Unit 7- Sensation and Perception Flashcards

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1
Q

sensation

A

the process of how our receptors receive and represent information

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2
Q

sensory receptors

A

sensory nerve endings that respond to stimuli

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3
Q

perception

A

the process of organizing and interpreting sensory information

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4
Q

bottom up processing

A

begins at your sensory receptors and makes it’s way up to the other levels of processing

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5
Q

top down processing

A

makes perceptions from both sensory input and past experiences, can often be wrong

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6
Q

selective attention

A

when awareness focuses on a singular part of any experience

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7
Q

cocktail party effect

A

the ability to listen to one voice in a sea of many

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8
Q

inattentional blindness

A

the blindness of millions of visual stimuli to not overwhelm our minds

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8
Q

change blindness

A

failure to notice a change in environment

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9
Q

signal detection theory

A

predicts when we will detect certain signals

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9
Q

transduction

A

translation of physical energy into electrochemical energy for processing

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10
Q

absolute threshold

A

the minimum stimulation necessary to detect something

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11
Q

subliminal

A

stimuli that are below your threshold

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12
Q

difference threshold

A

the minimum stimulus difference a person can detect half of the time

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13
Q

priming

A

an unconscious preparation

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14
Q

Weber’s Law

A

for two stimuli to be different there has a to be a certain percentage difference

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15
Q

sensory adaptation

A

When constantly exposed to unchanging stimuli we become less aware of it

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16
Q

wavelength

A

the distance of one wave peak to another

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17
Q

cornea

A

the clear outer layer of the eye

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17
Q

hue

A

color we experience

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18
Q

retina

A

a multilayered tissue on the eyes inner surface

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19
Q

intensity

A

amount of energy a wave contains

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20
Q

iris

A

a colored muscle that dilates or contracts due to intensity

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21
Q

lens

A

transparent focuser

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22
Q

pupil

A

a small adjustable opening

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23
Q

fovea

A

point of central focus

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24
Q

accommodations

A

when the lens changes the color and focus of waves

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25
Q

rods

A

retinal receptors for black, white, grey, movement, peripheral and twilight vision

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26
Q

cones

A

retinal receptors for daytime and color sensations, only behind the fovea

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27
Q

blindspot

A

a place in your eye with no receptor cells

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27
Q

light path

A

cornea → pupil →lens → retina

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28
Q

optic nerve

A

where the axons twine together

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29
Q

trichromatic theory (Young and Helmholtz)

A

the retina contains three color receptors red, green and blue

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30
Q

parallel processing

A

processing multiple things at once

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30
Q

opponent processing theory

A

color depends if the red green, blue yellow, or white black process in the retina

31
Q

feature detectors

A

nerve cells in the occipital lobes (visual cortex) that respond to a scenes edges, lines, angles and movements

32
Q

audition

A

the act of hearing

33
Q

amplitude

A

height of sound waves, determines loudness

34
Q

frequency

A

the length of sound waves and determines the pitch (high or low tone)

35
Q

cochlea

A

receives the transitions, is snail shaped, inside the inner ear, the vibrations open the oval windows and fluids ripple the basilar membrane which bends the hair cells on its surface

35
Q

decibels

A

how sound amplitude is measured

36
Q

eardrum

A

a tight membrane in the ear where sound waves first strike

37
Q

middle ear

A

a piston made of three tiny bones, the hammer, anvil and stirrup, which picks up vibrations and transmits them

38
Q

auditory nerve

A

where axons converge to carry the message to the thalamus then to the auditory cortex in the brains temporal lobe

39
Q

sensorial hearing loss (nerve deafness)

A

caused by damage to the hair cells or auditory nerve

40
Q

conduction hearing loss

A

caused by damage to the eardrum and middle ear bones

41
Q

cochlear implant

A

a device that converts sound into electrical signals that stimulate the auditory nerve

41
Q

tactile sense

A

our sense of touch

42
Q

endorphins

A

a brains natural pain killer

43
Q

gateway theory of control

A

it suggests the spinal cord has a neurological gate the controls the transition of pain to the brain

43
Q

phantom limb sensation

A

when a limb is amputated you can feel pain where there shouldn’t be with incorrect CNS input

44
Q

placebos

A

fake thoughts that convince your body it’s ok

45
Q

gustation

A

our sense of taste

46
Q

olfaction

A

the experience of smell

47
Q

kinesthesia

A

our bodies movement sense

48
Q

vestibular sense

A

our sense of body movement in balance

49
Q

sensory interaction

A

one sense influencing another

50
Q

Megurk effect

A

when our eyes see one sound our ear hears another so the brain blends them together

51
Q

embodied cognition

A

the influence of body sensations, and gestures on cognitive preferences or judgments

52
Q

gestalt

A

a form or whole of sensation clusters

53
Q

figure ground

A

the ability to separate faces from their backgrounds

54
Q

grouping

A

the tendency to organize randomness

55
Q

proximity

A

we group nearby figures

56
Q

continuity

A

we perceive smooth continuous patterns

57
Q

closure

A

we fill in gaps

58
Q

visual cliff

A

a model of a cliff with a drop off area that was fake, they then tried to coax 8 months old into going off but they would not

58
Q

depth perception

A

the ability to see three dimensions despite the eye receiving two dimensions

59
Q

retinal disparity

A

your brain compares images with both eyes to see distance

60
Q

binocular cues

A

a depth cue that relies of the use of two eyes

61
Q

monocular cues

A

depth cues available to each eye separately

62
Q

relative height

A

we perceive objects higher up as further away

63
Q

relative size

A

if two objects are similar in size then the one that has a smaller retinal image seem further away

64
Q

interposition

A

if one object is blocking another it seems closer

65
Q

linear perspective

A

parallel lines appear to meet in the distance, the sharper the angle of convergence the greater the perceived distance

65
Q

relative motion

A

while moving still objects may seem to move

66
Q

motion perception

A

the ability to correctly perceive approaching objects

66
Q

light and shadow

A

shading creates a sense of depth

67
Q

stroboscopic motion

A

perceives a rapid series of images varying as continuous movement

68
Q

phi phenomenon

A

an illusion of movement when two or more adjacent lights blink on and off quickly

69
Q

perceptual adaptation

A

the ability to adjust to changed sensory input

70
Q

perceptual set

A

a set of mental predispostion to see on thing and not the other (fox,owl,turkey, d?ck vs. bob, tom, bill, d?ck)

71
Q

context

A

what is surrounding us that affects our thinking

72
Q

extra sensory perception (ESP)

A

the idea that perception can happen without sensory input

73
Q

telepathy

A

mind to mind connection

74
Q

clairvoyance

A

perceiving remote events in another state

75
Q

precognition

A

perceiving future events

76
Q

parapsychology

A

the study of paranormal phenomena