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McNair SW, Kayser SJ, Kayser C. Consistent pre-stimulus influences on auditory perception across the lifespan. Neuroimage 2019; 186:22-32. [PMID: 30391564 PMCID: PMC6347568 DOI: 10.1016/j.neuroimage.2018.10.085] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 01/29/2023] Open
Abstract
As we get older, perception in cluttered environments becomes increasingly difficult as a result of changes in peripheral and central neural processes. Given the aging society, it is important to understand the neural mechanisms constraining perception in the elderly. In young participants, the state of rhythmic brain activity prior to a stimulus has been shown to modulate the neural encoding and perceptual impact of this stimulus - yet it remains unclear whether, and if so, how, the perceptual relevance of pre-stimulus activity changes with age. Using the auditory system as a model, we recorded EEG activity during a frequency discrimination task from younger and older human listeners. By combining single-trial EEG decoding with linear modelling we demonstrate consistent statistical relations between pre-stimulus power and the encoding of sensory evidence in short-latency EEG components, and more variable relations between pre-stimulus phase and subjects' decisions in longer-latency components. At the same time, we observed a significant slowing of auditory evoked responses and a flattening of the overall EEG frequency spectrum in the older listeners. Our results point to mechanistically consistent relations between rhythmic brain activity and sensory encoding that emerge despite changes in neural response latencies and the relative amplitude of rhythmic brain activity with age.
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Affiliation(s)
- Steven W McNair
- Institute of Neuroscience and Psychology, University of Glasgow, 62 Hillhead Street, G12 8QB, United Kingdom
| | - Stephanie J Kayser
- Department for Cognitive Neuroscience, Faculty of Biology, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany; Cognitive Interaction Technology - Center of Excellence, Bielefeld University, Inspiration 1, 33615, Bielefeld, Germany
| | - Christoph Kayser
- Department for Cognitive Neuroscience, Faculty of Biology, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany; Cognitive Interaction Technology - Center of Excellence, Bielefeld University, Inspiration 1, 33615, Bielefeld, Germany.
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52
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Seitz J, Kubicki M, Jacobs EG, Cherkerzian S, Weiss BK, Papadimitriou G, Mouradian P, Buka S, Goldstein JM, Makris N. Impact of sex and reproductive status on memory circuitry structure and function in early midlife using structural covariance analysis. Hum Brain Mapp 2018; 40:1221-1233. [PMID: 30548738 DOI: 10.1002/hbm.24441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 10/11/2018] [Accepted: 10/13/2018] [Indexed: 01/13/2023] Open
Abstract
Research on age-related memory alterations traditionally targets individuals aged ≥65 years. However, recent studies emphasize the importance of early aging processes. We therefore aimed to characterize variation in brain gray matter structure in early midlife as a function of sex and menopausal status. Subjects included 94 women (33 premenopausal, 29 perimenopausal, and 32 postmenopausal) and 99 demographically comparable men from the New England Family Study. Subjects were scanned with a high-resolution T1 sequence on a 3 T whole body scanner. Sex and reproductive-dependent structural differences were evaluated using Box's M test and analysis of covariances (ANCOVAs) for gray matter volumes. Brain regions of interest included dorsolateral prefrontal cortex (DLPFC), inferior parietal lobule (iPAR), anterior cingulate cortex (ACC), hippocampus (HIPP), and parahippocampus. While we observed expected significant sex differences in volume of hippocampus with women of all groups having higher volumes than men relative to cerebrum size, we also found significant differences in the covariance matrices of perimenopausal women compared with postmenopausal women. Associations between ACC and HIPP/iPAR/DLPFC were higher in postmenopausal women and correlated with better memory performance. Findings in this study underscore the importance of sex and reproductive status in early midlife for understanding memory function with aging.
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Affiliation(s)
- Johanna Seitz
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Marek Kubicki
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Emily G Jacobs
- Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Sara Cherkerzian
- Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Blair K Weiss
- Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - George Papadimitriou
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Palig Mouradian
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Stephen Buka
- Department of Community Health, Brown University, Providence, Rhode Island
| | - Jill M Goldstein
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Nikos Makris
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
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53
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Billings CJ, McMillan GP, Dille MF, Konrad-Martin D. Compensatory and Serial Processing Models for Relating Electrophysiology, Speech Understanding, and Cognition. Ear Hear 2018; 40:1035-1038. [PMID: 30407937 DOI: 10.1097/aud.0000000000000674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The objective of this study was to develop a framework for investigating the roles of neural coding and cognition in speech perception. DESIGN N1 and P3 auditory evoked potentials, QuickSIN speech understanding scores, and the Digit Symbol Coding cognitive test results were used to test the accuracy of either a compensatory processing model or serial processing model. RESULTS The current dataset demonstrated that neither the compensatory nor the serial processing model were well supported. An additive processing model may best represent the relationships in these data. CONCLUSIONS With the outcome measures used in this study, it is apparent that an additive processing model, where exogenous neural coding and higher order cognition contribute independently, best describes the effects of neural coding and cognition on speech perception. Further testing with additional outcome measures and a larger number of subjects is needed to confirm and further clarify the relationships between these processing domains.
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Affiliation(s)
- Curtis J Billings
- National Center for Rehabilitative Auditory Research, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.,Department of Otolaryngology-Head & Neck Surgery, Oregon Health & Science University, Portland, Oregon, USA
| | - Garnett P McMillan
- National Center for Rehabilitative Auditory Research, Veterans Affairs Portland Health Care System, Portland, Oregon, USA
| | - Marilyn F Dille
- National Center for Rehabilitative Auditory Research, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.,Department of Otolaryngology-Head & Neck Surgery, Oregon Health & Science University, Portland, Oregon, USA
| | - Dawn Konrad-Martin
- National Center for Rehabilitative Auditory Research, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.,Department of Otolaryngology-Head & Neck Surgery, Oregon Health & Science University, Portland, Oregon, USA
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54
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Gennari SP, Millman RE, Hymers M, Mattys SL. Anterior paracingulate and cingulate cortex mediates the effects of cognitive load on speech sound discrimination. Neuroimage 2018; 178:735-743. [DOI: 10.1016/j.neuroimage.2018.06.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 06/07/2018] [Accepted: 06/10/2018] [Indexed: 11/28/2022] Open
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Panouillères MTN, Möttönen R. Decline of auditory-motor speech processing in older adults with hearing loss. Neurobiol Aging 2018; 72:89-97. [PMID: 30240945 DOI: 10.1016/j.neurobiolaging.2018.07.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 07/20/2018] [Accepted: 07/20/2018] [Indexed: 10/28/2022]
Abstract
Older adults often experience difficulties in understanding speech, partly because of age-related hearing loss (HL). In young adults, activity of the left articulatory motor cortex is enhanced and it interacts with the auditory cortex via the left-hemispheric dorsal stream during speech processing. Little is known about the effect of aging and age-related HL on this auditory-motor interaction and speech processing in the articulatory motor cortex. It has been proposed that upregulation of the motor system during speech processing could compensate for HL and auditory processing deficits in older adults. Alternatively, age-related auditory deficits could reduce and distort the input from the auditory cortex to the articulatory motor cortex, suppressing recruitment of the motor system during listening to speech. The aim of the present study was to investigate the effects of aging and age-related HL on the excitability of the tongue motor cortex during listening to spoken sentences using transcranial magnetic stimulation and electromyography. Our results show that the excitability of the tongue motor cortex was facilitated during listening to speech in young and older adults with normal hearing. This facilitation was significantly reduced in older adults with HL. These findings suggest a decline of auditory-motor processing of speech in adults with age-related HL.
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Affiliation(s)
- Muriel T N Panouillères
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom; School of Sports Sciences and Human Movement, CIAMS, Université Paris-Sud, Université Paris-Saclay, Orsay, France; UFR Collegium Sciences et Techniques, CIAMS, Université d'Orléans, Orléans, France.
| | - Riikka Möttönen
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom; School of Psychology, University of Nottingham, Nottingham, UK
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56
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Leon M, Woo C. Environmental Enrichment and Successful Aging. Front Behav Neurosci 2018; 12:155. [PMID: 30083097 PMCID: PMC6065351 DOI: 10.3389/fnbeh.2018.00155] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/04/2018] [Indexed: 12/18/2022] Open
Abstract
The human brain sustains a slow but progressive decline in function as it ages and these changes are particularly profound in cognitive processing. A potential contributor to this deterioration is the gradual decline in the functioning of multiple sensory systems and the effects they have on areas of the brain that mediate cognitive function. In older adults, diminished capacity is typically observed in the visual, auditory, masticatory, olfactory, and motor systems, and these age-related declines are associated with both a decline in cognitive proficiency, and a loss of neurons in regions of the brain. We will review how the loss of hearing, vision, mastication skills, olfactory impairment, and motoric decline accompany cognitive loss, and how improved functioning of these systems may aid in the restoration of the cognitive abilities in older adults. The human brain appears to require a great deal of stimulation to maintain its cognitive efficacy as people age and environmental enrichment may aid in its maintenance and recovery.
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Affiliation(s)
- Michael Leon
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, United States
| | - Cynthia Woo
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, United States
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57
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Greater neural responses to trajectory errors are associated with superior force field adaptation in older adults. Exp Gerontol 2018; 110:105-117. [PMID: 29870754 DOI: 10.1016/j.exger.2018.05.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 12/17/2022]
Abstract
Although age-related declines in cognitive, sensory and motor capacities are well documented, current evidence is mixed as to whether or not aging impairs sensorimotor adaptation to a novel dynamic environment. More importantly, the extent to which any deficits in sensorimotor adaptation are due to general impairments in neural plasticity, or impairments in the specific processes that drive adaptation is unclear. Here we investigated whether there are age-related differences in electrophysiological responses to reaching endpoint and trajectory errors caused by a novel force field, and whether markers of error processing relate to the ability of older adults to adapt their movements. Older and young adults (N = 24/group, both sexes) performed 600 reaches to visual targets, and received audio-visual feedback about task success or failure after each trial. A velocity-dependent curl field pushed the hand to one side during each reach. We extracted ERPs time-locked to movement onset [kinematic error-related negativity (kERN)], and the presentation of success/failure feedback [feedback error-related negativity (fERN)]. At a group level, older adults did not differ from young adults in the rate or extent of sensorimotor adaptation, but EEG responses to both trajectory errors and task errors were reduced in the older group. Most interestingly, the amplitude of the kERN correlated with the rate and extent of sensorimotor adaptation in older adults. Thus, older adults with an impaired capacity for encoding kinematic trajectory errors also have compromised abilities to adapt their movements in a novel dynamic environment.
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58
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Bae S, Lee S, Lee S, Jung S, Makino K, Park H, Shimada H. The role of social frailty in explaining the association between hearing problems and mild cognitive impairment in older adults. Arch Gerontol Geriatr 2018; 78:45-50. [PMID: 29890382 DOI: 10.1016/j.archger.2018.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/13/2018] [Accepted: 05/31/2018] [Indexed: 01/09/2023]
Abstract
BACKGROUND We examined the role of social frailty in the association between hearing problems and mild cognitive impairment (MCI), and investigated which cognitive impairment domains are most strongly involved. METHODS Participants were 4251 older adults (mean age 72.5 ± 5.2 years, 46.1% male) who met the study inclusion criteria. Hearing problems were measured using the Hearing Handicap Inventory for the Elderly. Social frailty was identified using responses to five questions. Participants were divided into four groups depending on the presence of social frailty and hearing problems: control, social frailty, hearing problem, and co-occurrence. We assessed memory, attention, executive function, and processing speed using the National Center for Geriatrics and Gerontology-Functional Assessment Tool. Participants were categorized into normal cognition, single- and multiple-domain MCI, depending on the number of impaired cognitive domains. RESULTS Participants with multiple-domain MCI exhibited the highest odds ratios (OR) of the co-occurrence group (OR: 3.89, 95% confidence intervals [CI]: 1.96-7.72), followed by the social frailty (OR: 2.65, 95% CI: 1.49-4.67), and hearing problem (OR: 1.90, 95% CI: 1.08-3.34) groups, compared with the control group. However, single-domain MCI was not significantly associated with any group. Cognitive domain analysis revealed that impaired executive function and processing speed were associated with the co-occurrence, hearing problem, and social frailty groups, respectively. CONCLUSIONS Social frailty and hearing problems were independently associated with multiple-domain MCI. Comorbid conditions were more strongly associated with multiple-domain MCI. Longitudinal studies are needed to elucidate the causal role of social frailty in the association between hearing impairment and MCI.
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Affiliation(s)
- Seongryu Bae
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan; Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan.
| | - Sangyoon Lee
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan
| | - Sungchul Lee
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan
| | - Songee Jung
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan
| | - Keitaro Makino
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan
| | - Hyuntae Park
- Department of Health Care Science, Dong-A University, 37, 550-Gil Nakdongdaero, Saha, Busan 604-714, South Korea
| | - Hiroyuki Shimada
- Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-8511, Japan
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Rosemann S, Thiel CM. Audio-visual speech processing in age-related hearing loss: Stronger integration and increased frontal lobe recruitment. Neuroimage 2018; 175:425-437. [PMID: 29655940 DOI: 10.1016/j.neuroimage.2018.04.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/09/2018] [Accepted: 04/09/2018] [Indexed: 11/19/2022] Open
Abstract
Hearing loss is associated with difficulties in understanding speech, especially under adverse listening conditions. In these situations, seeing the speaker improves speech intelligibility in hearing-impaired participants. On the neuronal level, previous research has shown cross-modal plastic reorganization in the auditory cortex following hearing loss leading to altered processing of auditory, visual and audio-visual information. However, how reduced auditory input effects audio-visual speech perception in hearing-impaired subjects is largely unknown. We here investigated the impact of mild to moderate age-related hearing loss on processing audio-visual speech using functional magnetic resonance imaging. Normal-hearing and hearing-impaired participants performed two audio-visual speech integration tasks: a sentence detection task inside the scanner and the McGurk illusion outside the scanner. Both tasks consisted of congruent and incongruent audio-visual conditions, as well as auditory-only and visual-only conditions. We found a significantly stronger McGurk illusion in the hearing-impaired participants, which indicates stronger audio-visual integration. Neurally, hearing loss was associated with an increased recruitment of frontal brain areas when processing incongruent audio-visual, auditory and also visual speech stimuli, which may reflect the increased effort to perform the task. Hearing loss modulated both the audio-visual integration strength measured with the McGurk illusion and brain activation in frontal areas in the sentence task, showing stronger integration and higher brain activation with increasing hearing loss. Incongruent compared to congruent audio-visual speech revealed an opposite brain activation pattern in left ventral postcentral gyrus in both groups, with higher activation in hearing-impaired participants in the incongruent condition. Our results indicate that already mild to moderate hearing loss impacts audio-visual speech processing accompanied by changes in brain activation particularly involving frontal areas. These changes are modulated by the extent of hearing loss.
