Attentional modulation along the ventral pathway of the cortical visual system of primates consists in enhanced representation of the retinal input at a specific location in space, or of objects located anywhere in the visual field which possess a critical feature. Crucially, selective attention mechanisms also allow the visual system to resolve competition among multiple objects in a cluttered scene in favor of the one that is relevant for the current behavior. Finally, selective attention affects both the spontaneous activity of neurons as well as their visually driven activity, and it does so not only by modulating the rate of firing of individual neurons, but also by modulating the degree of synchronized firing within the critical neuronal populations.

Attentional mechanisms in ventral pathway

CHELAZZI, Leonardo;DELLA LIBERA, Chiara;SANTANDREA, Elisa
2009-01-01

Abstract

Attentional modulation along the ventral pathway of the cortical visual system of primates consists in enhanced representation of the retinal input at a specific location in space, or of objects located anywhere in the visual field which possess a critical feature. Crucially, selective attention mechanisms also allow the visual system to resolve competition among multiple objects in a cluttered scene in favor of the one that is relevant for the current behavior. Finally, selective attention affects both the spontaneous activity of neurons as well as their visually driven activity, and it does so not only by modulating the rate of firing of individual neurons, but also by modulating the degree of synchronized firing within the critical neuronal populations.
2009
9780080446172
Area V4; Bottom-up; Inferotemporal (IT) cortex; Macaque monkey; Neurophysiology; Object vision; Salience; Top-down; Ventral pathway; Visual selective attention
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/312208
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