|
Visual perception from glance to glance| old_uid | 123 |
|---|
| title | Visual perception from glance to glance |
|---|
| start_date | 2005/10/31 |
|---|
| schedule | 11h-13h |
|---|
| online | no |
|---|
| details | Invité par J. Kevin O'Regan (Équipe Perception visuelle) |
|---|
| summary | During natural viewing, the eye samples the visual environment using a series of jerking, saccadic eye movements, separated by periods of fixation. This raises the fundamental question of how information from separate fixations is integrated into a single, coherent percept. I will discuss two "tricks" that the brain might use to generate our stable and continuous perception of the world. First, information about attended objects may be integrated across separate glances. To evaluate this possibility, I will present and discuss data showing the transsaccadic temporal integration of motion and form. I will discuss the potential role of the re-mapping of receptive fields around the time of saccades in transsaccadic perception and in the phenomenon of saccadic mislocalization. Second, information about multiple objects in a natural scene may build up across separate glances in a scene-based memory. The combination of saccadic re-mapping, occurring on a timescale of milliseconds, and scene memory, operating over a span of several minutes, may underlie the subjective impression of a stable visual world |
|---|
| responsibles | Cohen |
|---|
| |
|