Class Notes (834,045)
Canada (508,293)
York University (35,141)
Psychology (4,108)
PSYC 1010 (1,345)
Lecture 19

Introduction to Psychology PSYCH1010 Lecture 19

4 Pages
Unlock Document

PSYC 1010
Rebecca Jubis

PSYCH1010 Lecture 19 3152012 112900 AM Sensation and PerceptionChapter 4 Sensation the process whereby our sensory organs gather info from the external world stimulation of the sensory organs Perception the process whereby the brain organizes and interprets these sensations so that they have some meaningPsychophysics the study of how physical stimuli are translated into psychological experienceHow much of a stimulus is necessary for you to detect it 1 Absolute Threshold the point at which a person can detect the lowest intensity of light or other sensation 50 of the time 2 Difference Threshold just noticeable difference JND is the smallest difference in stimulation required to discriminate one stimulus from another 50 of the time a Between the Reference stimulus and the b Difference Stimulus extra stimulus to detect stimulus i Webers LawPeople are able to perceive very small changes if the magnitude of the reference stimulus is small but as the magnitude of the reference stimulus increases a greater change is necessary before the difference is perceived 3 SignalDetection Theory proposes that the detection of stimuli is based on a The intensity of the stimulus b Noise any irrelevant and competing stimuli c Decision process or response criterion3 Types of Perceptual Organization 1 Form Perception how stimuli are organized into meaningful patterns on shapes 2 Depth or Distance Perception how we can see 3Dimensions when the retina only records only 2 3 Perceptual Constancies
More Less

Related notes for PSYC 1010

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.