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Affiliation(s)
- Stephanie Rosemann
- Biological Psychology, Department of Psychology, Department for Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany; Cluster of Excellence "Hearing4all", Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
| | - Christiane M Thiel
- Biological Psychology, Department of Psychology, Department for Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany; Cluster of Excellence "Hearing4all", Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
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60
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Koeritzer MA, Rogers CS, Van Engen KJ, Peelle JE. The Impact of Age, Background Noise, Semantic Ambiguity, and Hearing Loss on Recognition Memory for Spoken Sentences. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2018; 61:740-751. [PMID: 29450493 PMCID: PMC5963044 DOI: 10.1044/2017_jslhr-h-17-0077] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 08/28/2017] [Accepted: 09/20/2017] [Indexed: 05/20/2023]
Abstract
PURPOSE The goal of this study was to determine how background noise, linguistic properties of spoken sentences, and listener abilities (hearing sensitivity and verbal working memory) affect cognitive demand during auditory sentence comprehension. METHOD We tested 30 young adults and 30 older adults. Participants heard lists of sentences in quiet and in 8-talker babble at signal-to-noise ratios of +15 dB and +5 dB, which increased acoustic challenge but left the speech largely intelligible. Half of the sentences contained semantically ambiguous words to additionally manipulate cognitive challenge. Following each list, participants performed a visual recognition memory task in which they viewed written sentences and indicated whether they remembered hearing the sentence previously. RESULTS Recognition memory (indexed by d') was poorer for acoustically challenging sentences, poorer for sentences containing ambiguous words, and differentially poorer for noisy high-ambiguity sentences. Similar patterns were observed for Z-transformed response time data. There were no main effects of age, but age interacted with both acoustic clarity and semantic ambiguity such that older adults' recognition memory was poorer for acoustically degraded high-ambiguity sentences than the young adults'. Within the older adult group, exploratory correlation analyses suggested that poorer hearing ability was associated with poorer recognition memory for sentences in noise, and better verbal working memory was associated with better recognition memory for sentences in noise. CONCLUSIONS Our results demonstrate listeners' reliance on domain-general cognitive processes when listening to acoustically challenging speech, even when speech is highly intelligible. Acoustic challenge and semantic ambiguity both reduce the accuracy of listeners' recognition memory for spoken sentences. SUPPLEMENTAL MATERIALS https://doi.org/10.23641/asha.5848059.
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Affiliation(s)
- Margaret A Koeritzer
- Program in Audiology and Communication Sciences, Washington University in St. Louis, MO
| | - Chad S Rogers
- Department of Otolaryngology, Washington University in St. Louis, MO
| | - Kristin J Van Engen
- Department of Psychological and Brain Sciences and Program in Linguistics, Washington University in St. Louis, MO
| | - Jonathan E Peelle
- Department of Otolaryngology, Washington University in St. Louis, MO
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61
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Alain C, Du Y, Bernstein LJ, Barten T, Banai K. Listening under difficult conditions: An activation likelihood estimation meta-analysis. Hum Brain Mapp 2018. [PMID: 29536592 DOI: 10.1002/hbm.24031] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The brain networks supporting speech identification and comprehension under difficult listening conditions are not well specified. The networks hypothesized to underlie effortful listening include regions responsible for executive control. We conducted meta-analyses of auditory neuroimaging studies to determine whether a common activation pattern of the frontal lobe supports effortful listening under different speech manipulations. Fifty-three functional neuroimaging studies investigating speech perception were divided into three independent Activation Likelihood Estimate analyses based on the type of speech manipulation paradigm used: Speech-in-noise (SIN, 16 studies, involving 224 participants); spectrally degraded speech using filtering techniques (15 studies involving 270 participants); and linguistic complexity (i.e., levels of syntactic, lexical and semantic intricacy/density, 22 studies, involving 348 participants). Meta-analysis of the SIN studies revealed higher effort was associated with activation in left inferior frontal gyrus (IFG), left inferior parietal lobule, and right insula. Studies using spectrally degraded speech demonstrated increased activation of the insula bilaterally and the left superior temporal gyrus (STG). Studies manipulating linguistic complexity showed activation in the left IFG, right middle frontal gyrus, left middle temporal gyrus and bilateral STG. Planned contrasts revealed left IFG activation in linguistic complexity studies, which differed from activation patterns observed in SIN or spectral degradation studies. Although there were no significant overlap in prefrontal activation across these three speech manipulation paradigms, SIN and spectral degradation showed overlapping regions in left and right insula. These findings provide evidence that there is regional specialization within the left IFG and differential executive networks underlie effortful listening.
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Affiliation(s)
- Claude Alain
- Rotman Research Institute, Baycrest Health Centre, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Yi Du
- CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Lori J Bernstein
- Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Thijs Barten
- Rotman Research Institute, Baycrest Health Centre, Toronto, Ontario, Canada
| | - Karen Banai
- Department of Communication Sciences and Disorders, University of Haifa, Haifa, Israel
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62
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Zhu Z, Hou X, Yang Y. Reduced Syntactic Processing Efficiency in Older Adults During Sentence Comprehension. Front Psychol 2018; 9:243. [PMID: 29545761 PMCID: PMC5838001 DOI: 10.3389/fpsyg.2018.00243] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 02/14/2018] [Indexed: 11/17/2022] Open
Abstract
Researchers have frequently reported an age-related decline in semantic processing during sentence comprehension. However, it remains unclear whether syntactic processing also declines or whether it remains constant as people age. In the present study, 26 younger adults and 20 older adults were recruited and matched in terms of working memory, general intelligence, verbal intelligence and fluency. They were then asked to make semantic acceptability judgments while completing a Chinese sentence reading task. The behavioral results revealed that the older adults had significantly lower accuracy on measures of semantic and syntactic processing compared to younger adults. Event-related potential (ERP) results showed that during semantic processing, older adults had a significantly reduced amplitude and delayed peak latency of the N400 compared to the younger adults. During syntactic processing, older adults also showed delayed peak latency of the P600 relative to younger adults. Moreover, while P600 amplitude was comparable between the two age groups, larger P600 amplitude was associated with worse performance only in the older adults. Together, the behavioral and ERP data suggest that there is an age-related decline in both semantic and syntactic processing, with a trend toward lower efficiency in syntactic ability.
