論文

査読有り 国際誌
2019年11月5日

Interhemispherically dynamic representation of an eye movement-related activity in mouse frontal cortex.

eLife
  • Takashi R Sato
  • ,
  • Takahide Itokazu
  • ,
  • Hironobu Osaki
  • ,
  • Makoto Ohtake
  • ,
  • Tetsuya Yamamoto
  • ,
  • Kazuhiro Sohya
  • ,
  • Takakuni Maki
  • ,
  • Tatsuo K Sato

8
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7554/eLife.50855

Cortical plasticity is fundamental to motor recovery following cortical perturbation. However, it is still unclear how this plasticity is induced at a functional circuit level. Here, we investigated motor recovery and underlying neural plasticity upon optogenetic suppression of a cortical area for eye movement. Using a visually-guided eye movement task in mice, we suppressed a portion of the secondary motor cortex (MOs) that encodes contraversive eye movement. Optogenetic unilateral suppression severely impaired contraversive movement on the first day. However, on subsequent days the suppression became inefficient and capability for the movement was restored. Longitudinal two-photon calcium imaging revealed that the regained capability was accompanied by an increased number of neurons encoding for ipsiversive movement in the unsuppressed contralateral MOs. Additional suppression of the contralateral MOs impaired the recovered movement again, indicating a compensatory mechanism. Our findings demonstrate that repeated optogenetic suppression leads to functional recovery mediated by the contralateral hemisphere.

リンク情報
DOI
https://doi.org/10.7554/eLife.50855
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/31687930
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892611
ID情報
  • DOI : 10.7554/eLife.50855
  • PubMed ID : 31687930
  • PubMed Central 記事ID : PMC6892611

エクスポート
BibTeX RIS