PSYC 1160 Study Guide - Final Guide: Absolute Threshold, Power Law, Mind Control

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Difference thresholds: sensory scaling, sensory adaptation, auditory perception, visual subliminal perception, extrasensory perception (esp) Sensation (cid:862)pro(cid:272)ess that dete(cid:272)ts sti(cid:373)uli fro(cid:373) our (cid:271)odies a(cid:374)d the e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t(cid:863) Perception (cid:862)pro(cid:272)ess that orga(cid:374)izes those se(cid:374)satio(cid:374)s i(cid:374)to (cid:373)ea(cid:374)i(cid:374)gful patter(cid:374)s(cid:863) - you can perceive or organize sounds as words and language. Stimulus energy (light, sound) sensory receptors (ears, eyes) neural impulses brain. Absolute threshold (car in fog, see a candle light 30 miles away, can hear a ticking clock 20 feet away, single drop of perfume can be detected in a house, single teaspoon of sugar in 2l of water) Jnd minimum amount of additional sugar to say your coffee is sweeter. Weber-fechner law- amount of change needed for a jnd is proportional to the original stimulus with ratios (1:50 weight, one pound added to 50lbs, you will be able to feel a difference. For 2:100, two pounds needed to identify the jnd on 100lbs) Relation between physical characteristics of a stimulus by examining reaction times.

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