PS262 Study Guide - Midterm Guide: Extrastriate Body Area, Parahippocampal Gyrus, Parietal Lobe
Document Summary
An exploration of spatial organization 2016-06-20 6:21:00 am. Spatial organization: refers to the way stimuli at specific location in the environment are represented by activity at specific locations in the nervous system. The cortical magnification factor has been determined in the human cortex using a technique called brain imaging, which makes it possible to create pictures of the brain"s activity: pet scans, fmri scans. They also concluded the cortex is organized into orientation columns, with each column containing cells that respond best to a particular orientation. Hubel and wiesel also found that as they moved their electrode 1mm across the cortex, their electrode passed through orientation columns that represented the entire range of orientations; this 1mm dimension is the size of one location column. Working together, columns that cover the entire visual field have an effect called tiling. Ablation refers to the destruction or removal of tissue in the nervous tissue.
