PSY100Y5 Lecture Notes - Sensory Neuron, Absolute Threshold, Color Vision
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PSY100Y5 Full Course Notes
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Document Summary
Sensation is the stimulation of sense organs. Perception is the selection, organization, and interpretation of sensory input. Inherently subjective and unique to each of us. Begins with the selection of information that we take from the environment; we can only take in a very small amount of information. Thresholds > the amount of of energy necessary for us to be able to detect or be able to sense something. Sensory receptors are tuned to a particular form of energy. Auditory receptors in the ear code for sound pressure changes, not for light. Sensory systems require a minimum amount of energy for activation (absolute threshold; minimum amount of energy to activate our perception 50% of the time) - we can sense things at levels below our conscious awareness. Just noticeable differences (jnd): the minimum difference in stimulation that is just noticeable. How much energy is necessary for you to notice a difference in the stimulus.
