NBB 302 Chapter Notes - Chapter 2: Posterior Commissure, Anterior Commissure, Planum Temporale
13 Feb 2018
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Hemispheric lateralization: severing corpus callosum for individual to prevent epileptic seizures, but also prevents connection from left and right hemispheres, two halves of the brain function independently like two separate brains, have different functions. Can only see words flashed in the right side (going into left brain) Left has ability to interpret why he said bell: shown figure, asked if he sees potato or face. Image to r hemi -- points to face. Image to l hemi -- points to fruits. Synchronizing oscillatory activity in cortical neurons as object passes receptive fields. Loss of callosal axon does not cause cell death. Callosal size related to: #/diameter of axon, thickness of myelin, nonneural strx, volume of extracellular space. Sexually dimorphic (accelerated lang devo in f; better visuospatial tasks in m: cooperation/competition, rate of neural activity limiting factors: Rate at which individual neurons can fire is limited.
