Neural correlates of vocal initiation in the VTA/SNc of juvenile male zebra finches
© 2021. The Author(s)..
Initiation and execution of complex learned vocalizations such as human speech and birdsong depend on multiple brain circuits. In songbirds, neurons in the motor cortices and basal ganglia circuitry exhibit preparatory activity before initiation of song, and that activity is thought to play an important role in successful song performance. However, it remains unknown where a start signal for song is represented in the brain and how such a signal would lead to appropriate vocal initiation. To test whether neurons in the midbrain ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) show activity related to song initiation, we carried out extracellular recordings of VTA/SNc single units in singing juvenile male zebra finches. We found that a subset of VTA/SNc units exhibit phasic activity precisely time-locked to the onset of the song bout, and that the activity occurred specifically at the beginning of song. These findings suggest that phasic activity in the VTA/SNc represents a start signal that triggers song vocalization.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:11 |
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| Enthalten in: |
Scientific reports - 11(2021), 1 vom: 17. Nov., Seite 22388 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yanagihara, Shin [VerfasserIn] |
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| Anmerkungen: |
Date Completed 31.01.2022 Date Revised 19.04.2022 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1038/s41598-021-01955-3 |
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| Förderinstitution / Projekttitel: |
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NLM333274865 |
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| 245 | 1 | 0 | |a Neural correlates of vocal initiation in the VTA/SNc of juvenile male zebra finches |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2021. The Author(s). | ||
| 520 | |a Initiation and execution of complex learned vocalizations such as human speech and birdsong depend on multiple brain circuits. In songbirds, neurons in the motor cortices and basal ganglia circuitry exhibit preparatory activity before initiation of song, and that activity is thought to play an important role in successful song performance. However, it remains unknown where a start signal for song is represented in the brain and how such a signal would lead to appropriate vocal initiation. To test whether neurons in the midbrain ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) show activity related to song initiation, we carried out extracellular recordings of VTA/SNc single units in singing juvenile male zebra finches. We found that a subset of VTA/SNc units exhibit phasic activity precisely time-locked to the onset of the song bout, and that the activity occurred specifically at the beginning of song. These findings suggest that phasic activity in the VTA/SNc represents a start signal that triggers song vocalization | ||
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| 700 | 1 | |a Ikebuchi, Maki |e verfasserin |4 aut | |
| 700 | 1 | |a Mori, Chihiro |e verfasserin |4 aut | |
| 700 | 1 | |a Tachibana, Ryosuke O |e verfasserin |4 aut | |
| 700 | 1 | |a Okanoya, Kazuo |e verfasserin |4 aut | |
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