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Sensation and perception > lectures 1 > Flashcards

lectures 1 Flashcards

1
Q

goal of sensation and perception

A

to find out about the external world

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2
Q

what processes is sensation and perception the starting point of?

A

cognition
mental health
social
developmental/ educational

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3
Q

what are the 10 senses?

A 
vision 
hearing 
touch 
smell 
taste 
temperature 
pain 
balance 
acceleration 
body position
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4
Q

physical association of taste

A

chemicals

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5
Q

physical association of vision

A

light

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6
Q

physical association of hearing

A

sound waves

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7
Q

physical association of touch

A

pressure

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8
Q

physical association of smell

A

chemicals

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9
Q

receptor cells

A

specialised neurons that respond to a particular physical property of environmental stimuli `

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10
Q

sensory receptors are sensitive to…

A

physical properties in the environment

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11
Q

function of vision

A

object identification/ recognition
Navigation
Motion perception

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12
Q

function of audition

A

Object identification/ recognition

object localisation

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13
Q

function of touch

A

Object identification/ recognition

pain: detection of tissue damage

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14
Q

function of smell and taste

A

chemical detection/ identification

nutrition and poison avoidance

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15
Q

distal stimulus

A

physical object in the environment

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16
Q

proximal stimulus

A

information about the distal stimulus received by the sensory receptor cells
a representation of the distal stimulus

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17
Q

proximal stimulus

A

information about the distal stimulus received by the sensory receptor cells
a representation of the distal stimulus

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18
Q

transduction

A

the transformation of environmental physical energy into electrical energy in the nervous system

19
Q

neural processing

A

electrical signals transmitted from one neuron to the next

signal changed as neurons interact

20
Q

perception

A

conscious sensory experinece

21
Q

recognition

A

placing an object in a category

22
Q

visual form agnosia

A

inability to recognise objects

23
Q

what does visual form agnosia highlight?

A

distinction between recognition and perception

24
Q

action

A

movement

25
Q

bottom up processing

A

processing based on incoming sensory information

26
Q

top down processing

A

processing based on prior knowledge, experience and assumptions

27
Q

why is top down processing important?

A

helps simplify the perceptual process

28
Q

is perception top down or bottom up?

A

both

29
Q

types of imaging

A

fMRI
MEG
EEG
PET

30
Q

physiological approaches to studying perception

A 
studying anatomy 
recording brain activity 
-single cell recording 
-imaging
Micro stimulation 
Lesioning and TMS
31
Q

psychophysical approaches to studying perception

A

psychophysics lab

31
Q

psychophysical approaches to studying perception

A

psychophysics lab

32
Q

what does psychophysics do?

A

measures the relationship between stimulus and perception

uses carefully controlled experiments to test perceptual perfomance

33
Q

absolute detection

A

what is the smallest stimulus we can perceive?

34
Q

absolute intensity

A

taken as intensity that gives 75% correct performance

35
Q

galanter 1692

A

translated human absolute thresholds

36
Q

problem measuring absolute intensity

A

people have different criteria for saying yes I see it

37
Q

participants in psychophysics experiment

A

small number of participants

many repetitions

38
Q

name of function that graphs absolute detection

A

psychometric

39
Q

difference (discrimination)

A

what is the smallest difference we can perceive

40
Q

question type for discrimination

A

forced choice

41
Q

things to consider with value from difference discrimination

A

not a constant value/ quantity

it is related to the baseline level

42
Q

weber’s law

A

difference as a proportion of baseline quantity is constant (difference/ discrimination values)

Sensation and perception (12 decks)

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