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AP Psychology Sensation and Perception
Terms in this set (42)
After constant exposure to a stimulus, our nerve cells fire less frequently. This can be explained by which term?
The ability of the human visual system to barely detect a candle flame at a distance of about 30 miles on a clear, dark night is an example of?
Gate control theory
The nervous system blocks or allows pain signals to pass to the brain.
The process of receiving and representing stimulus energies through the nervous system is
Most of the participants who viewed a videotape of men tossing a basketball remained unaware of an umbrella-toting woman sauntering across the screen.
signal detection theory
Emphasizes that personal expectations and motivations influence the level of absolute thresholds.
Audiotapes of soothing ocean sounds accompanied by faint and imperceptible verbal messages designed to increase a desire to lose weight best illustrate this term.
The principle that two stimuli must differ by a constant proportion for their difference to be perceived is known as
Emphasized the whole may exceed the sum of its parts.
The perceptual tendency to group together stimuli that are near each other.
This is a binocular cue for perception of distance.
Sensing the position and movement of individual body parts is an example of this sense.
A disruption in this sense would result in dizziness and a loss of balance.
The transparent, protective layer of the eye that light passes through.
The notion that pitch is related to the number of impulses traveling up the auditory nerve in a unit of time.
The organization of two dimensional retinal images into three dimensional perceptions.
As we move, objects that are fixed in place, a light pole, for example, may appear to move. What is this monocular cue for depth called?
Objects are brought into focus on the retina by changes in the curvature and thickness of this part of the eye.
the focusing of conscious awareness on a particular stimulus, as in the cocktail party effect
when people fail to detect changes to the visual details of a scene
The amplitude of electromagnetic waves determines the ________ of light.
The amount of light entering the eye is regulated by this part of the eye.
the process by which the eye's lens changes shape to focus near or far objects on the retina
rods and cones
in the retina, receives images that have passed through the lens of the eye
The receptor cells which most directly enable us to distinguish different wavelengths of light.
Young-Helmholtz trichromatic theory
the theory that the retina contains three different color receptors—one most sensitive to red, one to green, one to blue—which, when stimulated in combination, can produce the perception of any color.
a psychological approach that emphasizes that we often perceive the whole rather than the sum of the parts
the tendency to perceive objects that are close to each other as part of the same grouping
Perception of an object as the same size regardless of the distance from which it is viewed
a tone's experienced highness or lowness; depends on frequency
Older adults frequently experience a decrease in this sense which makes it difficult to perceive the flavor of food.
the organization of the visual field into objects (the figures) that stand out from their surroundings (the ground).
The clear tissue that covers the front of the eye
the minimum difference between two stimuli required for detection 50 percent of the time
depth cues, such as retinal disparity and convergence, that depend on the use of two eyes
afterimages support this theory of color vision
a mental predisposition to perceive one thing and not another
sharpness of vision
the central focal point in the retina, around which the eye's cones cluster
cocktail party effect
Ability to concentrate on one voice amongst a crowd
conversion of one form of energy into another. In sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neural impulses our brains can interpret.
the principle that one sense may influence another, as when the smell of food influences its taste
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