Examlex
Describe the levels of organization from chemical to system.
Absolute Threshold
The minimum intensity of a stimulus that one can perceive, marking the boundary between non-detection and detection of a stimulus.
Weber's Law
A principle in psychology that states the smallest change in a stimulus, such as weight or brightness, that can be detected is a constant proportion of the stimulus level.
Absolute Threshold
The minimum stimulus intensity required to detect a stimulus at least half the time.
Sensory Adaptation
The mechanism by which sensory receptors reduce their sensitivity to sustained stimuli as time progresses.
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