Sensation and Perception

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Created Jul 15, 2012
by
ahensel16

 

 
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1
Specialized cells that respond to a specific form of sensory stimulation
 
Sensory receptors
2
Process by which physical energy is converted into a coded neural signal to be used by the...
 
Transduction
3
Smallest possible strength of a stimulus that can be detected half the time
 
Absolute Threshold
4
(Just Noticeable Difference) smallest possible difference between two stimuli that can be detected...
 
Difference Threshold
5
Decline in sensitivity to a constant stimulus
 
Sensory Adaptation
6
The size of the JND will vary depending on its relation to the strength of the original stimulus
 
Weber's Law
7
Detection of stimuli below the threshold of conscious awareness
 
Subliminal Perception
8
Repeated exposure to a stimulus increases that person's preference for that stimulus
 
Mere exposure effect
9
Contains all energy waves in vision
 
Electromagnetic Spectrum
10
clear membrane covering visible part of eye that helps gather and direct incoming light
 
cornea
11
opening in middle of iris that changes size to let in different amounts of light
 
pupil
12
colored part of eye; a muscle that controls size of pupil
 
iris
13
transparent structure behind pupil that focuses, or bends, light as it enters the eye
 
lens
14
process by which the lends changes shape to focus light so it falls properly on the retina
 
accommodation
15
nearsightedness, light focused in front of retina
 
myopia
16
farsightedness, light focused behind retina
 
hyperopia
17
thin, light-sensitive membrane located at the back of the eye containing the photoreceptor...
 
retina
18
small area in center of retina where visual information is most sharply focused; composed entirely...
 
fovea
19
contains no rods/cones; place where the optic nerve exits the back of the eye
 
optic disk
20
point at which optic nerve leaves where there is a small gap in your field of vision
 
blind spot
21
specialized neurons in retina that connect the rods/cones with the ganglion cells
 
bipolar cells
22
specialized neurons in the retina that connect to bipolar cells; bundled axons from optic nerve
 
ganglion cells
23
thick nerve that exits from back of eyes and carries visual info the the brain
 
optic nerve
24
point in the brain at which optic nerve fibers from each eye meet and partly cross over to...
 
optic chiasm
25
property of wavelengths known as color (determined by wavelength)
 
Hue
26
property of color that corresponds to the purity of the light wave (single wave=more pure)
 
saturation
27
perceived intensity of a color, which corresponds to the amplitude of the light wave
 
brightness
28
the 5 basic tastes
 
Sweet, salty, sour, bitter, umami
29
sensory receptors for pain found in the skin, muscles, and internal organs
 
nocioceptors
30
a delta fibers transmit sharp, intense, short-lived pain due to immediate injury
 
fast system
31
C fibers transmit longer-lasting, throbbing, burning pain
 
slow system
32
sense of location of body parts in relation to one another
 
kinesthetic
33
sense of balance, receptors located in the inner ear
 
vestibular
34
receptors in muscles and joints that provide information about body position and movement
 
Proprioceptors
35
emphasizes the importance of sensory receptors in detecting the basic features of a stimulus...
 
bottom-up processing
36
emphasizes the importance of the observer's knowledge, expectations, and other cognitive processes...
 
Top-Down Processing

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