PSYCH 1XX3 Lecture Notes - Lecture 5: Action Potential, Motor Coordination, Transcranial Magnetic Stimulation
Document Summary
Humans rely more on vision than any other sense. Although it begins with light gathering in the eye, visual processing of course, occurs in the brain. In this class, we explore the assumptions made by the brain and the development of 2 separate visual pathways. Plasticity in visual processing allows for development and adaption. Ability to alter motor coordination as bodies grow, age, and learn new skills. Visual shift results from adaption of signals coordinating visual and motor systems. Behavioral tests confirm a lack of attention, rather than a visual deficit. Recall of memories reveal a bias to ignore half of the world. Hemi spatial neglect typically follows damage to right parietal lobe only. The blind spot is filled in by the context. Attention is a dialogue between bottom-up and top-down processing. Information is compressed as it moves to v1. Blindsight functions by subconscious activity in secondary visual pathway.
