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Bottlenecks and belief states: what the mibrain tells us about attention| old_uid | 13520 |
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| title | Bottlenecks and belief states: what the mibrain tells us about attention |
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| start_date | 2014/02/28 |
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| schedule | 11h |
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| online | no |
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| location_info | Auditorium |
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| details | Séminaire Axe IV - Cognition, émotion, action |
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| summary | The bottleneck for attention is believed to comprise a network of areas in the cerebral cortex, with frontal and parietal cortex regulating limited resources available in the sensory areas of cortex. However, subcortical structures like the superior colliculus also play a role in attention, and in this talk I will explain how our investigation of the superior colliculus has led us to a very different view of the attention bottleneck. I will present evidence that the superior colliculus plays a crucial role in the control of spatial attention, but surprisingly, the mechanisms used by the superior colliculus appear to be independent of the well-known signatures of spatial attention in visual cortex. These recent results demonstrate that processes beyond the well- known correlates in extrastriate cortex play a major role in visual spatial attention. Furthermore, based on clues from neuroanatomy and disorders of attention, I speculate that these processes involve circuits through the basal ganglia and that the attention bottleneck arises from the need to establish a belief state about the current behavioral context. |
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| responsibles | Agid |
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