PSY 252 Study Guide - Comprehensive Final Exam Guide - Visual System, Receptive Field, Visual Cortex
Document Summary
Psychophysics a (cid:271)old (cid:373)ethod a(cid:374)d ho(cid:449) ps(cid:455)(cid:272)hologists (cid:395)ua(cid:374)tif(cid:455) people(cid:859)s pe(cid:396)(cid:272)eptual se(cid:374)siti(cid:448)ities. Not only used in psychology, everything you do in everyday life is a psychophysical task. Testing hearing (wants to know how well you detect theses sounds) Psychophysical tasks is anything that involves your senses. All started with gustav fechner who was a physicist who focused on the mind and perception. Wanted to apply math to how the brain works. The psychophysical question: what is relation between sensation intensity (how bright, how hard, etc. ) and stimulus intensity (ex. Absolute threshold: point where you have problems seeing it even though the stimulus is present. Difference threshold: when you can register a change in the sensation (ex. Wanted to know at what levels we perceive things. Wanted to mathematically measure senses and so did things like this chart where is was notices as sensation intensity increases so does the other thing. Examples of the three major problems in psychophysics:
