PSYC 230 UIUC EXAM 1 Questions And
Answers 2025 Update.
Perception - Answer✔the process of organizing and interpreting sensory information, enabling
us to recognize meaningful objects and events
Are there really 5 senses? - Answer✔No, there are from 7-12 different senses
neural transduction - Answer✔receptors, transduction and neural response
Sensation - Answer✔activation of sensory receptors due to a stimulus in the environment
(physical stimulus---->neural signal)
Phenomenology - Answer✔internal experience that everyone has of the external world around
them
Aristotle and the Five senses - Answer✔Aristotle said there were five senses - smell, sight,
touch, taste, and hearing - but science suggests there are many more than that
Thomas Young - Answer✔showed that light, like waves, could be diffracted, color recptors
Johannes Mueller - Answer✔doctrine of specific nerve energies (distinct senses)
Von Helmholtz - Answer✔perception is constructed from both senses and cognitive processes,
unconscious inference, three basic color receptors
Hering - Answer✔colors are perceived through 2 pairs of opposing colors (four primary colors,
not three)
Weber's Law - Answer✔the just noticeable difference between two stimuli is based on a
proportion of the original stimulus rather than on a fixed amount of difference
Fechner - Answer✔father of psychophysics, the study of the relation between physical stimuli
and the perception they elicit
Fechner's Law - Answer✔sensation is a logarithmic function of physical intensity
Gestalt Psychology - Answer✔the whole is greater than the sum of its parts
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Law of Proximity (Gestalt) - Answer✔elements close to one another tend to be perceived as a
unit
Law of Common Fate (Gestalt) - Answer✔visual elements that move in the same speed and/or
direction are parts of a single stimulus
law of closure (gestalt) - Answer✔we tend to see complete figures even when part of the
information is missing
Law of Similarity (Gestalt) - Answer✔objects that are similar tend to be grouped together
Law of Good Continuation (Gestalt) - Answer✔elements that appear to follow the same
pathway tend to be grouped together
Gibson and Direct Perception - Answer✔sensation is perception, what you see is what you get
Information Processing Approach - Answer✔a perspective on understanding cognition that
divides thinking into specific steps and component processes (LIKE A COMPUTER)
computational approach - Answer✔Describes the problem the system is trying to solve and the
constraints it uses in order to solve it, most abstract
microelectrode - Answer✔a very fine electrode, generally used to record activity of individual
neurons
Neurophysiology - Answer✔explains the workings of the nervous system
Agnosia - Answer✔the inability to recognize familiar objects
Prosopagnosia - Answer✔inability to recognize faces
EEG (electroencephalogram) - Answer✔shows brain's electrical activity by positioning
electrodes over the scalp
fMRI (functional MRI) - Answer✔A technique for revealing bloodflow and, therefore, brain
activity by comparing successive MRI scans. fMRI scans show brain function
Psychophysical Scale - Answer✔a scale that measures the relationship between human
reactions and the physical stimuli causing these reactions
absolute threshold - Answer✔the minimum intensity of stimulation that must occur before you
experience a sensation
method of limits - Answer✔measure a subject's perception of stimuli by determining at what
level a stimulus is detected by a subject
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