PSYCH 101 Exam #2 Study Guide Key Concepts, Practice
Questions & Verified Answers
sensation |- |verified |answersthe |way |that |our |bodies |sense |stimuli
perception |- |verified |answershow |our |brains |process |the |stimuli |sensed |by |our |body
top-down |processing |- |verified |answersinformation |processing |guided |by |a |higher-level |mental |
processes
bottom-up |processing |- |verified |answersanalysis |that |begins |with |the |sensory |receptors
absolute |threshold |- |verified |answersthe |minimum |stimulation |necessary |for |detection |50% |of |the |
time
difference |threshold |- |verified |answersthe |minimum |difference |a |person |can |detect |between |any |two |
stimuli |50% |of |the |time
Weber's |Law |- |verified |answersfor |their |difference |to |be |perceptible, |two |stimuli |must |differ |by |a |
constant |proportion- |not |a |constant |amount.
Sensory |Adaptation |- |verified |answersour |diminishing |sensitivity |to |an |unchanging |stimulus
wavelength |- |verified |answersthe |distance |from |one |wave |peak |to |the |next; |determines |hue
intensity |- |verified |answersamount |of |energy |in |light |waves; |determined |by |a |waves |amplitude |
(height); |influences |brightness
accommodation |- |verified |answersfocuses |by |changing |its |curvature
blind |spot |- |verified |answerswhere |the |optic |nerve |lease |the |eye |there |are |no |receptor |cells
Cones |- |verified |answerscluster |around |the |fovea |(retina's |area |of |central |focus); |each |has |its |own |
bipolar |cell; |preserves |precise |information; |can |see |color; |can't |function |in |dim |light
Rods |- |verified |answersblack |and |white |vision; |capable |in |dim |light
Young-Helmholtz |trichromatic |theory |- |verified |answersretina |has |three |types |of |color |receptors, |each
|especially |sensitive |to |red, |green, |and |blue
Opponent-process |theory |- |verified |answersas |visual |information |leaves |the |receptor |cells, |we |analyze
|it |in |terms |of |the |opponent |colors
What |are |the |opponent |colors? |- |verified |answersred |and |green, |blue |and |yellow, |black |and |white
Gate-Control |Theory |- |verified |answersspinal |cord; |small |nerve |fibers |conduct |most |pain |signals, |
larger |fibers |conduct |most |other |sensory |signals; |spinal |cord |contains |a |neurological |"gate" |when |
tissue |is |injured, |the |small |fibers |activate |and |open |the |gate |and |you |feel |pain
Taste |- |verified |answerssweet |salty |sour |bitter |umami
