PSYC 2003H Chapter Notes - Chapter 4: Absolute Threshold, Psychophysics

• School: University of Arkansas
• Department: Psychology
• Course: PSYC 2003H
• Professor: Denise Beike

Document Summary

Perception: organization, identification, and interpretation of a sensation in order to form a mental representation. Transduction: many sensors in the body convert physical signals from the environment into encoded neural signals sent to cns. Gustav feschner (1801-1887): new approach to measuring sensation and perception. Psychophysics: methods that measure the strength of a stimulus and the observers sensitivity to it. Begin measuring process with a single sensory signal. Absolute threshold: the minimal intensity needed to just barely detect a stimulus in 50% of the trials. Just noticeable difference (jnd): the minimal change in a stimulus that can just barely be detected.