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Clayton KK, Williamson RS, Hancock KE, Tasaka GI, Mizrahi A, Hackett T, Polley DB. Auditory Corticothalamic Neurons Are Recruited by Motor Preparatory Inputs. Curr Biol 2021; 31:310-321.e5. [PMID: 33157020 PMCID: PMC7855066 DOI: 10.1016/j.cub.2020.10.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 12/22/2022]
Abstract
Corticothalamic (CT) neurons comprise the largest component of the descending sensory corticofugal pathway, but their contributions to brain function and behavior remain an unsolved mystery. To address the hypothesis that layer 6 (L6) CTs may be activated by extra-sensory inputs prior to anticipated sounds, we performed optogenetically targeted single-unit recordings and two-photon imaging of Ntsr1-Cre+ L6 CT neurons in the primary auditory cortex (A1) while mice were engaged in an active listening task. We found that L6 CTs and other L6 units began spiking hundreds of milliseconds prior to orofacial movements linked to sound presentation and reward, but not to other movements such as locomotion, which were not linked to an explicit behavioral task. Rabies tracing of monosynaptic inputs to A1 L6 CT neurons revealed a narrow strip of cholinergic and non-cholinergic projection neurons in the external globus pallidus, suggesting a potential source of motor-related input. These findings identify new pathways and local circuits for motor modulation of sound processing and suggest a new role for CT neurons in active sensing.
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Affiliation(s)
- Kameron K. Clayton
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston MA 02114 USA
| | - Ross S. Williamson
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston MA 02114 USA
- Dept. Otolaryngology, Harvard Medical School, Boston MA 02114 US
| | - Kenneth E. Hancock
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston MA 02114 USA
- Dept. Otolaryngology, Harvard Medical School, Boston MA 02114 US
| | - Gen-ichi Tasaka
- The Edmond and Lily Safra Center for Brain Sciences, Dept. Neurobiology, Hebrew University of Jerusalem, Jerusalem ISR
| | - Adi Mizrahi
- The Edmond and Lily Safra Center for Brain Sciences, Dept. Neurobiology, Hebrew University of Jerusalem, Jerusalem ISR
| | - Troy Hackett
- Dept. Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville TN, 37203 USA
| | - Daniel B Polley
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston MA 02114 USA
- Dept. Otolaryngology, Harvard Medical School, Boston MA 02114 US
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Dudai A, Yayon N, Lerner V, Tasaka GI, Deitcher Y, Gorfine K, Niederhoffer N, Mizrahi A, Soreq H, London M. Barrel cortex VIP/ChAT interneurons suppress sensory responses in vivo. PLoS Biol 2020; 18:e3000613. [PMID: 32027647 PMCID: PMC7029879 DOI: 10.1371/journal.pbio.3000613] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/19/2020] [Accepted: 01/16/2020] [Indexed: 02/06/2023] Open
Abstract
Cortical interneurons expressing vasoactive intestinal polypeptide (VIP) and choline acetyltransferase (ChAT) are sparsely distributed throughout the neocortex, constituting only 0.5% of its neuronal population. The co-expression of VIP and ChAT suggests that these VIP/ChAT interneurons (VChIs) can release both γ-aminobutyric acid (GABA) and acetylcholine (ACh). In vitro physiological studies quantified the response properties and local connectivity patterns of the VChIs; however, the function of VChIs has not been explored in vivo. To study the role of VChIs in cortical network dynamics and their long-range connectivity pattern, we used in vivo electrophysiology and rabies virus tracing in the barrel cortex of mice. We found that VChIs have a low spontaneous spiking rate (approximately 1 spike/s) in the barrel cortex of anesthetized mice; nevertheless, they responded with higher fidelity to whisker stimulation than the neighboring layer 2/3 pyramidal neurons (Pyrs). Analysis of long-range inputs to VChIs with monosynaptic rabies virus tracing revealed that direct thalamic projections are a significant input source to these cells. Optogenetic activation of VChIs in the barrel cortex of awake mice suppresses the sensory responses of excitatory neurons in intermediate amplitudes of whisker deflections while increasing the evoked spike latency. The effect of VChI activation on the response was similar for both high-whisking (HW) and low-whisking (LW) conditions. Our findings demonstrate that, despite their sparsity, VChIs can effectively modulate sensory processing in the cortical microcircuit.
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Affiliation(s)
- Amir Dudai
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Nadav Yayon
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Biological Chemistry, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Vitaly Lerner
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Gen-ichi Tasaka
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yair Deitcher
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Karin Gorfine
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Naomi Niederhoffer
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Biological Chemistry, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Adi Mizrahi
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hermona Soreq
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Biological Chemistry, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Michael London
- The Edmond and Lily Safra Center for Brain Sciences (ELSC) and The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
- * E-mail:
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Tasaka G, Oinuma I, Negishi M. Lamellipodin, a novel effector of M-Ras, regulates dendrite development by reconstructing actin network. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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