1
|
Bondanelli G, Deneux T, Bathellier B, Ostojic S. Network dynamics underlying OFF responses in the auditory cortex. eLife 2021; 10:e53151. [PMID: 33759763 PMCID: PMC8057817 DOI: 10.7554/elife.53151] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/19/2021] [Indexed: 11/13/2022] Open
Abstract
Across sensory systems, complex spatio-temporal patterns of neural activity arise following the onset (ON) and offset (OFF) of stimuli. While ON responses have been widely studied, the mechanisms generating OFF responses in cortical areas have so far not been fully elucidated. We examine here the hypothesis that OFF responses are single-cell signatures of recurrent interactions at the network level. To test this hypothesis, we performed population analyses of two-photon calcium recordings in the auditory cortex of awake mice listening to auditory stimuli, and compared them to linear single-cell and network models. While the single-cell model explained some prominent features of the data, it could not capture the structure across stimuli and trials. In contrast, the network model accounted for the low-dimensional organization of population responses and their global structure across stimuli, where distinct stimuli activated mostly orthogonal dimensions in the neural state-space.
Collapse
Affiliation(s)
- Giulio Bondanelli
- Laboratoire de Neurosciences Cognitives et Computationelles, Département d’études cognitives, ENS, PSL University, INSERMParisFrance
- Neural Computation Laboratory, Center for Human Technologies, Istituto Italiano di Tecnologia (IIT)GenoaItaly
| | - Thomas Deneux
- Départment de Neurosciences Intégratives et Computationelles (ICN), Institut des Neurosciences Paris-Saclay (NeuroPSI), UMR 9197 CNRS, Université Paris SudGif-sur-YvetteFrance
| | - Brice Bathellier
- Départment de Neurosciences Intégratives et Computationelles (ICN), Institut des Neurosciences Paris-Saclay (NeuroPSI), UMR 9197 CNRS, Université Paris SudGif-sur-YvetteFrance
- Institut Pasteur, INSERM, Institut de l’AuditionParisFrance
| | - Srdjan Ostojic
- Laboratoire de Neurosciences Cognitives et Computationelles, Département d’études cognitives, ENS, PSL University, INSERMParisFrance
| |
Collapse
|
2
|
Lohse M, Bajo VM, King AJ. Development, organization and plasticity of auditory circuits: Lessons from a cherished colleague. Eur J Neurosci 2018; 49:990-1004. [PMID: 29804304 PMCID: PMC6519211 DOI: 10.1111/ejn.13979] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/11/2018] [Accepted: 05/23/2018] [Indexed: 12/20/2022]
Abstract
Ray Guillery was a neuroscientist known primarily for his ground-breaking studies on the development of the visual pathways and subsequently on the nature of thalamocortical processing loops. The legacy of his work, however, extends well beyond the visual system. Thanks to Ray Guillery's pioneering anatomical studies, the ferret has become a widely used animal model for investigating the development and plasticity of sensory processing. This includes our own work on the auditory system, where experiments in ferrets have revealed the role of sensory experience during development in shaping the neural circuits responsible for sound localization, as well as the capacity of the mature brain to adapt to changes in inputs resulting from hearing loss. Our research has also built on Ray Guillery's ideas about the possible functions of the massive descending projections that link sensory areas of the cerebral cortex to the thalamus and other subcortical targets, by demonstrating a role for corticothalamic feedback in the perception of complex sounds and for corticollicular projection neurons in learning to accommodate altered auditory spatial cues. Finally, his insights into the organization and functions of transthalamic corticocortical connections have inspired a raft of research, including by our own laboratory, which has attempted to identify how information flows through the thalamus.