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Affiliation(s)
- Zude Zhu
- School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, China
- Jiangsu Collaborative Innovation Center for Language Competence, Xuzhou, China
- Jiangsu Key Laboratory of Language and Cognitive Neuroscience, Xuzhou, China
| | - Xiaopu Hou
- School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, China
| | - Yiming Yang
- School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, China
- Jiangsu Collaborative Innovation Center for Language Competence, Xuzhou, China
- Jiangsu Key Laboratory of Language and Cognitive Neuroscience, Xuzhou, China
- Institute of Linguistic Sciences, Jiangsu Normal University, Xuzhou, China
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63
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Is Listening in Noise Worth It? The Neurobiology of Speech Recognition in Challenging Listening Conditions. Ear Hear 2018; 37 Suppl 1:101S-10S. [PMID: 27355759 DOI: 10.1097/aud.0000000000000300] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This review examines findings from functional neuroimaging studies of speech recognition in noise to provide a neural systems level explanation for the effort and fatigue that can be experienced during speech recognition in challenging listening conditions. Neuroimaging studies of speech recognition consistently demonstrate that challenging listening conditions engage neural systems that are used to monitor and optimize performance across a wide range of tasks. These systems appear to improve speech recognition in younger and older adults, but sustained engagement of these systems also appears to produce an experience of effort and fatigue that may affect the value of communication. When considered in the broader context of the neuroimaging and decision making literature, the speech recognition findings from functional imaging studies indicate that the expected value, or expected level of speech recognition given the difficulty of listening conditions, should be considered when measuring effort and fatigue. The authors propose that the behavioral economics or neuroeconomics of listening can provide a conceptual and experimental framework for understanding effort and fatigue that may have clinical significance.
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64
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Cope TE, Sohoglu E, Sedley W, Patterson K, Jones PS, Wiggins J, Dawson C, Grube M, Carlyon RP, Griffiths TD, Davis MH, Rowe JB. Evidence for causal top-down frontal contributions to predictive processes in speech perception. Nat Commun 2017; 8:2154. [PMID: 29255275 PMCID: PMC5735133 DOI: 10.1038/s41467-017-01958-7] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 10/27/2017] [Indexed: 11/09/2022] Open
Abstract
Perception relies on the integration of sensory information and prior expectations. Here we show that selective neurodegeneration of human frontal speech regions results in delayed reconciliation of predictions in temporal cortex. These temporal regions were not atrophic, displayed normal evoked magnetic and electrical power, and preserved neural sensitivity to manipulations of sensory detail. Frontal neurodegeneration does not prevent the perceptual effects of contextual information; instead, prior expectations are applied inflexibly. The precision of predictions correlates with beta power, in line with theoretical models of the neural instantiation of predictive coding. Fronto-temporal interactions are enhanced while participants reconcile prior predictions with degraded sensory signals. Excessively precise predictions can explain several challenging phenomena in frontal aphasias, including agrammatism and subjective difficulties with speech perception. This work demonstrates that higher-level frontal mechanisms for cognitive and behavioural flexibility make a causal functional contribution to the hierarchical generative models underlying speech perception.
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Affiliation(s)
- Thomas E Cope
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK.
| | - E Sohoglu
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, UK
| | - W Sedley
- Institute of Neuroscience, Newcastle University, Newcastle, NE1 7RU, UK
| | - K Patterson
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, UK
| | - P S Jones
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK
| | - J Wiggins
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK
| | - C Dawson
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK
| | - M Grube
- Institute of Neuroscience, Newcastle University, Newcastle, NE1 7RU, UK
| | - R P Carlyon
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, UK
| | - T D Griffiths
- Institute of Neuroscience, Newcastle University, Newcastle, NE1 7RU, UK
| | - Matthew H Davis
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, UK
| | - James B Rowe
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0SZ, UK
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, UK
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65
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Zhu Z, Yang F, Li D, Zhou L, Liu Y, Zhang Y, Chen X. Age-related reduction of adaptive brain response during semantic integration is associated with gray matter reduction. PLoS One 2017; 12:e0189462. [PMID: 29236772 PMCID: PMC5728512 DOI: 10.1371/journal.pone.0189462] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/28/2017] [Indexed: 11/18/2022] Open
Abstract
While aging is associated with increased knowledge, it is also associated with decreased semantic integration. To investigate brain activation changes during semantic integration, a sample of forty-eight 25–75 year-old adults read sentences with high cloze (HC) and low cloze (LC) probability while functional magnetic resonance imaging was conducted. Significant age-related reduction of cloze effect (LC vs. HC) was found in several regions, especially the left middle frontal gyrus (MFG) and right inferior frontal gyrus (IFG), which play an important role in semantic integration. Moreover, when accounting for global gray matter volume reduction, the age-cloze correlation in the left MFG and right IFG was absent. The results suggest that brain structural atrophy may disrupt brain response in aging brains, which then show less brain engagement in semantic integration.
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Affiliation(s)
- Zude Zhu
- School of Linguistics Sciences and Arts, and Collaborative Innovation Center for Language Competence, Jiangsu Normal University, Xuzhou, China
- * E-mail: (ZZ); (XC)
| | | | | | | | - Ying Liu
- Ningcheng Central Hospital, Chifeng, China
| | - Ying Zhang
- Sucheng People’s Hospital, Suqian, China
| | - Xuezhi Chen
- Ningcheng Central Hospital, Chifeng, China
- * E-mail: (ZZ); (XC)
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66
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Cope TE, Wilson B, Robson H, Drinkall R, Dean L, Grube M, Jones PS, Patterson K, Griffiths TD, Rowe JB, Petkov CI. Artificial grammar learning in vascular and progressive non-fluent aphasias. Neuropsychologia 2017; 104:201-213. [PMID: 28843341 PMCID: PMC5637161 DOI: 10.1016/j.neuropsychologia.2017.08.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/15/2017] [Accepted: 08/17/2017] [Indexed: 11/24/2022]
Abstract
Patients with non-fluent aphasias display impairments of expressive and receptive grammar. This has been attributed to deficits in processing configurational and hierarchical sequencing relationships. This hypothesis had not been formally tested. It was also controversial whether impairments are specific to language, or reflect domain general deficits in processing structured auditory sequences. Here we used an artificial grammar learning paradigm to compare the abilities of controls to participants with agrammatic aphasia of two different aetiologies: stroke and frontotemporal dementia. Ten patients with non-fluent variant primary progressive aphasia (nfvPPA), 12 with non-fluent aphasia due to stroke, and 11 controls implicitly learned a novel mixed-complexity artificial grammar designed to assess processing of increasingly complex sequencing relationships. We compared response profiles for otherwise identical sequences of speech tokens (nonsense words) and tone sweeps. In all three groups the ability to detect grammatical violations varied with sequence complexity, with performance improving over time and being better for adjacent than non-adjacent relationships. Patients performed less well than controls overall, and this was related more strongly to aphasia severity than to aetiology. All groups improved with practice and performed well at a control task of detecting oddball nonwords. Crucially, group differences did not interact with sequence complexity, demonstrating that aphasic patients were not disproportionately impaired on complex structures. Hierarchical cluster analysis revealed that response patterns were very similar across all three groups, but very different between the nonsense word and tone tasks, despite identical artificial grammar structures. Overall, we demonstrate that agrammatic aphasics of two different aetiologies are not disproportionately impaired on complex sequencing relationships, and that the learning of phonological and non-linguistic sequences occurs independently. The similarity of profiles of discriminatory abilities and rule learning across groups suggests that insights from previous studies of implicit sequence learning in vascular aphasia are likely to prove applicable in nfvPPA.
