CAS PS 222 Study Guide - Midterm Guide: Ocular Dominance Column, Binocular Disparity, Simple Cell

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 222
• Professor: Andrea Mercurio

Document Summary

All photoreceptors do is give us information about darkness and lightness. Thanks to this, we can detect light/dark boundaries. The size of the rgcs" rfs vary across the retina: high resolution in the fovea and high sensitivity in the periphery. Next, we go into the lgn, which integrates information from both eyes, accentuates boundaries, and maintains retinotopic organization. We need to start building shapes we need more information about shape, form, depth and motion. Cells in v1 are most stimulated by bars or edges within a narrow range of orientations. This begins to tell us what objects are. In fact, we begin to recognize objects by their shape which is de ned by the position and orientation of its edges. We get an electrode in the cell and we measure its response to a stimulus. In this case, we show bars of light with different orientation and we see a difference in responses.