal, Montréal, QC, Canada
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Chen Y, Li H, Liu B, Gao W, Yang A, Lv K, Xia H, Zhang W, Yu H, Liu J, Liu X, Wang Y, Han H, Ma G. Cerebral Blood Flow Pattern Changes in Unilateral Sudden Sensorineural Hearing Loss. Front Neurosci 2022; 16:856710. [PMID: 35356053 PMCID: PMC8959761 DOI: 10.3389/fnins.2022.856710] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/15/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveThis study analyzed the differences in the cerebral blood flow (CBF) between unilateral Sudden Sensorineural Hearing Loss (SSNHL) patients and healthy controls (HCs). We also investigated CBF differences in auditory-related areas in patients with left- and right-sided SSNHL (lSSNHL and rSSNHL) and HCs. We further explore the correlation between unilateral SSNHL characteristics and changes in the CBF.Methods36 patients with unilateral SSNHL (15 males and 21 females, 40.39 ± 13.42 years) and 36 HCs (15 males and 21 females, 40.39 ± 14.11 years) were recruited. CBF images were collected and analyzed using arterial spin labeling (ASL). CereFlow software was used for the post-processing of the ASL data to obtain the CBF value of 246 subregions within brainnetome atlas (BNA). The Two-sample t-test was used to compare CBF differences between SSNHL patients and HCs. One-way ANOVA or Kruskal-Wallis test was used to compare the CBF difference of auditory-related areas among the three groups (lSSNHL, rSSNHL, and HCs). Then, the correlation between CBF changes and specific clinical characteristics were calculated.ResultsThe SSNHL patients exhibited decreased CBF in the bilateral middle frontal gyrus (MFG, MFG_7_1 and MFG_7_3), the contralateral precentral gyrus (PrG, PrG_6_3) and the bilateral superior parietal lobule (SPL, bilateral SPL_5_1, SPL_5_2, and ipsilateral SPL_5_4), p < 0.0002. Compared with HCs, unilateral SSNHL patients exhibited increased rCBF in the bilateral orbital gyrus (OrG, OrG_6_5), the bilateral inferior temporal gyrus (ITG, contralateral ITG_7_1 and bilateral ITG_7_7), p < 0.0002. lSSNHL showed abnormal CBF in left BA21 caudal (p = 0.02) and left BA37 dorsolateral (p = 0.047). We found that the CBF in ipsilateral MFG_7_1 of SSNHL patients was positively correlated with tinnitus Visual Analog Scale (VAS) score (r = 0.485, p = 0.008).ConclusionOur preliminary study explored CBF pattern changes in unilateral SSNHL patients in auditory-related areas and non-auditory areas, suggesting that there may exist reduced attention and some sensory compensation in patients with SSNHL. These findings could advance our understanding of the potential pathophysiology of unilateral SSNHL.
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Affiliation(s)
- Yue Chen
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Haimei Li
- Department of Radiology, Fuxing Hospital, Capital Medical University, Beijing, China
| | - Bing Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Wenwen Gao
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Aocai Yang
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Kuan Lv
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Hui Xia
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
| | - Wenwei Zhang
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
| | - Hongwei Yu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Jian Liu
- Department of Ultrasound Diagnosis, China-Japan Friendship Hospital, Beijing, China
| | - Xiuxiu Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Yige Wang
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Honglei Han
- Department of Otolaryngology, China-Japan Friendship Hospital, Beijing, China
- Honglei Han,
| | - Guolin Ma
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
- *Correspondence: Guolin Ma,
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48
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Radecke JO, Schierholz I, Kral A, Lenarz T, Murray MM, Sandmann P. Distinct multisensory perceptual processes guide enhanced auditory recognition memory in older cochlear implant users. Neuroimage Clin 2022; 33:102942. [PMID: 35033811 PMCID: PMC8762088 DOI: 10.1016/j.nicl.2022.102942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/23/2021] [Accepted: 01/10/2022] [Indexed: 11/15/2022]
Abstract
Congruent audio-visual encoding enhances later auditory processing in the elderly. CI users benefit from additional congruent visual information, similar to controls. CI users show distinct neurophysiological processes, compared to controls. CI users show an earlier modulation of event-related topographies, compared to controls.