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Affiliation(s)
- Thomas E Cope
- Department of Clinical Neurosciences, University of Cambridge, UK; Institute of Neuroscience, Newcastle University, UK.
| | | | - Holly Robson
- School of Psychology and Clinical Language Sciences, University of Reading, UK
| | - Rebecca Drinkall
- School of Psychology and Clinical Language Sciences, University of Reading, UK
| | - Lauren Dean
- Institute of Neuroscience, Newcastle University, UK
| | - Manon Grube
- Institute of Neuroscience, Newcastle University, UK
| | - P Simon Jones
- Department of Clinical Neurosciences, University of Cambridge, UK
| | - Karalyn Patterson
- Department of Clinical Neurosciences, University of Cambridge, UK; Medical Research Council Cognition and Brain Sciences Unit, Cambridge, UK
| | | | - James B Rowe
- Department of Clinical Neurosciences, University of Cambridge, UK; Medical Research Council Cognition and Brain Sciences Unit, Cambridge, UK
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67
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Vaden KI, Teubner-Rhodes S, Ahlstrom JB, Dubno JR, Eckert MA. Cingulo-opercular activity affects incidental memory encoding for speech in noise. Neuroimage 2017. [PMID: 28624645 DOI: 10.1016/j.neuroimage.2017.06.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Correctly understood speech in difficult listening conditions is often difficult to remember. A long-standing hypothesis for this observation is that the engagement of cognitive resources to aid speech understanding can limit resources available for memory encoding. This hypothesis is consistent with evidence that speech presented in difficult conditions typically elicits greater activity throughout cingulo-opercular regions of frontal cortex that are proposed to optimize task performance through adaptive control of behavior and tonic attention. However, successful memory encoding of items for delayed recognition memory tasks is consistently associated with increased cingulo-opercular activity when perceptual difficulty is minimized. The current study used a delayed recognition memory task to test competing predictions that memory encoding for words is enhanced or limited by the engagement of cingulo-opercular activity during challenging listening conditions. An fMRI experiment was conducted with twenty healthy adult participants who performed a word identification in noise task that was immediately followed by a delayed recognition memory task. Consistent with previous findings, word identification trials in the poorer signal-to-noise ratio condition were associated with increased cingulo-opercular activity and poorer recognition memory scores on average. However, cingulo-opercular activity decreased for correctly identified words in noise that were not recognized in the delayed memory test. These results suggest that memory encoding in difficult listening conditions is poorer when elevated cingulo-opercular activity is not sustained. Although increased attention to speech when presented in difficult conditions may detract from more active forms of memory maintenance (e.g., sub-vocal rehearsal), we conclude that task performance monitoring and/or elevated tonic attention supports incidental memory encoding in challenging listening conditions.
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Affiliation(s)
- Kenneth I Vaden
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, United States.
| | - Susan Teubner-Rhodes
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, United States
| | - Jayne B Ahlstrom
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, United States
| | - Judy R Dubno
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, United States
| | - Mark A Eckert
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, United States.
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68
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Rosemann S, Gießing C, Özyurt J, Carroll R, Puschmann S, Thiel CM. The Contribution of Cognitive Factors to Individual Differences in Understanding Noise-Vocoded Speech in Young and Older Adults. Front Hum Neurosci 2017. [PMID: 28638329 PMCID: PMC5461255 DOI: 10.3389/fnhum.2017.00294] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Noise-vocoded speech is commonly used to simulate the sensation after cochlear implantation as it consists of spectrally degraded speech. High individual variability exists in learning to understand both noise-vocoded speech and speech perceived through a cochlear implant (CI). This variability is partly ascribed to differing cognitive abilities like working memory, verbal skills or attention. Although clinically highly relevant, up to now, no consensus has been achieved about which cognitive factors exactly predict the intelligibility of speech in noise-vocoded situations in healthy subjects or in patients after cochlear implantation. We aimed to establish a test battery that can be used to predict speech understanding in patients prior to receiving a CI. Young and old healthy listeners completed a noise-vocoded speech test in addition to cognitive tests tapping on verbal memory, working memory, lexicon and retrieval skills as well as cognitive flexibility and attention. Partial-least-squares analysis revealed that six variables were important to significantly predict vocoded-speech performance. These were the ability to perceive visually degraded speech tested by the Text Reception Threshold, vocabulary size assessed with the Multiple Choice Word Test, working memory gauged with the Operation Span Test, verbal learning and recall of the Verbal Learning and Retention Test and task switching abilities tested by the Comprehensive Trail-Making Test. Thus, these cognitive abilities explain individual differences in noise-vocoded speech understanding and should be considered when aiming to predict hearing-aid outcome.
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Affiliation(s)
- Stephanie Rosemann
- Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany.,Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany
| | - Carsten Gießing
- Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany
| | - Jale Özyurt
- Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany
| | - Rebecca Carroll
- Cluster of Excellence "Hearing4all", Carl von Ossietzky Universität OldenburgOldenburg, Germany.,Institute of Dutch Studies, Carl von Ossietzky Universität OldenburgOldenburg, Germany
| | - Sebastian Puschmann
- Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany
| | - Christiane M Thiel
- Biological Psychology, Department of Psychology, European Medical School, Carl von Ossietzky Universität OldenburgOldenburg, Germany.,Cluster of Excellence "Hearing4all", Carl von Ossietzky Universität OldenburgOldenburg, Germany
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69
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Thomson RS, Auduong P, Miller AT, Gurgel RK. Hearing loss as a risk factor for dementia: A systematic review. Laryngoscope Investig Otolaryngol 2017; 2:69-79. [PMID: 28894825 PMCID: PMC5527366 DOI: 10.1002/lio2.65] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/12/2016] [Accepted: 12/19/2016] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To review evidence of hearing loss as a risk factor for dementia. Data Sources: PubMed Review methods: A systematic review was conducted using the PubMed database using the search terms (hearing loss OR presbycusis) AND (dementia OR cognitive decline). Initially, 488 articles were obtained. Only those studies evaluating an association between hearing loss and incident dementia or cognitive decline were included in the analysis. This resulted in 17 articles which were thoroughly evaluated with consideration for study design, method for determining hearing loss and cognitive status, relevant covariates and confounding factors, and key findings. RESULTS All of the 17 articles meeting inclusion criteria indicate that hearing loss is associated with dementia or cognitive decline. The methods used among the studies for ascertaining hearing loss and dementia were notably varied. For hearing loss, peripheral auditory function was tested far more than central auditory function. For peripheral audition, pure tone audiometry was the most commonly reported method for defining hearing loss. Only a few studies measured central auditory function by using the Synthetic Sentence Identification with Ipsilateral Competing Message test (SSI-ICM) and the Staggered Spondaic Word Test (SSW). Dementia was most often defined using the Mini Mental State Exam (MMSE). However, many studies used extensive batteries of tests to define cognitive status, often including a neuropsychologist. Confounding variables such as cardiovascular risk factors were measured in 17 studies and family history of dementia was only evaluated in 1 study. Overall, the methods used by studies to ascertain hearing loss, cognitive status and other variables are valid, making their evaluation appear reliable. CONCLUSION While each of the studies included in this study utilized slightly different methods for evaluating participants, each of them demonstrated that hearing loss is associated with higher incidence of dementia in older adults. LEVEL OF EVIDENCE Level V, systematic review.
