PSY 105 Lecture Notes - Lecture 4: Set Theory, Poggendorff Illusion, Ames Room

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

Document Summary

The study of how physical stimuli are translated into psychological experience ie dress illusion. Sensation: detection of physical energy by the 5 senses. The process of converting an external stimulus into electrical signals within neurons. After being transduced, our brains then organize the sensory data into meaningful concepts. Perception: the brains interpretation of raw sensory data ie, red rose ( know its red because more familiar with red) But what counts as detectable depends on whom or what is doing the detecting. A dividing point between energy levels that do and do not have detectable effect. , automatic lights turn on when a threshold id reached. Absolute threshold: the stimulus intensity that can be detected 50% of the time. Just noticeable differences (jnd): the smallest diff in the amount of stimulation that a specific sense can detect. Weber"s law: size of jnd is proportional to size of initial stimulus intensity.