sensation and perception Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

sensation

A

perception of a physical stimuli, transmitted to the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

perception

A

the further organisation and interpertation of sensory information in the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

bottom up processing

A

physical propeties of the stimuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

top down processing

A

how exisiting knowledge and expectation influence the interpertation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Transduction

A

the sensory system translates stimuli into patterns of neural impulses (sensory coding) The sesory receptors recieve a physical or chemical stimuli and transmit impulses to the brain, most pass through the thalamus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

qualitative

A

the basic propeties of the stimuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

quantitative

A

the intesity of the stimuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

absolute threshold

A

the minimume intesity of a stimuli before being detected

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

difference threshold

A

the smallest differnce between two stimuli that can be precieved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

signal recognition theory

A

either you feel something or you dont

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

sensory adaptation

A

is the reduction of sesitivity to a constant level of stimuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

synesthesia

A

combined experience, like taste and colour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

cornea (eye)

A

light enters the eye though here

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

pupil

A

narrow opening in the front of the eye, contraction and dilation of the pupil determins how much light gets in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

iris

A

determins the colour of the eye and regulates the size of the pupil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

accommodation (eye)

A

when the lens is flattened it focuses on a distant object and thickens when focusing on a close object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

retina

A

where an image is formed, in the back of the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

rods

A

darkness and no colour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

cones

A

lightness and color

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

fovea

A

a part in the eye, where it has alot of cones and no rods

21
Q

the transfer from eye to brain

A

electrical signals are generated by sensory receptors in the retina, these repetors contain photopigments. The signals converge in the ganglion cells (first neurons in the visual system)then travel in a bundle through the optic nerve to the thalamus.

22
Q

optic chiasm

A

all information from the left half of the eye goes to the right half of the brain and vice versa

23
Q

ventral stream

A

what, perception and recogniction of objects, determening colour and shape

24
Q

dorsal stream

A

where, (shark) spatial perception to determin location fo an object

25
Q

wavelengths range

A

400 to 700 nanometers

26
Q

how is color determined

A

by the length of the electromagnetic waves that reach the eye

27
Q

thrichromatic theory

A

three types of cones, red, blue, green. Blue cone is more sentive to short wave lengths, green is more sensitive to mid wave length, and red more sensitve to long waves (SML cones, short, mid, long)

28
Q

opponent process theory

A

red and green are opposite colour just liek blue and yellow. When one looks at a red image they see a green after image after looking away. This is because the recpetors for red get tired when they are active for a long time, but not the green receptors.

29
Q

hue (sight)

A

put the color of an object on the spectrum

30
Q

saturation

A

the purity of the color

31
Q

brightness

A

the intesity of color

32
Q

gestalt princeple

A

the whole is greater then the sum of its parts, the brain uses sensory information to organise it into a picture, these are proximity, similarity, continuity, closure, illusory

33
Q

distincion between figure and background

A

once the figure is percieved it is difficult to unsee it

34
Q

sightedness

A

any pattern characterised as a face will be seen as a face. the sesory system is highly sensitive to recognising faces.

35
Q

prosopagnosia

A

not being able to recognise faces

36
Q

binocular depth indicators

A

combining both eyes. signal is caused by the distance from the eyes, bith eyes have a slighty different image of the world , the brain maps two images that overlap. It enables to calculate depth, distance.

37
Q

convergence

A

the ability to move eyes inwards

38
Q

monocular depth indicaters

A

inforamtion from each eye seperatly, information about organisation. estamating the depth of an object thats far away.

39
Q

position in relation to the horizon

A

when something is far above it looks smaller

40
Q

perception of size

A

the further away the object the smaller the image

41
Q

motion perception

A

brain contains neurons that detect motion

42
Q

motion after effect

A

when one looks at a moving object for long and then at stationary it seems like the new image moves

43
Q

stroboscopic motion perception

A

illusian created when two or more slightly different images are presented in quick sessions.

44
Q

illusions

A

misinterpetation of a stimuli

45
Q

object consistency

A

when the brain percieves an object as constant, despite conflicting sensory data

46
Q

size consistency

A

one needs to know the size of the object

47
Q

shape consistency

A

one needs to know the angle from which the object is percieved

48
Q

colour consistency

A

one must compare the wavelengths of light reflected from the object with those from the background

49
Q

luminosity consistency

A

one needs to know how much light is reflected from the object and the background