RRC ID 70573
著者 Böhm UL, Kimura Y, Kawashima T, Ahrens MB, Higashijima SI, Engert F, Cohen AE.
タイトル Voltage imaging identifies spinal circuits that modulate locomotor adaptation in zebrafish.
ジャーナル Neuron
Abstract Motor systems must continuously adapt their output to maintain a desired trajectory. While the spinal circuits underlying rhythmic locomotion are well described, little is known about how the network modulates its output strength. A major challenge has been the difficulty of recording from spinal neurons during behavior. Here, we use voltage imaging to map the membrane potential of large populations of glutamatergic neurons throughout the spinal cord of the larval zebrafish during fictive swimming in a virtual environment. We characterized a previously undescribed subpopulation of tonic-spiking ventral V3 neurons whose spike rate correlated with swimming strength and bout length. Optogenetic activation of V3 neurons led to stronger swimming and longer bouts but did not affect tail beat frequency. Genetic ablation of V3 neurons led to reduced locomotor adaptation. The power of voltage imaging allowed us to identify V3 neurons as a critical driver of locomotor adaptation in zebrafish.
巻・号 110(7)
ページ 1211-1222.e4
公開日 2022-4-6
DOI 10.1016/j.neuron.2022.01.001
PII S0896-6273(22)00001-0
PMID 35104451
PMC PMC8989672
MeSH Animals Locomotion / physiology Motor Neurons* / physiology Spinal Cord / physiology Swimming Zebrafish* / physiology
IF 14.415
リソース情報
ゼブラフィッシュ Tg(vglut2a:Gal4) Tg(vglut2a:loxP-DsRed-loxP-ChR-GFP) Tg(nkx2.2b:Cre-mCherry-NLS) Tg(sim1a:loxP-DsRed-loxP-DTA) Tg(hoxa4a/9a:Cre)