PSY100H1 Chapter Notes - Chapter 4: Absolute Threshold, Psychophysics, Human Eye
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PSY100H1 Full Course Notes
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Ordinarily people rely on 3 types of cues to determine which way is up: People differ in terms of how they perceive 3d images. Sensation the stimulation of sense organs involves the absorption of energy such as light or sound waves by sensory organs such as the ears and eyes. Perception the selection, organization and interpretation of sensory input involves organizing and translating sensory input into something meaningful, such as your best friend"s face or other environmental stimuli. Psychophysics the study of how physical stimuli are translated into psychological experience. Sensation begins with a stimulus, any detectable input from the environment. Fechner wanted to know: for any given sense, what is the weakest detectable stimulus. Threshold: a dividing point between energy levels that do and do not have a detectable effect. Absolute threshold: for a specific type of sensory input is the minimum amount of stimulation that an organism can detect; stimulus intensity detected 50% of the time.
