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Billig AJ, Lad M, Sedley W, Griffiths TD. The hearing hippocampus. Prog Neurobiol 2022; 218:102326. [PMID: 35870677 PMCID: PMC10510040 DOI: 10.1016/j.pneurobio.2022.102326] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/08/2022] [Accepted: 07/18/2022] [Indexed: 11/17/2022]
Abstract
The hippocampus has a well-established role in spatial and episodic memory but a broader function has been proposed including aspects of perception and relational processing. Neural bases of sound analysis have been described in the pathway to auditory cortex, but wider networks supporting auditory cognition are still being established. We review what is known about the role of the hippocampus in processing auditory information, and how the hippocampus itself is shaped by sound. In examining imaging, recording, and lesion studies in species from rodents to humans, we uncover a hierarchy of hippocampal responses to sound including during passive exposure, active listening, and the learning of associations between sounds and other stimuli. We describe how the hippocampus' connectivity and computational architecture allow it to track and manipulate auditory information - whether in the form of speech, music, or environmental, emotional, or phantom sounds. Functional and structural correlates of auditory experience are also identified. The extent of auditory-hippocampal interactions is consistent with the view that the hippocampus makes broad contributions to perception and cognition, beyond spatial and episodic memory. More deeply understanding these interactions may unlock applications including entraining hippocampal rhythms to support cognition, and intervening in links between hearing loss and dementia.
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Affiliation(s)
| | - Meher Lad
- Translational and Clinical Research Institute, Newcastle University Medical School, Newcastle upon Tyne, UK
| | - William Sedley
- Translational and Clinical Research Institute, Newcastle University Medical School, Newcastle upon Tyne, UK
| | - Timothy D Griffiths
- Biosciences Institute, Newcastle University Medical School, Newcastle upon Tyne, UK; Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK; Human Brain Research Laboratory, Department of Neurosurgery, University of Iowa Hospitals and Clinics, Iowa City, USA
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Zhuang H, Yang J, Huang Z, Liu H, Li X, Zhang H, Wang J, Yu S, Liu K, Liu R, Bi M, Wang J, Salvi RJ, Hu B, Teng G, Liu L. Accelerated age-related decline in hippocampal neurogenesis in mice with noise-induced hearing loss is associated with hippocampal microglial degeneration. Aging (Albany NY) 2020; 12:19493-19519. [PMID: 33041264 PMCID: PMC7732316 DOI: 10.18632/aging.103898] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/23/2020] [Indexed: 01/24/2023]
Abstract
Large-scale epidemiological surveys suggest that hearing loss (HL) is a significant risk factor for dementia. We previously showed that noise-induced HL (NIHL) impairs hippocampal cognitive function and decreases hippocampal neurogenesis and neuronal complexity, suggesting a causal role of HL in dementia. To further investigate the influence of acquired peripheral HL on hippocampal neurogenesis with the aging process as well as the underlying mechanism, we produced NIHL in male CBA/J mice and assessed hippocampal neurogenesis and microglial morphology in the auditory brain and hippocampus at 4 days post-noise exposure (DPN) or 1, 3, 6, or 12 months post-noise exposure (MPN) by immunofluorescence labeling. We found that the age-related decline in hippocampal neurogenesis was accelerated in mice with NIHL. Furthermore, in mice with NIHL, prolonged microglial activation occurred from 1 MPN to 12 MPN across multiple auditory nuclei, while aggravated microglial deterioration occurred in the hippocampus and correlated with the age-related decline in hippocampal neurogenesis. These results suggest that acquired peripheral HL accelerates the age-related decline in hippocampal neurogenesis and that hippocampal microglial degeneration may contribute to the development of neurodegeneration following acquired peripheral HL.
