Bibliographic Details
| Title: |
Tangential distribution of cell type and direction selectivity in monkey area MT |
| Authors: |
DIOGO, ANTONIA CINIRA M., LIMA, BRUSS, SOARES, JULIANA G. M., GATTASS, RICARDO |
| Source: |
Anais da Academia Brasileira de Ciências. January 2020 92(2) |
| Publisher Information: |
Academia Brasileira de Ciências, 2020. |
| Publication Year: |
2020 |
| Subject Terms: |
cell types, direction selectivity, orientation selectivity, extrastriate cortex, visual system, primates |
| More Details: |
Abstract: We studied the multiunit responses to moving and static stimuli from 585 cell clusters in area MT using multi-electrode arrays. Our aim was to explore if MT columns exhibit any larger-scale tangential organization or clustering based on their response properties. Neurons showing both motion and orientation selectivity were classified into four categories: 1- Type I (orientation selectivity orthogonal to the axis of motion); 2- Type II (orientation selectivity coaxial to the axis of motion); 3- Type DS (significant response to moving stimuli, but non-significant response to static stimuli); and 4- Type OS (significant orientation selectivity, but non-significant direction selectivity). Type I (34%), Type II (24%) and Type DS (32%) clusters were the most predominant and may be associated with different stages of motion processing in MT. On the other hand, the rarer Type OS (9%) may be integrating motion and form processing. Type I and unidirectional sites were the only classes to exhibit significant clustering. Type OS sites showed a trend for clustering, which did not reach statistical significance. We also found a trend for unidirectional sites to have bidirectional sites as neighbors. In conclusion, neuronal clustering associated with these four categories may be related to distinct MT functional circuits. |
| Document Type: |
article |
| File Description: |
text/html |
| Language: |
English |
| ISSN: |
0001-3765 |
| DOI: |
10.1590/0001-3765202020190564 |
| Access URL: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000300711 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edssci.S0001.37652020000300711 |
| Database: |
SciELO |
