PSYC 100 Exam 2 UIUC | Questions
and correct detailed Answers | 2026
Updates | 100% correct
sensation - ANSWER- -detecting physical energy with our sense organs
perception - ANSWER- -the brain's interpretation of the raw sensory information
illusion - ANSWER- -the way we perceive a stimulus doesn't match its physical reality
transduction - ANSWER- -conversion of an external stimulus into a neural signal
sensory receptors - ANSWER- -specialized cells designed to convert a certain kind of external
information into a neural signal
sensory adaptation - ANSWER- -sensory neurons adjust their sensitivity based on recent
stimulus history
aftereffects - ANSWER- -are opposing sensory or perceptual distortions that occur after
adaptation
psychophysics - ANSWER- -the study of how our sensations correspond to physical events in
the world
absolute threshold - ANSWER- -the lowest level of a stimulus needed for the nervous system
to detect a change 50% of the time
, just noticeable difference (JND) - ANSWER- -the smallest change in the intensity of a stimulus
that we can detect
weber's law - ANSWER- -the stronger the stimulus, the bigger the change needed to detect
it/ amount of stimulus energy required to produce a JND
signal detection theory - ANSWER- -how stimuli are detected under different conditions
signal - ANSWER- -what you are trying to detect
noise - ANSWER- -similar stimuli that might compete with the signal and interfere with your
ability to detect the signal
signal to noise ratio - ANSWER- -difficulty of detecting the signal depends on the strength of
the signal in relation to the strength of the noise
hit - ANSWER- -stimulus present + respond yes
miss - ANSWER- -stimulus present + respond no
false alarm - ANSWER- -stimulus absent + respond yes
correct rejection - ANSWER- -stimulus absent + respond no
response criterion - ANSWER- -how liberal or conservative you are about saying yes
and correct detailed Answers | 2026
Updates | 100% correct
sensation - ANSWER- -detecting physical energy with our sense organs
perception - ANSWER- -the brain's interpretation of the raw sensory information
illusion - ANSWER- -the way we perceive a stimulus doesn't match its physical reality
transduction - ANSWER- -conversion of an external stimulus into a neural signal
sensory receptors - ANSWER- -specialized cells designed to convert a certain kind of external
information into a neural signal
sensory adaptation - ANSWER- -sensory neurons adjust their sensitivity based on recent
stimulus history
aftereffects - ANSWER- -are opposing sensory or perceptual distortions that occur after
adaptation
psychophysics - ANSWER- -the study of how our sensations correspond to physical events in
the world
absolute threshold - ANSWER- -the lowest level of a stimulus needed for the nervous system
to detect a change 50% of the time
, just noticeable difference (JND) - ANSWER- -the smallest change in the intensity of a stimulus
that we can detect
weber's law - ANSWER- -the stronger the stimulus, the bigger the change needed to detect
it/ amount of stimulus energy required to produce a JND
signal detection theory - ANSWER- -how stimuli are detected under different conditions
signal - ANSWER- -what you are trying to detect
noise - ANSWER- -similar stimuli that might compete with the signal and interfere with your
ability to detect the signal
signal to noise ratio - ANSWER- -difficulty of detecting the signal depends on the strength of
the signal in relation to the strength of the noise
hit - ANSWER- -stimulus present + respond yes
miss - ANSWER- -stimulus present + respond no
false alarm - ANSWER- -stimulus absent + respond yes
correct rejection - ANSWER- -stimulus absent + respond no
response criterion - ANSWER- -how liberal or conservative you are about saying yes