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Affiliation(s)
- Rhett S Thomson
- Department of Surgery University of Utah Salt Lake City Utah U.S.A.,Division of Otolaryngology University of Utah Salt Lake City Utah U.S.A
| | - Priscilla Auduong
- Department of Surgery University of Utah Salt Lake City Utah U.S.A.,Division of Otolaryngology University of Utah Salt Lake City Utah U.S.A
| | - Alexander T Miller
- Department of Surgery University of Utah Salt Lake City Utah U.S.A.,Division of Otolaryngology University of Utah Salt Lake City Utah U.S.A
| | - Richard K Gurgel
- Department of Surgery University of Utah Salt Lake City Utah U.S.A.,Division of Otolaryngology University of Utah Salt Lake City Utah U.S.A
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70
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Indices of Effortful Listening Can Be Mined from Existing Electroencephalographic Data. Ear Hear 2017; 38:e69-e73. [DOI: 10.1097/aud.0000000000000354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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71
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Darkow R, Martin A, Würtz A, Flöel A, Meinzer M. Transcranial direct current stimulation effects on neural processing in post-stroke aphasia. Hum Brain Mapp 2016; 38:1518-1531. [PMID: 27859982 DOI: 10.1002/hbm.23469] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 10/14/2016] [Accepted: 11/06/2016] [Indexed: 12/18/2022] Open
Abstract
Non-invasive transcranial direct current stimulation (tDCS) can enhance recovery after stroke. However, fundamental knowledge about how tDCS impacts neural processing in the lesioned human brain is currently lacking. In the present study, it was investigated how tDCS modulates brain function in patients with post-stroke language impairment (aphasia). In a cross-over, randomized trial, patients named pictures of common objects during functional magnetic resonance imaging (fMRI). Concurrently, excitatory (anodal-) or sham-tDCS (1 mA, 20 min, or 30 s, respectively) was administered to the left primary motor cortex, a montage with demonstrated potential to improve aphasic language. By choosing stimuli that could reliable be named by the patients, the authors aimed to derive a pure measure of stimulation effects that was independent of treatment or performance effects and to assess how tDCS interacts with the patients' residual language network. Univariate fMRI data analysis revealed reduced activity in domain-general regions mediating high-level cognitive control during anodal-tDCS. Independent component functional network analysis demonstrated selectively increased language network activity and an inter-correlated shift from higher to lower frequency bands, indicative of increased within-network communication. Compared with healthy controls, anodal-tDCS resulted in overall "normalization" of brain function in the patients. These results demonstrate for the first time how tDCS modulates neural processing in stroke patients. Such information is crucial to assure that behavioral treatments targeting specific neural circuits overlap with regions that are modulated by tDCS, thereby maximizing stimulation effects during therapy. Hum Brain Mapp 38:1518-1531, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Robert Darkow
- Department of Neurology, NeuroCure Clinical Research Center, and Center of Stroke Research Berlin, Berlin, Charité University Medicine, Berlin, 10117, Germany
| | - Andrew Martin
- The University of Queensland, Centre for Clinical Research, Brisbane Queensland, 4029, Australia
| | - Anna Würtz
- Department of Neurology, NeuroCure Clinical Research Center, and Center of Stroke Research Berlin, Berlin, Charité University Medicine, Berlin, 10117, Germany
| | - Agnes Flöel
- Department of Neurology, NeuroCure Clinical Research Center, and Center of Stroke Research Berlin, Berlin, Charité University Medicine, Berlin, 10117, Germany
| | - Marcus Meinzer
- Department of Neurology, NeuroCure Clinical Research Center, and Center of Stroke Research Berlin, Berlin, Charité University Medicine, Berlin, 10117, Germany.,The University of Queensland, Centre for Clinical Research, Brisbane Queensland, 4029, Australia
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72
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Vaden KI, Kuchinsky SE, Ahlstrom JB, Teubner-Rhodes SE, Dubno JR, Eckert MA. Cingulo-Opercular Function During Word Recognition in Noise for Older Adults with Hearing Loss. Exp Aging Res 2016; 42:67-82. [PMID: 26683042 DOI: 10.1080/0361073x.2016.1108784] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND/STUDY CONTEXT Adaptive control, reflected by elevated activity in cingulo-opercular brain regions, optimizes performance in challenging tasks by monitoring outcomes and adjusting behavior. For example, cingulo-opercular function benefits trial-level word recognition in noise for normal-hearing adults. Because auditory system deficits may limit the communicative benefit from adaptive control, we examined the extent to which cingulo-opercular engagement supports word recognition in noise for older adults with hearing loss (HL). METHODS Participants were selected to form groups with Less HL (n = 12; mean pure tone threshold, pure tone average [PTA] = 19.2 ± 4.8 dB HL [hearing level]) and More HL (n = 12; PTA = 38.4 ± 4.5 dB HL, 0.25-8 kHz, both ears). A word recognition task was performed with words presented in multitalker babble at +3 or +10 dB signal-to-noise ratios (SNRs) during a sparse acquisition fMRI experiment. The participants were middle-aged and older (ages: 64.1 ± 8.4 years) English speakers with no history of neurological or psychiatric diagnoses. RESULTS Elevated cingulo-opercular activity occurred with increased likelihood of correct word recognition on the next trial (t(23) = 3.28, p = .003), and this association did not differ between hearing loss groups. During trials with word recognition errors, the More HL group exhibited higher blood oxygen level-dependent (BOLD) contrast in occipital and parietal regions compared with the Less HL group. Across listeners, more pronounced cingulo-opercular activity during recognition errors was associated with better overall word recognition performance. CONCLUSION The trial-level word recognition benefit from cingulo-opercular activity was equivalent for both hearing loss groups. When speech audibility and performance levels are similar for older adults with mild to moderate hearing loss, cingulo-opercular adaptive control contributes to word recognition in noise.
