PSY 102 Study Guide - Final Guide: Occipital Lobe, Phi Phenomenon, Neural Adaptation
9 Apr 2015
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Illusion: the way you perceive the stimulus doesn"t match the physical reality. Sensation: detection of physical energy by the sense organs. Allows us to pick up signals from environment. Perception: the brain"s interpretation of raw sensory inputs. Allows us to assemble signals into something meaningful. All our senses rely on a handful of principles. Transduction: process where the external stimulus is converted by a sense receptor into neural activity. Activation is highest when stimulus is first detected, then sensory adaptation occurs (response declines in strength) Psychophysics: study of how we perceive sensory stimuli based on their physical characteristics. Absolute threshold is the lowest level of a stimulus we can detect 50% of the time. Just noticeable difference: the smallest amount of stimulus change humans can detect. Relevant to our ability to distinguish stronger from weaker stimulus. Weber"s law: the stronger the stimulus, the greater the change needed to detect ex.
