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Sensation and Perception
7 cards·by brebensdorf
Absolute Threshold
A minimum amount of physical energy necessary to produce a sensation
Difference Threshold
The minimum difference between two stimuli that is detectable to an observer
Lock and Key theory
Holds that odors are related to the shapes of chemical molecules
Subliminal perception
perception of or reaction to a stimulus that occurs without awareness or consciousness
Rods
Visual receptors for dim light that produce only black and white sensations
Cones
Visual receptors for colors and daylight visual acuity
Perceptual expectancy
A readiness to perceive in a particular manner, induced by strong expectations