PSYC10003 Chapter Notes - Chapter 4: Subliminal Stimuli, Absolute Threshold, Neural Adaptation
6 Apr 2019
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Sensation: the stimulation of sense organs, the sensory organs (ex. Eyes, ears, etc. ) absorb energy: the absolute threshold is the minimum stimulus intensity that an organism can detect. Detection is not absolute, but reduces gradually: the jnd, or the just noticeable difference, is the smallest difference in stimulus intensity that a specific sense can detect. Perception: the selection, organization, and interpretation of sensory input. This theory states that the detection of stimuli involves both decision processes and sensory processes: both of these processes are influenced by a variety of factors besides stimulus intensity. Subliminal perception: the registration of sensory input without conscious awareness. This has caused controversy when hidden messages have been placed in music and movies. There have been studies that support the existence of subliminal perception: subliminal inputs can cause measurable, although small, effects in subjects that did not consciously register the stimuli.
