Attention

Attention

1. Cortical Attention

2. Sub-cortical attention

   • The thalamus: The V1 connects to and from the perigeniculate nucleus. Top-down, the feedback from the visual cortex acts on the thalamus

3. Attention Disorders

   • Spatial Neglect
     • Vision is fine but cannot attend to one half of the visual field
   • Neuropsychological Tests of attention
     • Bisecting lines task
     • Eye-tracking: gaze bias
     • Test of extinction
     • Drawing of common objects
   • Bálint's syndrome
     • Simultaneous agnostic: The inability to perceive simultaneous events or objects in one's visual field
     • Oculomotor apraxia: The inability to voluntarily guide eye movements
     • Optic ataxia: The inability to guide the hand toward an object using visual information
   • Blindsight
     • Vision without awareness, damage to visual cortex, can still identify some visual attributes of stimulus reported as "Not seen"

Images and files in the map