PSY 105 Chapter Notes - Chapter 4: Endorphins, Hair Cell, Periaqueductal Gray

• School: Ryerson University
• Department: Psychology
• Course: PSY 105
• Professor: Kristin Vickers

Document Summary

Synesthesia - the perceptual experience of one sense that is evoked by another sense. For some synesthetes, musical notes evoke the visual sensation of color. Others see printed letters or numbers in specific consistent colors. For those who don"t experience synethesia, the prospect of tasting sound or hearing color may seem unbelievable or the product of some hallucinogenic experience. Sensation - simple awareness due to the stimulation of a sense organ. Gustav fechner- develop an approach to measure sensation and perception called psychophysics. Psychophysics - methods that measure the strength of a stimulus and the observers sensitivity to the stimulus. Investigators typically define the absolute threshold as the loudness required for the listener to say she or he has heard the tone on 50% of the trials. In short, the human perceptual system excels at detecting changes in stimulation rather than the simple onset or offset of stimulation.