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Affiliation(s)
- Hong Zhuang
- Department of Physiology, Medical College, Southeast University, Nanjing 210009, China
| | - Jing Yang
- Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Zhihui Huang
- Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Haiqing Liu
- Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Xiaobo Li
- Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Hongyu Zhang
- Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Jiadong Wang
- Medical College, Southeast University, Nanjing 210009, China
| | - Shen Yu
- Medical College, Southeast University, Nanjing 210009, China
| | - Kefei Liu
- Kangda College of Nanjing Medical University, Lianyungang 222000, China
| | - Rui Liu
- Medical College, Southeast University, Nanjing 210009, China
| | - Mingze Bi
- Medical College, Southeast University, Nanjing 210009, China
| | - Jian Wang
- School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Richard J. Salvi
- Center for Hearing and Deafness, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA
| | - Bohua Hu
- Center for Hearing and Deafness, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA
| | - Gaojun Teng
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing 210009, China
| | - Lijie Liu
- Department of Physiology, Medical College, Southeast University, Nanjing 210009, China
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Antón-Méndez I, Talk A, Johnston S. Gaze direction reveals implicit item and source memory in older adults. PLoS One 2019; 14:e0226018. [PMID: 31805158 PMCID: PMC6894845 DOI: 10.1371/journal.pone.0226018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 11/19/2019] [Indexed: 12/02/2022] Open
Abstract
This study looked at eye movements in relation to source memory in older adults. Participants first studied images of common objects appearing in different quadrants of a screen. After a delay, they were shown cues one at a time presented in all four quadrants. Participants stated whether or not the cue had been seen before and in which location. Participants also rated level of confidence in their responses. In trials where participants either claimed they have not seen a previously presented cue or placed it in an incorrect location, they looked significantly more at the correct quadrant. The proportion of time looking at the correct quadrants during incorrect responses was not related to confidence ratings. These results suggest that eye gaze during the memory task does not reflect memory retrieval below the threshold of verbal report. They instead point to an implicit form of source memory in humans that is accessible to eye movements but not to verbal responses.
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Affiliation(s)
- Inés Antón-Méndez
- Discipline of Linguistics, School of Humanities, Arts and Social Sciences, University of New England, Armidale, Australia
- * E-mail: (IAM); (AT)
| | - Andrew Talk
- School of Psychology, University of New England, Armidale, Australia
- * E-mail: (IAM); (AT)
| | - Simone Johnston
- School of Psychology, University of New England, Armidale, Australia
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Sotelo MI, Bingman VP, Muzio RN. The Mating Call of the Terrestrial Toad, Rhinella arenarum, as a Cue for Spatial Orientation and Its Associated Brain Activity. BRAIN, BEHAVIOR AND EVOLUTION 2019; 94:7-17. [PMID: 31770764 DOI: 10.1159/000504122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 10/13/2019] [Indexed: 11/19/2022]
Abstract
Acoustic communication is essential for reproduction and predator avoidance in many anuran species. For example, mating calls are generally produced by males and represent a conspicuous communication signal employed during the breeding season. Although anuran mating calls have been largely studied to analyze content and phonotaxis toward choruses, they are rarely discussed as sources of information guiding spatial behavior in broader contexts. This is striking if we consider that previous studies have shown anurans to be impressive navigators. In the current study, we investigated whether terrestrial toad (Rhinella arenarum) males can use a mating call as a spatial cue to locate a water reward in a laboratory maze. Male toads could indeed learn the location of a reward guided by a mating call. This navigational ability, as indicated by c-Fos, was associated with greater neuronal activity in the telencephalic hippocampal formation (HF; also referred to in amphibians as medial pallium), the medial septum (MS), and the central amygdala (CeA). HF and MS are telencephalic structures associated with spatial navigation in mammals and other vertebrates. The CeA, by contrast, has been studied in the context of acoustic processing and communication in other amphibian species. The results are discussed in the framework of an evolutionary conserved, HF-septal spatial-cognitive network shared by amphibians and mammals.
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Affiliation(s)
- María I Sotelo
- Department of Psychology, Literature, Science and Art (LSA), University of Michigan, Ann Arbor, Michigan, USA,
| | - Verner P Bingman
- Department of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Bowling Green, Ohio, USA
| | - Rubén N Muzio
- Instituto de Biología y Medicina Experimental (IBYME-CONICET) and Facultad de, Psicología, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
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