lecture 4 visual perception

Question 1

akenotposia

Answer 1

unable to percieve motion, is able to notice object change position but not see it move

Question 2

COPLVROV

path of light
light enters through the ____, the ___ opens or closes to control the amount of light,___ refract light rays due to ____
causeing a ___ on the retina

Answer 2

through the cornea
iris
cornea

Question 3

retina layers and uses
1.
2.
3.

Answer 3

photos go to photocreceptors
stimulate bipolor and ganglioncells which make up a bundle of nerve fibers called the optic nerve

Question 4

responsible for laterial interaction in the retina

Answer 4

amercrine and horozontal cells

Question 5

center of the retina

Answer 5

fovia

Question 6

light sensitive cells in back of eye

Answer 6

photoreceptors

Question 7

2 types of photoceptors adn
1.rods
2. cones

differeiciate between the two

Answer 7

rods: black and white, low light sensitive

cones: COLORRR, not light sensitive
have short, medium, long

Question 8

what deos the fovia do

Question 9

what is the relatinsip between fovia and color

Answer 9

as we dec d to fovia, the amt of hue inc

Question 10

rods popukate the ___ regions of the retina

Answer 10

outer

Question 11

rods and cones do nit repot direclt to the cortex

true or false

Answer 11

true

Question 11

where nerual fibers make up rods exit the eye

Answer 11

blind spot

Question 12

lateral inhibition

Answer 12

pattern of cells stimulate stop activity of other cells

Question 13

me has 2 guys strapped to a chair, i point a gun at guy a. guy a is SO INTENSLY stimulated/overwhelmed that he screams and guy b stops processing. another guy is in a different room. these guys fear responce goes across to each other and inhibition dec as the cells continue

this is an extreme example of

Answer 13

lateral inhibition

Question 14

nervous systeme relationsip btw stimulus and epresented activity

Answer 14

visual coding

Question 15

recod moment by moment electrical changes in a SINGLE neuron

Answer 15

single cell coding

Question 16

how does single cell coding work?

Answer 16

elecrode is sx into neuron and comp recods firing rate of action potential

Question 17

center surround cells
firing rste left to right

ex:

Answer 17

ganglion cells inr etina

Question 18

advangatace of parallel processing

Answer 18

divide and conquer, processing happens alll at once
mutual influence
no watigng for other processes compelte

Question 19

SERIAL processing

Answer 19

step by step processing

Question 20

what system does what
damage to this region results in

Answer 20

id of cistual objects

agnosia

Question 21

where system

Answer 21

processing LOCation of visual obj

damage=

Question 22

spatial position

Answer 22

visual areas processing feature assignd spatial feature of opj to combine to create a scnee

Question 23

neural syncrony

Answer 23

fire in a syncronous rythm with each other

Question 24

form perception, describe process of seeign an object

Answer 24

1. recognize simple visutal features 2. arage reature into full obj and give it meaning 3. recognize obj

Question 25

gestalt psych SPGCS (spugus)

Answer 25

the whoel is different than sum of part

Question 26

ambigious figure

Answer 26

perception based on knowledge

Question 27

similarity

Answer 27

tendancy to group into collums

Question 28

proximity

Answer 28

grouo by closenesss

Question 29

good continuation

Answer 29

see cont green bar rather than 2 similar thignfs

Question 30

closeure

Answer 30

fill in broken lines

Question 30

simplicitity

Answer 30

look at object in the simplest way possible

Question 31

orginazation features

Question 32

perpetual process involces

Answer 32

info gathering anf itnerpretation

Question 33

perceptual constncy

Answer 33

percieve constsnt obj properties through changes shape and size

Question 34

brightness cosnt

Answer 34

percive brightness of obj accuacy

Question 35

size constancy

Answer 35

correctly percieve an obj size outside of retinal changes

Question 36

cpnstancy is inflenced by relationships between objects explain

Answer 36

distance can dec image size and mispercieve size

Question 37

shape constancy

Answer 37

see shape regardless of retinal changes

Question 38

distance cues

Answer 38

features of stimulus that indicate obj position

Question 39

binocular disparity

Answer 39

difference between each eyes view

Question 40

dept depend on what eye can see by itslef

Answer 40

monocular cues

Question 41

motion is a distance and depth cue

Answer 41

motion parallax: pattern of motion in retinal imafes