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PSY200-CHAPETR 4 SENSATION AND
PERCEPTION Questions and Answers (100%
Correct Answers)
sensation
Ans: Simple stimulation of a sense organ.
perception
Ans: The organization, identification, and interpretation of a sensation in order to
form a mental representation.
transduction
Ans: many sensors in the body convert physical signals from the environment into
encoded neural signals sent to the central nervous system.
psychophisics
Ans: Methods that measure the strength of a stimulus and the observer's sensitivity
to that stimulus.
absolute threshold
Ans: The minimal intensity needed to just barely detect a stimulus in 50% of the
trials.
just noticeable difference (JND)
Ans: The minimal change in a stimulus that can just barely be detected.
weber's law
Ans: The just noticeable difference of a stimulus is a constant proportion despite
variations in intensity.
signal detection theory
Ans: The response to a stimulus depends both on a person's sensitivity to the
stimulus in the presence of noise and on a person's response criterion.
sensory adaptation
Ans: Sensitivity to prolonged stimulation tends to decline over time as an organism
adapts to current conditions
visual acuity
Ans: The ability to see fine detail.
retina
Ans: Light-sensitive tissue lining the back of the eyeball.
PSY200-CHAPETR 4 SENSATION AND
PERCEPTION Questions and Answers (100%
Correct Answers)
sensation
Ans: Simple stimulation of a sense organ.
perception
Ans: The organization, identification, and interpretation of a sensation in order to
form a mental representation.
transduction
Ans: many sensors in the body convert physical signals from the environment into
encoded neural signals sent to the central nervous system.
psychophisics
Ans: Methods that measure the strength of a stimulus and the observer's sensitivity
to that stimulus.
absolute threshold
Ans: The minimal intensity needed to just barely detect a stimulus in 50% of the
trials.
just noticeable difference (JND)
Ans: The minimal change in a stimulus that can just barely be detected.
weber's law
Ans: The just noticeable difference of a stimulus is a constant proportion despite
variations in intensity.
signal detection theory
Ans: The response to a stimulus depends both on a person's sensitivity to the
stimulus in the presence of noise and on a person's response criterion.
sensory adaptation
Ans: Sensitivity to prolonged stimulation tends to decline over time as an organism
adapts to current conditions
visual acuity
Ans: The ability to see fine detail.
retina
Ans: Light-sensitive tissue lining the back of the eyeball.