In naturalistic situations, sounds are often perceived in conjunction with matching visual impressions. For example, we see and hear the neighbor’s dog barking in the garden. Still, there is a good chance that we recognize the neighbor’s dog even when we only hear it barking, but do not see it behind the fence. Previous studies with normal-hearing (NH) listeners have shown that the audio-visual presentation of a perceptual object (like an animal) increases the probability to recognize this object later on, even if the repeated presentation of this object occurs in a purely auditory condition. In patients with a cochlear implant (CI), however, the electrical hearing of sounds is impoverished, and the ability to recognize perceptual objects in auditory conditions is significantly limited. It is currently not well understood whether CI users – as NH listeners – show a multisensory facilitation for auditory recognition. The present study used event-related potentials (ERPs) and a continuous recognition paradigm with auditory and audio-visual stimuli to test the prediction that CI users show a benefit from audio-visual perception. Indeed, the congruent audio-visual context resulted in an improved recognition ability of objects in an auditory-only condition, both in the NH listeners and the CI users. The ERPs revealed a group-specific pattern of voltage topographies and correlations between these ERP maps and the auditory recognition ability, indicating a different processing of congruent audio-visual stimuli in CI users when compared to NH listeners. Taken together, our results point to distinct cortical processing of naturalistic audio-visual objects in CI users and NH listeners, which however allows both groups to improve the recognition ability of these objects in a purely auditory context. Our findings are of relevance for future clinical research since audio-visual perception might also improve the auditory rehabilitation after cochlear implantation.
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Affiliation(s)
- Jan-Ole Radecke
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Germany; Institute of Audioneurotechnology, Hannover Medical School, Hannover, Germany; Department of Experimental Otology, ENT Clinics, Hannover Medical School, Hannover, Germany.
| | - Irina Schierholz
- Department of Otolaryngology, Hannover Medical School, Hannover, Germany; Department of Otorhinolaryngology, University of Cologne, Cologne, Germany
| | - Andrej Kral
- Institute of Audioneurotechnology, Hannover Medical School, Hannover, Germany; Department of Experimental Otology, ENT Clinics, Hannover Medical School, Hannover, Germany
| | - Thomas Lenarz
- Institute of Audioneurotechnology, Hannover Medical School, Hannover, Germany; Department of Otolaryngology, Hannover Medical School, Hannover, Germany
| | - Micah M Murray
- The LINE (The Laboratory for Investigative Neurophysiology), Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; CIBM Center for Biomedical Imaging of Lausanne and Geneva, Lausanne, Switzerland; Department of Ophthalmology, Fondation Asile des aveugles, Lausanne, Switzerland; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, USA
| | - Pascale Sandmann
- Department of Otorhinolaryngology, University of Cologne, Cologne, Germany
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49
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Event-related potential correlates of visuo-tactile motion processing in congenitally deaf humans. Neuropsychologia 2022; 170:108209. [DOI: 10.1016/j.neuropsychologia.2022.108209] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 02/23/2022] [Accepted: 03/08/2022] [Indexed: 01/08/2023]
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50
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Stroh AL, Grin K, Rösler F, Bottari D, Ossandón J, Rossion B, Röder B. Developmental experiences alter the temporal processing characteristics of the visual cortex: Evidence from deaf and hearing native signers. Eur J Neurosci 2022; 55:1629-1644. [PMID: 35193156 DOI: 10.1111/ejn.15629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 01/26/2022] [Accepted: 02/18/2022] [Indexed: 12/01/2022]
Abstract
To date, the extent to which early experience shapes the functional characteristics of neural circuits is still a matter of debate. In the present study, we tested whether congenital deafness and/or the acquisition of a sign language alter the temporal processing characteristics of the visual system. Moreover, we investigated whether, assuming cross-modal plasticity in deaf individuals, the temporal processing characteristics of possibly reorganised auditory areas resemble those of the visual cortex. Steady-state visual evoked potentials (SSVEPs) were recorded in congenitally deaf native signers, hearing native signers, and hearing nonsigners. The luminance of the visual stimuli was periodically modulated at 12, 21, and 40 Hz. For hearing nonsigners, the optimal driving rate was 12 Hz. By contrast, for the group of hearing signers the optimal driving rate was 12 and 21 Hz, whereas for the group of deaf signers the optimal driving rate was 21 Hz. We did not observe evidence for cross-modal recruitment of auditory cortex in the group of deaf signers. These results suggest a higher preferred neural processing rate as a consequence of the acquisition of a sign language.
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Affiliation(s)
- Anna-Lena Stroh
- Biological Psychology and Neuropsychology, University of Hamburg, Germany.,Institute of Psychology, Jagiellonian University, Kraków, Poland
| | - Konstantin Grin
- Biological Psychology and Neuropsychology, University of Hamburg, Germany
| | - Frank Rösler
- Biological Psychology and Neuropsychology, University of Hamburg, Germany
| | - Davide Bottari
- Biological Psychology and Neuropsychology, University of Hamburg, Germany.,IMT School for Advanced Studies Lucca, Italy
| | - José Ossandón
- Biological Psychology and Neuropsychology, University of Hamburg, Germany
| | - Bruno Rossion
- Université de Lorraine, CNRS, CRAN, Nancy, France.,Université de Lorraine, CHRU-Nancy, Service de Neurochirurgie, Nancy, France
| | - Brigitte Röder
- Biological Psychology and Neuropsychology, University of Hamburg, Germany
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