PSYC 341 Chapter Notes - Chapter 3: Feature Integration Theory, Torsten Wiesel, George Sperling

• School: University of Maryland
• Department: Psychology
• Course: PSYC 341
• Professor: michaeldougherty

Document Summary

Perception: process of interpreting/understanding sensory information. Top down processing: interpreting with context, knowledge driven. Bottom up processing: constructing a representation from the pieces, construct whole from the parts, stimulus/environment driven. Basic units of visual perception: objects sensed when light patterns fall on retina, visual persistence: images exist beyond physical duration. Sensations persist briefly (1/2 to 3 secs) Input from keyboard/mouse buffer (holds data during input) ram (save going to hard drive) hard drive (going backwards is open) Full (all 12 items) versus partial report (only report 4 items and shown which row to report) Fixation (+) letter array (50ms) blank field delay (variable interval) cue tone report. P x total # of items = number of items available immediately. Channel capacity limited: 4. 5 letters if went to stm. Show a set of letters, circle appears where one had been positioned, observer sees matrix with eraser where the letter was presented.