PSYC51H3 Chapter Notes - Chapter 9: Visual Cortex, Electric Spark, Prefrontal Cortex
Document Summary
This aspect of visually guided behavior is broadly referred to as selective visual attention. In the visual modality, a useful starting point is the division of selective attention into three dichotomies. The first of these is top-down versus bottom-up selective attention. The second distinguishes spatially directed selective attention from attention directed toward particular classes of visual features or objects. The third dichotomy distinguishes between the selective processing of stimuli in the absence of any orienting movements (covert attention) from that which occurs in conjunction with orienting movements (e. g. , eye movements, reaching, or grasping). V1 neurons, those neurons were more likely to be activated by dlgn stimulation: these results provide a direct approach for testing how attention alters the transmission of signals across stages of the visual system. V4 neurons was sufficient to modulate visually driven responses, even when saccade planning was spatially dissociated from the direction of covert attention.