Collapse
Affiliation(s)
- Michael Lohse
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Victoria M Bajo
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Andrew J King
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| |
Collapse
|
3
|
|
4
|
Tsukano H, Horie M, Ohga S, Takahashi K, Kubota Y, Hishida R, Takebayashi H, Shibuki K. Reconsidering Tonotopic Maps in the Auditory Cortex and Lemniscal Auditory Thalamus in Mice. Front Neural Circuits 2017; 11:14. [PMID: 28293178 PMCID: PMC5330090 DOI: 10.3389/fncir.2017.00014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/20/2017] [Indexed: 11/13/2022] Open
Abstract
The auditory thalamus and auditory cortex (AC) are pivotal structures in the central auditory system. However, the thalamocortical mechanisms of processing sounds are largely unknown. Investigation of this process benefits greatly from the use of mice because the mouse is a powerful animal model in which various experimental techniques, especially genetic tools, can be applied. However, the use of mice has been limited in auditory research, and thus even basic anatomical knowledge of the mouse central auditory system has not been sufficiently collected. Recently, optical imaging combined with morphological analyses has enabled the elucidation of detailed anatomical properties of the mouse auditory system. These techniques have uncovered fine AC maps with multiple frequency-organized regions, each of which receives point-to-point thalamocortical projections from different origins inside the lemniscal auditory thalamus, the ventral division of the medial geniculate body (MGv). This precise anatomy now provides a platform for physiological research. In this mini review article, we summarize these recent achievements that will facilitate physiological investigations in the mouse auditory system.
Collapse
Affiliation(s)
- Hiroaki Tsukano
- Department of Neurophysiology, Brain Research Institute, Niigata University Niigata, Japan
| | - Masao Horie
- Division of Neurobiology and Anatomy, Graduate School of Medicine and Dental Sciences, Niigata University Niigata, Japan
| | - Shinpei Ohga
- Department of Neurophysiology, Brain Research Institute, Niigata University Niigata, Japan
| | - Kuniyuki Takahashi
- Division of Otolaryngology, Graduate School of Medicine and Dental Sciences, Niigata University Niigata, Japan
| | - Yamato Kubota
- Division of Otolaryngology, Graduate School of Medicine and Dental Sciences, Niigata University Niigata, Japan
| | - Ryuichi Hishida
- Department of Neurophysiology, Brain Research Institute, Niigata University Niigata, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medicine and Dental Sciences, Niigata University Niigata, Japan
| | - Katsuei Shibuki
- Department of Neurophysiology, Brain Research Institute, Niigata University Niigata, Japan
| |
Collapse
|
5
|
Sherman SM. Thalamus plays a central role in ongoing cortical functioning. Nat Neurosci 2016; 19:533-41. [PMID: 27021938 DOI: 10.1038/nn.4269] [Citation(s) in RCA: 468] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/11/2016] [Indexed: 12/22/2022]
Abstract
Several challenges to current views of thalamocortical processing are offered here. Glutamatergic pathways in thalamus and cortex are divided into two distinct classes: driver and modulator. We suggest that driver inputs are the main conduits of information and that modulator inputs modify how driver inputs are processed. Different driver sources reveal two types of thalamic relays: first order relays receive subcortical driver input (for example, retinal input to the lateral geniculate nucleus), whereas higher order relays (for example, pulvinar) receive driver input from layer 5 of cortex and participate in cortico-thalamo-cortical (or transthalamic) circuits. These transthalamic circuits represent an unappreciated aspect of cortical functioning, which I discuss here. Direct corticocortical connections are often paralleled by transthalamic ones. Furthermore, driver inputs to thalamus, both first and higher order, typically arrive via branching axons, and the transthalamic branch often innervates subcortical motor centers, leading to the suggestion that these inputs to thalamus serve as efference copies.
Collapse
Affiliation(s)
- S Murray Sherman
- Department of Neurobiology, University of Chicago, Chicago, Illinois, USA
| |
Collapse
|
6
|
Lee CC. Exploring functions for the non-lemniscal auditory thalamus. Front Neural Circuits 2015; 9:69. [PMID: 26582978 PMCID: PMC4631820 DOI: 10.3389/fncir.2015.00069] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/15/2015] [Indexed: 01/15/2023] Open
Abstract
The functions of the medial geniculate body (MGB) in normal hearing still remain somewhat enigmatic, in part due to the relatively unexplored properties of the non-lemniscal MGB nuclei. Indeed, the canonical view of the thalamus as a simple relay for transmitting ascending information to the cortex belies a role in higher-order forebrain processes. However, recent anatomical and physiological findings now suggest important information and affective processing roles for the non-primary auditory thalamic nuclei. The non-lemniscal nuclei send and receive feedforward and feedback projections among a wide constellation of midbrain, cortical, and limbic-related sites, which support potential conduits for auditory information flow to higher auditory cortical areas, mediators for transitioning among arousal states, and synchronizers of activity across expansive cortical territories. Considered here is a perspective on the putative and unresolved functional roles of the non-lemniscal nuclei of the MGB.
