RRC ID |
64876
|
著者 |
Kato R, Hayashi T, Onoe K, Yoshida M, Tsukada H, Onoe H, Isa T, Ikeda T.
|
タイトル |
The posterior parietal cortex contributes to visuomotor processing for saccades in blindsight macaques.
|
ジャーナル |
Commun Biol
|
Abstract |
Patients with damage to the primary visual cortex (V1) lose visual awareness, yet retain the ability to perform visuomotor tasks, which is called "blindsight." To understand the neural mechanisms underlying this residual visuomotor function, we studied a non-human primate model of blindsight with a unilateral lesion of V1 using various oculomotor tasks. Functional brain imaging by positron emission tomography showed a significant change after V1 lesion in saccade-related visuomotor activity in the intraparietal sulcus area in the ipsi- and contralesional posterior parietal cortex. Single unit recordings in the lateral bank of the intraparietal sulcus (lbIPS) showed visual responses to targets in the contralateral visual field on both hemispheres. Injection of muscimol into the ipsi- or contralesional lbIPSs significantly impaired saccades to targets in the V1 lesion-affected visual field, differently from previous reports in intact animals. These results indicate that the bilateral lbIPSs contribute to visuomotor function in blindsight.
|
巻・号 |
4(1)
|
ページ |
278
|
公開日 |
2021-3-4
|
DOI |
10.1038/s42003-021-01804-z
|
PII |
10.1038/s42003-021-01804-z
|
PMID |
33664430
|
PMC |
PMC7933420
|
MeSH |
Animals
Behavior, Animal*
Blindness / diagnostic imaging
Blindness / physiopathology*
Blindness / psychology
Brain Mapping
Disease Models, Animal
Evoked Potentials, Visual
Female
Macaca
Male
Positron-Emission Tomography
Saccades*
Vision, Ocular*
Visual Cortex / diagnostic imaging
Visual Cortex / injuries
Visual Cortex / physiopathology*
Visual Fields
Visual Perception*
|
IF |
4.165
|
リソース情報 |
ニホンザル |
|