Functional Architecture of Motion Direction in the Mouse Superior Colliculus.
Curr Biol
; 30(17): 3304-3315.e4, 2020 09 07.
Article
em En
| MEDLINE
| ID: mdl-32649907
ABSTRACT
Motion vision is important in guiding animal behavior. Both the retina and the visual cortex process object motion in largely unbiased fashion all directions are represented at all locations in the visual field. We investigate motion processing in the superior colliculus of the awake mouse by optically recording neural responses across both hemispheres. Within the retinotopic map, one finds large regions of â¼500 µm size where neurons prefer the same direction of motion. This preference is maintained in depth to â¼350 µm. The scale of these patches, â¼30 degrees of visual angle, is much coarser than the animal's visual resolution (â¼2 degrees). A global map of motion direction shows approximate symmetry between the left and right hemispheres and a net bias for upward-nasal motion in the upper visual field.
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MEDLINE
Assunto principal:
Córtex Visual
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Vias Visuais
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Campos Visuais
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Colículos Superiores
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Percepção de Movimento
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Neurônios
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article