Beyond onsets: object persistence along the visual pathway
Event details
| Date | 15.02.2017 |
| Hour | 11:00 › 12:00 |
| Speaker | Prof. Leon Y. Deouell, Hebrew University of Jerusalem, Israel. |
| Location | |
| Category | Conferences - Seminars |
The world is mostly stable, yet what we know about the neural basis of visual perception is limited to responses to change and onset responses. To start filling this gap we recorded intracranial electrocorticographic activity from patients presented with visual stimuli of variable durations to address the neural basis of visual sustained perception. Sustained cortical activity tracking the duration of the stimulus (broadband gamma; >30 Hz), was prominent in early visual cortex and decreased gradually along the ventral stream. In category selective areas on the inferior temporal cortex, activity in posterior electrodes tracked the stimulus duration while in anterior sites it did not. The results show that analog information about stimulus duration in the ventral stream follows a posterior-anterior gradient, and suggest functional differentiation within category-selective regions based on temporal response properties. The results highlight the fact that full understanding of perception goes beyond onset responses.
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Practical information
- Informed public
- Free
Organizer
- Prof Dimitri Van De Ville