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Psych 101 Test #2
Psych 101 Test #2
26
Psychology
03/03/2010

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Cards

Term
Sensation
Definition
receiving, converting, and transmitting raw sensory information from external and internal sources to the brain
Term
Perception
Definition
selecting, organzing, and interpreting sensory info
Term
Synethesia
Definition
A mixing of sensory experiences (tasting purple)
Term
Transduction
Definition
converting a stimulus to a receptor into neural impulses
Term
Sensory Reduction
Definition
filtering and analyzing incoming sensations before sending a neural message to the cortex
Term
Coding
Definition
process that converts a particular sensory input into a specific sensation
Term
Psychophysics
Definition
study of the relation between attributes of the physical world and our psychological experience of them
Term
Absolute threshold
Definition
minimal difference needed to notice a stimulus change; also called the "just noticable difference: (JND)
Term
Sensory Adaptation
Definition
Rpeated or constant stimulation decreases the number of sensory messages sent to the brain, which causes decreased sensation
Term
Gate-Control Theory of Pain
Definition
Theory that pain sensations are processed and altered by mechanisms within the spinal cord
Term
Wavelength
Definition
distance between peaks of light or sound waves, the shorter the wavelength, the higher frequency
Term
Frequency
Definition
How often a light or sound wave cycles (# of wavelengths in a given time)
Term
Amplitude
Definition
height of light or sound wave - brightness and loudness
Term
Accomodation
Definition
auto adjustment of the eye, muscles change shape of lens to focus on different distances
Term
Nearsightedness (Myopia)
Definition
image is focused in front of the retina
Term
Farsightedness (hyperopia)
Definition
image is focused behind the retina
Term
Retina
Definition
light-sensitive inner surface of the back of the eye, contains receptor cells for vision (rods and cones)
Term
Rods
Definition
receptor cells in the retina that detect shades of gray and are responsible for peripheral vision and are most sensitive in dim light
Term
Cones
Definition
receptor cells, concentrated near the center of the retina, reponsible for color vision and fine detail; most sensitive in brightly lit conditions
Term
Fovea
Definition
A tiny pit in the center of the retina filled with cones and responsible for sharp vision
Term
Audition
Definition
Sense of hearing
Term
Cochlea
Definition
3 chambered, snail-shaped structure in the inner ear containing the receptors for hearing
Term
Place Theory
Definition
Explains how we hear higher-pitched sounds; different high-pitched sounds bend the basilar membrane hair cells at different locations in the cochlea
Term
Frequency Theory
Definition
Explains how we hear lower-pitched sounds; hair cells in the basilar membrane bend and fire neural messages (action potential) at the same rate as the sound frequency
Term
Conduction deafness
Definition
Middle-ear deafness resulting from problems with transferring sound waves to the inner ear
Term
Nerve deafness
Definition
Inner-ear deafness resulting from damage to the cochlea, hair cells, or auditory nerve