PSY100Y5 Chapter Notes - Chapter 4: Middle Ear, Darkroom, Night Vision

71 views12 pages
5 Apr 2011
School
Department
Course
Professor
laurine and 39848 others unlocked
PSY100Y5 Full Course Notes
13
PSY100Y5 Full Course Notes
Verified Note
13 documents

Document Summary

Psychophysics study of how physical stimuli are translated into psychological experience. Perception is the selection, organization, and interpretation of sensory input. Just noticeable difference (jnd) the smallest difference in the amount of stimulation that a specific sense can detect. Absolute threshold is simply the jnd from nothing: weber"s law: states that the size of jnd is a constant proportion of the size of the initial stimulus. The constant proportion is called the weber fraction: weber fraction for weights: 1/30. This means you can only tell the difference between 300 grams and 310 grams, not 300 grams and 305 grams. Second light bulb you notice a small difference. Third one you hardly notice anything different: perception can"t be measured on absolute scales. Signal-detection theory: signal-detection theory the detection of stimuli involves decision processes as well as sensory processes, which are both influenced by a variety of factors besides stimulus intensity, hits detecting signals when present.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions