Psychology 1000 Study Guide - Midterm Guide: Taste Bud, Hair Cell, Taste

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas

Document Summary

Sensation the stimulus-detection process by which our sense organs respond to. &translate environmental stimuli into nerve impulses that are sent to the brain. Perception active process of organizing the stimulus input and giving it meaning: making sense of what our senses tell us, heavily influenced by context. Psychophysics the study of the relation between physical stimulus &physiological response o. Stimulus detection absolute threshold designated as the lowest intensity at which a stimulus can be detected 50% of the time: absolute threshold lowest intensity at which a stimulus can be detected 50% of the time. Signal detection theory concerned with situational factors that can influence sensory judgments: decision criterion standard of how certain a person must be that a stimulus is present before they will say they detect it o. Increased rewards for noticing stimuli often results in lower detection thresholds. When the perception is more important, people have lower absolute thresholds. Increased danger/punishment for noticing stimuli often raises detection threshold.