PS263 Lecture Notes - Lecture 3: Anterior Commissure, Corpus Callosum, Occipital Lobe
Document Summary
Neurons in different hemispheres communicate two bundles of axons: corpus callosum, anterior commissure. Cells organized in columns perpendicular to laminae, with each column cells having similar properties. Damage = cortical blindness (no experience) in related part of visual cortex. Tumor = simple sensations such as light flashes. The parietal lobe lies between occipital lobe and central sulcus (groove) Body sensation and monitors all info about eyes, head and body position. Postcentral gyrus: a. k. a primary somatosensory cortex, posterior to central sulcus, receives sensation from touch receptors, muscle stretch receptors, and joint receptors, 4 bands of cells parallel to central sulcus, light-touch (2, deep-pressure (1, combo of both (1) The temporal lobe lateral portion of each hemisphere (near temples) Auditory information and contributes to vision (movement perception and recognizing faces) left side essential for understanding spoken language. Tumor = elaborate auditory or visual hallucinations important for emotional and motivational behavior: damage = kl ver-bucy syndrome.
