PSY 105 Lecture Notes - Lecture 4: Starbucks, Phosphene, Gestalt Psychology

• School: Ryerson University
• Department: Psychology
• Course: PSY 105
• Professor: William Huggon

Document Summary

Lecture 04 psychophysics and illusions sensation and perception. The study of how physical stimuli are translated into psychological experience. Sensation: detection of physical energy by the sense organs. 5 sense: sight, hearing, taste, smell, and touch. Perception: the brain"s interpretation of raw sensory data. The process of converting an external stimulus into electrical ingots within neurons. After being transducer, our brains then organize the sensory data into meaningful concepts. The concept of the threshold a dividing point between energy levels that do and do not have a detectable effect. Example automatic lights turn on when a threshold is reached. Absolute threshold the stimulus intensity that can be detected 50% of the time (eg. The smallest difference in the amount of stimulation that a speci c sense can detect: weber"s law. Size of jnd is proportional to size of initial stimulus intensity.