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Affiliation(s)
- Kenneth I Vaden
- a Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery , Medical University of South Carolina , Charleston , South Carolina , USA
| | - Stefanie E Kuchinsky
- b Center for Advanced Study of Language , University of Maryland , College Park , Maryland , USA
| | - Jayne B Ahlstrom
- a Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery , Medical University of South Carolina , Charleston , South Carolina , USA
| | - Susan E Teubner-Rhodes
- a Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery , Medical University of South Carolina , Charleston , South Carolina , USA
| | - Judy R Dubno
- a Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery , Medical University of South Carolina , Charleston , South Carolina , USA
| | - Mark A Eckert
- a Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery , Medical University of South Carolina , Charleston , South Carolina , USA
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73
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Habicht J, Kollmeier B, Neher T. Are Experienced Hearing Aid Users Faster at Grasping the Meaning of a Sentence Than Inexperienced Users? An Eye-Tracking Study. Trends Hear 2016; 20:20/0/2331216516660966. [PMID: 27595793 PMCID: PMC5014089 DOI: 10.1177/2331216516660966] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study assessed the effects of hearing aid (HA) experience on how quickly a participant can grasp the meaning of an acoustic sentence-in-noise stimulus presented together with two similar pictures that either correctly (target) or incorrectly (competitor) depict the meaning conveyed by the sentence. Using an eye tracker, the time taken by the participant to start fixating the target (the processing time) was measured for two levels of linguistic complexity (low vs. high) and three HA conditions: clinical linear amplification (National Acoustic Laboratories-Revised), single-microphone noise reduction with National Acoustic Laboratories-Revised, and linear amplification ensuring a sensation level of ≥ 15 dB up to at least 4 kHz for the speech material used here. Timed button presses to the target stimuli after the end of the sentences (offline reaction times) were also collected. Groups of experienced (eHA) and inexperienced (iHA) HA users matched in terms of age, hearing loss, and working memory capacity took part (N = 15 each). For the offline reaction times, no effects were found. In contrast, processing times increased with linguistic complexity. Furthermore, for all HA conditions, processing times were longer (poorer) for the iHA group than for the eHA group, despite comparable speech recognition performance. Taken together, these results indicate that processing times are more sensitive to speech processing-related factors than offline reaction times. Furthermore, they support the idea that HA experience positively impacts the ability to process noisy speech quickly, irrespective of the precise gain characteristics.
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Affiliation(s)
- Julia Habicht
- Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Germany
| | - Birger Kollmeier
- Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Germany
| | - Tobias Neher
- Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Germany
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74
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Sugiura M. Functional neuroimaging of normal aging: Declining brain, adapting brain. Ageing Res Rev 2016; 30:61-72. [PMID: 26988858 DOI: 10.1016/j.arr.2016.02.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 02/21/2016] [Accepted: 02/22/2016] [Indexed: 10/22/2022]
Abstract
Early functional neuroimaging research on normal aging brain has been dominated by the interest in cognitive decline. In this framework the age-related compensatory recruitment of prefrontal cortex, in terms of executive system or reduced lateralization, has been established. Further details on these compensatory mechanisms and the findings reflecting cognitive decline, however, remain the matter of intensive investigations. Studies in another framework where age-related neural alteration is considered adaptation to the environmental change are recently burgeoning and appear largely categorized into three domains. The age-related increase in activation of the sensorimotor network may reflect the alteration of the peripheral sensorimotor systems. The increased susceptibility of the network for the mental-state inference to the socioemotional significance may be explained by the age-related motivational shift due to the altered social perception. The age-related change in activation of the self-referential network may be relevant to the focused positive self-concept of elderly driven by a similar motivational shift. Across the domains, the concept of the self and internal model may provide the theoretical bases of this adaptation framework. These two frameworks complement each other to provide a comprehensive view of the normal aging brain.
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75
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Du Y, Buchsbaum BR, Grady CL, Alain C. Increased activity in frontal motor cortex compensates impaired speech perception in older adults. Nat Commun 2016; 7:12241. [PMID: 27483187 PMCID: PMC4974649 DOI: 10.1038/ncomms12241] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 06/15/2016] [Indexed: 11/10/2022] Open
Abstract
Understanding speech in noisy environments is challenging, especially for seniors. Although evidence suggests that older adults increasingly recruit prefrontal cortices to offset reduced periphery and central auditory processing, the brain mechanisms underlying such compensation remain elusive. Here we show that relative to young adults, older adults show higher activation of frontal speech motor areas as measured by functional MRI during a syllable identification task at varying signal-to-noise ratios. This increased activity correlates with improved speech discrimination performance in older adults. Multivoxel pattern classification reveals that despite an overall phoneme dedifferentiation, older adults show greater specificity of phoneme representations in frontal articulatory regions than auditory regions. Moreover, older adults with stronger frontal activity have higher phoneme specificity in frontal and auditory regions. Thus, preserved phoneme specificity and upregulation of activity in speech motor regions provide a means of compensation in older adults for decoding impoverished speech representations in adverse listening conditions. Seniors have difficulties understanding speech in noisy environments and it is known that their brains compensate reduced sensory processing in auditory cortex by engaging prefrontal areas. Here the authors find that phoneme specificity and increased activity in speech motor regions provide a means of compensation for decoding impoverished speech in older adults.
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Affiliation(s)
- Yi Du
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada M6A 2E1.,Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
| | - Bradley R Buchsbaum
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada M6A 2E1.,Department of Psychology, University of Toronto, Ontario, Canada M8V 2S4
| | - Cheryl L Grady
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada M6A 2E1.,Department of Psychology, University of Toronto, Ontario, Canada M8V 2S4
| | - Claude Alain
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada M6A 2E1.,Department of Psychology, University of Toronto, Ontario, Canada M8V 2S4
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76
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Cardin V. Effects of Aging and Adult-Onset Hearing Loss on Cortical Auditory Regions. Front Neurosci 2016; 10:199. [PMID: 27242405 PMCID: PMC4862970 DOI: 10.3389/fnins.2016.00199] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 04/22/2016] [Indexed: 11/13/2022] Open
Abstract
Hearing loss is a common feature in human aging. It has been argued that dysfunctions in central processing are important contributing factors to hearing loss during older age. Aging also has well documented consequences for neural structure and function, but it is not clear how these effects interact with those that arise as a consequence of hearing loss. This paper reviews the effects of aging and adult-onset hearing loss in the structure and function of cortical auditory regions. The evidence reviewed suggests that aging and hearing loss result in atrophy of cortical auditory regions and stronger engagement of networks involved in the detection of salient events, adaptive control and re-allocation of attention. These cortical mechanisms are engaged during listening in effortful conditions in normal hearing individuals. Therefore, as a consequence of aging and hearing loss, all listening becomes effortful and cognitive load is constantly high, reducing the amount of available cognitive resources. This constant effortful listening and reduced cognitive spare capacity could be what accelerates cognitive decline in older adults with hearing loss.
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Affiliation(s)
- Velia Cardin
- Department of Experimental Psychology, Deafness, Cognition and Language Research Centre, University College LondonLondon, UK; Department of Behavioural Sciences and Learning, Linnaeus Centre HEAD, Swedish Institute for Disability Research, Linköping UniversityLinköping, Sweden
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77
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Lemke U, Scherpiet S. Oral communication in individuals with hearing impairment-considerations regarding attentional, cognitive and social resources. Front Psychol 2015; 6:998. [PMID: 26236268 PMCID: PMC4505078 DOI: 10.3389/fpsyg.2015.00998] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 07/02/2015] [Indexed: 11/13/2022] Open
Abstract
Traditionally, audiology research has focused primarily on hearing and related disorders. In recent years, however, growing interest and insight has developed into the interaction of hearing and cognition. This applies to a person's listening and speech comprehension ability and the neural realization thereof. The present perspective extends this view to oral communication, when two or more people interact in social context. Specifically, the impact of hearing impairment and cognitive changes with age is discussed. In focus are executive functions, a group of top-down processes that guide attention, thought and action according to goals and intentions. The strategic allocation of the limited cognitive processing capacity among concurrent tasks is often effortful, especially under adverse communication conditions and in old age. Working memory, a sub-function extensively discussed in cognitive hearing science, is here put into the context of other executive and cognitive functions required for oral communication and speech comprehension. Finally, taking an ecological view on hearing impairment, activity limitations and participation restrictions are discussed regarding their psycho-social impact and third-party disability.
