PSY 201 Lecture Notes - Lecture 10: Stereoscope, Lisa Lopes, Psychophysics

• School: University of Oregon
• Department: Psychology
• Course: PSY 201
• Professor: Magaret Sereno

Document Summary

Function of opponent cells is to enhance the ability to distinguish between different wavelengths. Perception: the ability to organize, re-organize, and make sense of the world from the sensory input. Perceptual processes extract information from the arrangement of individual stimulus elements in space and time. Psychophysics: the study of the relationships between physical stimuli & psychological responses. Ex. how dim a light can be detected. Absolute threshold: smallest amount of stimulus energy that can be detected. Intensity of a stimulus that is sufficient for detection 50% of the time. Difference threshold: smallest difference in stimulus energy that can be discriminated between two stimuli. Present standard stimulus (always the same intensity) and comparison stimulus (different intensities) The size of the difference which can be detected 50% of the time. The jdn is smaller for less intense standard stimuli and larger for more intense stimuli. Gestalt psychology: describes various ways our perceptual system tends to organize or group elements into whole objects.