Collapse
Affiliation(s)
- Charles C Lee
- Department of Comparative Biomedical Sciences, Louisiana State University, School of Veterinary Medicine Baton Rouge, LA, USA
| |
Collapse
|
7
|
Budd J, Kisvarday Z. How do you wire a brain? Front Neuroanat 2013; 7:14. [PMID: 23754989 PMCID: PMC3664766 DOI: 10.3389/fnana.2013.00014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/08/2013] [Indexed: 11/13/2022] Open
Affiliation(s)
- Julian Budd
- Department of Informatics, University of Sussex Brighton, UK
| | | |
Collapse
|
8
|
Bajo VM, King AJ. Cortical modulation of auditory processing in the midbrain. Front Neural Circuits 2013; 6:114. [PMID: 23316140 PMCID: PMC3539853 DOI: 10.3389/fncir.2012.00114] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 12/11/2012] [Indexed: 11/13/2022] Open
Abstract
In addition to their ascending pathways that originate at the receptor cells, all sensory systems are characterized by extensive descending projections. Although the size of these connections often outweighs those that carry information in the ascending auditory pathway, we still have a relatively poor understanding of the role they play in sensory processing. In the auditory system one of the main corticofugal projections links layer V pyramidal neurons with the inferior colliculus (IC) in the midbrain. All auditory cortical fields contribute to this projection, with the primary areas providing the largest outputs to the IC. In addition to medium and large pyramidal cells in layer V, a variety of cell types in layer VI make a small contribution to the ipsilateral corticocollicular projection. Cortical neurons innervate the three IC subdivisions bilaterally, although the contralateral projection is relatively small. The dorsal and lateral cortices of the IC are the principal targets of corticocollicular axons, but input to the central nucleus has also been described in some studies and is distinctive in its laminar topographic organization. Focal electrical stimulation and inactivation studies have shown that the auditory cortex can modify almost every aspect of the response properties of IC neurons, including their sensitivity to sound frequency, intensity, and location. Along with other descending pathways in the auditory system, the corticocollicular projection appears to continually modulate the processing of acoustical signals at subcortical levels. In particular, there is growing evidence that these circuits play a critical role in the plasticity of neural processing that underlies the effects of learning and experience on auditory perception by enabling changes in cortical response properties to spread to subcortical nuclei.
Collapse
Affiliation(s)
- Victoria M. Bajo
- Department of Physiology, Anatomy and Genetics, University of OxfordOxford, UK
| | - Andrew J. King
- Department of Physiology, Anatomy and Genetics, University of OxfordOxford, UK
| |
Collapse
|
9
|
Kishan AU, Lee CC, Winer JA. Patterns of olivocochlear axonal branches. OPEN JOURNAL OF NEUROSCIENCE 2011; 1:2. [PMID: 22348198 PMCID: PMC3279734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The olivocochlear (OC) pathway is the source of major feedback control of ascending acoustic information. Two main patterns of axonal branching are evident at this and other levels of the auditory pathway: long-distance collaterals and branches involved in feedback-control loops. Only a minority of OC neurons project to both cochlea, consistent with a role for the system in sound localization. OC branches to the ventral cochlear nucleus provide the anatomical substrate for a feedback control loop that could aid in modulating the intensity of acoustic information being conveyed to higher cortical levels while still dampening the overall intensity of signaling from the cochlea itself.
Collapse
Affiliation(s)
| | - Charles C. Lee
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Jeffery A. Winer
- Division of Neurobiology, Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720
| |
Collapse
|