TY  - JOUR
AU  - Ito, Junji
AU  - Joana, Cristian
AU  - Yamane, Yukako
AU  - Fujita, Ichiro
AU  - Tamura, Hiroshi
AU  - Mardonado, Pedro E
AU  - Grün, Sonja
TI  - Latency shortening with enhanced sparseness and responsiveness in V1 during active visual sensing
JO  - Scientific reports
VL  - 12
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - FZJ-2022-04224
SP  - 6021
PY  - 2022
AB  - In natural vision, neuronal responses to visual stimuli occur due to self-initiated eye movements. Here, we compare single-unit activity in the primary visual cortex (V1) of non-human primates to flashed natural scenes (passive vision condition) to when they freely explore the images by self-initiated eye movements (active vision condition). Active vision enhances the number of neurons responding, and the response latencies become shorter and less variable across neurons. The increased responsiveness and shortened latency during active vision were not explained by increased visual contrast. While the neuronal activities in all layers of V1 show enhanced responsiveness and shortened latency, a significant increase in lifetime sparseness during active vision is observed only in the supragranular layer. These findings demonstrate that the neuronal responses become more distinct in active vision than passive vision, interpreted as consequences of top-down predictive mechanisms.
LB  - PUB:(DE-HGF)16
C6  - 35410997
UR  - <Go to ISI:>//WOS:000781187500010
DO  - DOI:10.1038/s41598-022-09405-4
UR  - https://juser.fz-juelich.de/record/910874
ER  -