PSY393H5 Lecture Notes - Lecture 6: Posterior Parietal Cortex, Intraparietal Sulcus, Parietal Lobe
Document Summary
Divisions process and integrate somatosensory and visual information. Saccade: involuntary, abrupt, and rapid small movements when changing fixation point. Kravitz: three dorsal streams pathways (from posterior parietal cortex) To motor regions: sensory information about limb position and movement. Integration sector; feedback loop that receives input from sensory or parietal areas. Small visual input from pg synchronized, cell assemblies go down the same pathways, Spatially guided behaviour with visual and tactile info. Posterior zones: integrate info from vision with somatosensory info from movement and spatial function. Especially related to object rotation and navigation through space. Parietal lobe important for all of these functions: Ppc frontal eye field (motor frontal lobe for the eyes) Ppc (pgpf) receives combo of sensory, motivational, and related motor input. Discharge is enhanced when animal attends to a target or moves toward it. Neural calculations of relative position of the body wrt sensory feedback from movements being made and planned.
