NROC64H3 Chapter Notes - Chapter 21: Receptive Field, Gaba Receptor Antagonist, Robert Desimone
Document Summary
Introduction: attention: state of selectively processing simultaneous sources of information. Has to do with preferential processing of sensory information. 5-10% of all school aged children worldwide. Non genetic factors: brain damage, pre mature birth. D4 and d2 dopamine receptor gene and dopamine transporter gene. Ritalin: mild central nervous system stimulant, increases dopamine effect. Behavioural consequences of attention: we place object on fovea, can pay attention to something on retina outside fovea. Enhanced detection: experiment: cue stimulus at fixation point, half trials small target flashed left or right after delay period. Cue: plus sign (equally likely target left or right), arrow (4x more likely it would appear on side arrow points to) Had valid and invalid cues with arrows (valid 4x more likely than unlikely) There was a covert switch in attention without moving the eyes that made valid cues more detected than neutral and invalid cues less detected than neutral.
