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ch.4
definations
25
Physiology
11th Grade
09/09/2010

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Term
psychophysics
Definition
the study of how physical stimuli are translated into psychological experience
Term
sensation
Definition
is the stimulation of sense organs
Term
perception
Definition
is the selection,organization and interpretation of sensory import
Term
absolute threshold
Definition
is the minimum stimulus intensity an organ can detect 50% of the time
Term
just noticable difference(JND)
Definition
the smallest difference in a stimulus intensity that a sense can detect
Term
weber's law
Definition
the size of a just noticeable difference is a constant proportion of the size of the initial stimulus
Term
subliminal perception
Definition
the registration of sensory input without conscious awareness
Term
sensory adapation
Definition
is a gradual decline in sensitivity to prolonged stimulaiton
Term
cones
Definition
play a key role in daylight vision and color vison
Term
rods
Definition
play a key role in night vision and peripheral vison
Term
basilar membrane
Definition
holds the auditory receptors
Term
gustatory system
Definition
sensory system for taste
Term
olfactory system
Definition
sensory system for smell
Term
placebo effect
Definition
can cause a decreased sense of pain or eliminate it altogether
Term
kinesthetic system
Definition
monitors the positions of various body parts
Term
vestibular system
Definition
responds to gravity and keeps you informed of your body's location in space
Term
consciousness
Definition
is the awareness of internal and external stimuli
Term
circadian rhythms
Definition
24 hour biological cycles found in humans and other species
Term
stage 1
Definition
light sleep from 1-7 minutes
Term
stage 2
Definition
lasts 10-25 your respiratory rate, heart rate, muscle tension and body temp. all decline
Term
stage 3 and stage 4
Definition
takes 30 minutes to achieve and lasts 30 minutes.
Term
REM
Definition
rapid eye movement. (dream)
Term
lucid dream
Definition
realize your dreaming
Term
recurring dream
Definition
repeats without conflicts remain unsolved
Term
air planes
Definition
change or transition in life
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