Sensory and Perception Flashcards Preview

A.P. Psychology > Sensory and Perception > Flashcards

Flashcards in Sensory and Perception Deck (115)
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1

sensation

stimulation of sense receptors and transmission of sensory info to CNS

2

perception

process of organizing/interpreting sensory infor to give us meaningful experiences

3

psychophysics

study of relationship between physical stimuli and psychological interpretation

4

bottom-up processing

sensory receptors - brain - perception

5

tup-down processing

experiences/expectations - perception

6

absolute threshold

minimum level of stimulation to detect a stimulus 50% of the time

7

subliminal messages

below absolute threshold for conscious awareness

8

subliminal stimuli can

prime associations

9

priming

activating certain associations which predisposes us to think or feel a certain way

10

difference threshold

minimum difference between two stimuli required for detection 50% of the time

11

Weber's law

thw two stimuli must differ by a constant proportion, not a constant amount

12

signal detection theory

predicts how/when we detect a stimulus

13

sensory adaptation

diminished sensitivity due to constant stimulation

14

how much of cortex is devoted to vision

25%

15

visual capture

tendency for vision to dominate other senses - make world conform to what wew see

16

light energy

stimulus for vision

17

wavelength of light determines

color/hue

18

amplitude of light determines

intensity/brightness

19

cornea

transparent, outer, protective layer that begins to focus light

20

pupil

hole in the eye which light enters

21

iris

circular muscle membrane that regulates pupil size

22

lens

protects eye and helps focus light

23

retina

light-sensitive inner surface of eye that contains receptor rods and cones

24

fovea

central focal point in retina around which cones cluster

25

transduction

transferring of stimulus energies into neural impulses

26

rodss are sesnsitive to

low light

27

cones are sensitive to

color and detail; need light to work

28

bipolar cells

cone is direct to bipolar; rods - multiple

29

visual acuity

near sight / far sight

30

feature detectors

nerve cells in brain that respond to specific features of sensory information