PSY 1101 Chapter Notes - Chapter 6: Hermann Von Helmholtz, Subliminal Stimuli, Color Vision

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

Sensation: detects areas of light, dark and color on this slide. Perception: e(cid:374)so(cid:396)(cid:455) a(cid:374)d pe(cid:396)(cid:272)eptual p(cid:396)o(cid:272)ess help us so(cid:396)t out (cid:449)hat(cid:859)s goi(cid:374)g o(cid:374) i(cid:374) a (cid:272)o(cid:373)ple(cid:454) figure. Bottom-up: sensory receptor relay information to brain; brain interprets information. Top-down: previous expectations affect the detection and analysis of information from the senses. Psychophysics: methods that measure the strength of a stimulus a(cid:374)d the o(cid:271)se(cid:396)(cid:448)e(cid:396)(cid:859)s se(cid:374)siti(cid:448)it(cid:455) to it. Tells us what senses our body can physically detect; Absolute: a stimulus detected 50% of the time, sub-liminal (below threshold, minimum stimulus required. Relative: two different stimulus detected 50% of the time. ** we(cid:271)er"s law: for a difference to be perceptible, two stimuli must differ by a constant proportion, rather than by a constant amount. Yes, (cid:271)ut: there"s a differe(cid:374)(cid:272)e (cid:271)et(cid:449)ee(cid:374) (cid:862)(cid:374)ot se(cid:374)si(cid:374)g(cid:863) a(cid:374)d (cid:862)(cid:374)ot paying attention(cid:863). Lots of our behavior can be driven by things we (cid:272)an"t or won"t pay attention to.