Psychology 1000 Study Guide - Midterm Guide: Detection Theory, Absolute Threshold, Optic Nerve

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Leslie Janes

Document Summary

Sensation: the stimulus-detection process by which our sense organs respond to and translate environmental stimuli into nerve impulses that are sent to the brain. Perception: active process of organizing the stimulus input and giving it meaning. Stimulus detection: absolute threshold designated as the lowest intensity at which a stimulus can be detected 50% of the time. Vision: the human eye, light enters eye through cornea (transparent protective structure, pupil adjustable opening that dilates or constricts to control amount of light entering o. Amplitude vertical size of the sound waves (decibels db: transduction system of ear is made up of bones, membranes, and tubes, sound waves vibrate eardrum, which vibrates three bones (hammer, anvil, and stirrup) . Amplify sound waves more than thirty times: cochlea coiled, snail shaped tube that contain basilar membrane (sheet of tissue) o. Perceptions have organization and structure: synthesia stimuli in one sensory modality give rise to perceptions in other modalities .