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Affiliation(s)
- Ulrike Lemke
- Cognitive and Ecological Audiology, Science and Technology, Phonak AG , Stäfa, Switzerland
| | - Sigrid Scherpiet
- Cognitive and Ecological Audiology, Science and Technology, Phonak AG , Stäfa, Switzerland
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78
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Martins R, Joanette Y, Monchi O. The implications of age-related neurofunctional compensatory mechanisms in executive function and language processing including the new Temporal Hypothesis for Compensation. Front Hum Neurosci 2015; 9:221. [PMID: 25964754 PMCID: PMC4408858 DOI: 10.3389/fnhum.2015.00221] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/07/2015] [Indexed: 11/16/2022] Open
Abstract
As the passage of time structurally alters one’s brain, cognition does not have to suffer the same faith, at least not to the same extent. Indeed, the existence of age-related compensatory mechanisms allow for some cognitive preservation. This paper attempts to coherently review the existing concepts of neurofunctional compensation when applied to two different cognitive domains, namely executive function and language processing. More precisely, we explore the Cognitive reserve (CR) model in healthy aging as well as its two underlying mechanisms: neural reserve and neural compensation. Furthermore, we review the Compensation-Related Utilization of Neural Circuits Hypothesis as well as the Growing Of Life Differences Explains Normal Aging model. Finally, we propose, based on some functional neuroimaging studies, the existence of another compensatory mechanism characterized by age-related delayed cerebral activation allowing for cognitive performance to be preserved at the expense of speed processing: the Temporal Hypothesis for Compensation.
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Affiliation(s)
- Ruben Martins
- Centre de Recherche, Institut Universitaire de Gériatrie de Montréal Montréal, QC, Canada ; Department of Radiology, Faculty of Medicine of the University of Montreal Montréal, QC, Canada ; Department of psychiatry, Faculty of Medicine of McGill University Montreal, QC, Canada
| | - Yves Joanette
- Centre de Recherche, Institut Universitaire de Gériatrie de Montréal Montréal, QC, Canada ; Department of Radiology, Faculty of Medicine of the University of Montreal Montréal, QC, Canada
| | - Oury Monchi
- Centre de Recherche, Institut Universitaire de Gériatrie de Montréal Montréal, QC, Canada ; Department of Radiology, Faculty of Medicine of the University of Montreal Montréal, QC, Canada ; Departments of Clinical Neurosciences, Radiology, and Hotchkiss Bran Institute, University of Calgary Calgary, AB, Canada
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79
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Neural alpha dynamics in younger and older listeners reflect acoustic challenges and predictive benefits. J Neurosci 2015; 35:1458-67. [PMID: 25632123 DOI: 10.1523/jneurosci.3250-14.2015] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Speech comprehension in multitalker situations is a notorious real-life challenge, particularly for older listeners. Younger listeners exploit stimulus-inherent acoustic detail, but are they also actively predicting upcoming information? And further, how do older listeners deal with acoustic and predictive information? To understand the neural dynamics of listening difficulties and according listening strategies, we contrasted neural responses in the alpha-band (∼10 Hz) in younger (20-30 years, n = 18) and healthy older (60-70 years, n = 20) participants under changing task demands in a two-talker paradigm. Electroencephalograms were recorded while humans listened to two spoken digits against a distracting talker and decided whether the second digit was smaller or larger. Acoustic detail (temporal fine structure) and predictiveness (the degree to which the first digit predicted the second) varied orthogonally. Alpha power at widespread scalp sites decreased with increasing acoustic detail (during target digit presentation) but also with increasing predictiveness (in-between target digits). For older compared with younger listeners, acoustic detail had a stronger impact on task performance and alpha power modulation. This suggests that alpha dynamics plays an important role in the changes in listening behavior that occur with age. Last, alpha power variations resulting from stimulus manipulations (of acoustic detail and predictiveness) as well as task-independent overall alpha power were related to subjective listening effort. The present data show that alpha dynamics is a promising neural marker of individual difficulties as well as age-related changes in sensation, perception, and comprehension in complex communication situations.
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80
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Wingfield A, Peelle JE. The effects of hearing loss on neural processing and plasticity. Front Syst Neurosci 2015; 9:35. [PMID: 25798095 PMCID: PMC4351590 DOI: 10.3389/fnsys.2015.00035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 02/19/2015] [Indexed: 11/28/2022] Open
Affiliation(s)
- Arthur Wingfield
- Volen National Center for Complex Systems, Brandeis University Waltham, MA, USA
| | - Jonathan E Peelle
- Department of Otolaryngology, Washington University in St. Louis St. Louis, MO, USA
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81
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Vaden KI, Kuchinsky SE, Ahlstrom JB, Dubno JR, Eckert MA. Cortical activity predicts which older adults recognize speech in noise and when. J Neurosci 2015; 35:3929-37. [PMID: 25740521 PMCID: PMC4348188 DOI: 10.1523/jneurosci.2908-14.2015] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 01/14/2015] [Accepted: 01/28/2015] [Indexed: 11/21/2022] Open
Abstract
Speech recognition in noise can be challenging for older adults and elicits elevated activity throughout a cingulo-opercular network that is hypothesized to monitor and modify behaviors to optimize performance. A word recognition in noise experiment was used to test the hypothesis that cingulo-opercular engagement provides performance benefit for older adults. Healthy older adults (N = 31; 50-81 years of age; mean pure tone thresholds <32 dB HL from 0.25 to 8 kHz, best ear; species: human) performed word recognition in multitalker babble at 2 signal-to-noise ratios (SNR = +3 or +10 dB) during a sparse sampling fMRI experiment. Elevated cingulo-opercular activity was associated with an increased likelihood of correct recognition on the following trial independently of SNR and performance on the preceding trial. The cingulo-opercular effect increased for participants with the best overall performance. These effects were lower for older adults compared with a younger, normal-hearing adult sample (N = 18). Visual cortex activity also predicted trial-level recognition for the older adults, which resulted from discrete decreases in activity before errors and occurred for the oldest adults with the poorest recognition. Participants demonstrating larger visual cortex effects also had reduced fractional anisotropy in an anterior portion of the left inferior frontal-occipital fasciculus, which projects between frontal and occipital regions where activity predicted word recognition. Together, the results indicate that older adults experience performance benefit from elevated cingulo-opercular activity, but not to the same extent as younger adults, and that declines in attentional control can limit word recognition.
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Affiliation(s)
- Kenneth I Vaden
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425, and
| | - Stefanie E Kuchinsky
- Center for Advanced Study of Language, University of Maryland, College Park, Maryland 20742
| | - Jayne B Ahlstrom
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425, and
| | - Judy R Dubno
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425, and
| | - Mark A Eckert
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425, and
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82
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Zekveld AA, Heslenfeld DJ, Johnsrude IS, Versfeld NJ, Kramer SE. The eye as a window to the listening brain: Neural correlates of pupil size as a measure of cognitive listening load. Neuroimage 2014; 101:76-86. [DOI: 10.1016/j.neuroimage.2014.06.069] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/26/2014] [Accepted: 06/28/2014] [Indexed: 11/26/2022] Open
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