PSYC55H3 Lecture Notes - Lecture 7: Visual Cortex, Retina, Receptive Field
Document Summary
We focus one of the many things. If we do not focus our atenion, we are overwhelmed with informaion (scatered brain, confused) Overt atenion: movement of eye when something grabbed your atenion; body movements/gestures are also signs of overt atenion. Covert atenion: do not have body movement; a cogniive shit to focus on a speciic simulus. Involuntary/ exogenous: ex. someone throws the ball at you; someone"s phone rings; someone calls your name. Subject ixates on the screen, and the cue will appear, and then disappear. There are valid/invalid trials cue is poining the right/wrong direcion. Neutral cue not giving any useful informaion. All of this happens in 800 m seconds. Cue can afect the speed of detecing the appearance of the target subjects are signiicantly slower/faster if cue is valid or invalid. When mulitasking, we oten cannot do both things very well compared to doing one thing at a ime.
