Perception

Front 1

Area in retina comrised of comes only, where vision is best

Back 1

Fovea

Front 2

The M or "Where path in the cortex is also called the

Back 2

Dorsal path

Front 3

Retinotopic map refers to

Back 3

corresponding points on the retina, LGN and cortex

Front 4

A measurement of the weakest stimulus required to be detected by an observer

Back 4

Threshold

Front 5

Acuity is

Back 5

limited by blurring and receptive field sampling

Front 6

Used as a monocular depth cue

Back 6

Shading

Front 7

Facial expressions allow

Back 7

us to communicate with others

Front 8

Light energy in the form of waves and particles

Back 8

Photons

Front 9

Darkened spots in the Herman Grid demonstrates

Back 9

Lateral Inhibition

Front 10

Psychophsical measure used to deturmine processing time of a stimulus

Back 10

Reaction time

Front 11

The reason we have a blind spot is due to the

Back 11

migrating optic nerve

Front 12

Visual perception is accomplided by an observer seeing light

Back 12

False

Front 13

Perception is a continuous active process

Back 13

True

Front 14

All the info required for correct perception is contained in the stimuli

Back 14

False

Front 15

The image on out retina from incoming stimuli is a 3-D image

Back 15

False

Front 16

Optic flow always movies in the direction opposite the observer

Back 16

True

Front 17

Transduction of light energy into neural activity happens in the photoreceptors

Back 17

True

Front 18

A center-surrouns retinal cell is best at detecting how far an object is

Back 18

False

Front 19

Face perception can be shifted via adaptation

Back 19

True

Front 20

Parvocells are hightly sensitive to color

Back 20

False

Front 21

Each cone responds only to a single wavelength

Back 21

False

Front 22

Photopigment molecules and their gense are most similar in L and S cones

Back 22

False

Front 23

Apparent motion is utilized in motion pictures

Back 23

True

Front 24

Ambiguous figures have more than on interpretaion

Back 24

True

Front 25

A person with Prosopagnosia has problems recognizing faces

Back 25

True

Front 26

What is used by a neuron to carry information?

Back 26

1) The size of graded potentials
2) The timing of action potentials
3) The number of action potentials

Front 27

A stimulus maximally excites an on-center receptive cell, the stimulus is a

Back 27

bright spot on the center of the cell with a dark surround

Front 28

Color matching experiments demonstrates that normal subjects can match any light with a mixture of how many lights?

Back 28

3

Front 29

Perception is based on

Back 29

Both top down and bottom down processing

Front 30

Two lights that match each other will look?

Back 30

The same

Front 31

Any single cone is

Back 31

color blind

Front 32

A yellow light looks brighter when the intensity is

Back 32

increased

Front 33

Yellow and blue are mutually exclusive sensations; this is evidence of

Back 33

color opponency

Front 34

The trchromatic and opponent process theories of color vision are both correct since

Back 34

Trichromacy reflects receptor responese while opponency reflets post-receptoral properties

Front 35

Dichromatis is

Back 35

a sex-linked genetic disorder

Front 36

Info from the 2 eyes is organized so that

Back 36

each LGN receive inputs from only one eye

Front 37

In order to use disparity to perceive depth and animal must have

Back 37

eyes with overlapping visual fieds

Front 38

An objects visual angle is deturmined by

Back 38

its size and distance from the observer

Front 39

A region is more likely to be seen as a figure (rather than ground) if it is

Back 39

symmetrical

Front 40

To view objects in the distance the lens would be

Back 40

Relaxed and flattened

Front 41

Approches to studying pereption

Back 41

1) Psychophysical
2) Ecological
3) Physiological

Front 42

Selective adaptation causes

Back 42

some neurons to become less sensitive over time

Front 43

Studies of visual development have shown that

Back 43

There are large changes in vision after birth

Front 44

Compared to high spatial frequency, a low spatial frequency

Back 44

has few cycles per degree

Front 45

Binocular rivalry occurs when

Back 45

The two eyes view very different stimuli which cannot be fused

Front 46

A serial visual task suggests that

Back 46

each item is scanned in turn so reaction times increase with increased distractors

Front 47

Properties of sine wave gratings include

Back 47

phase
amplitude
spatial frequency

Front 48

Color constancy allows us to

Back 48

view red as red regardless of the viewing conditions

Front 49

Phyiological measurements of pereption includes

Back 49

fMRI
PET scans
Lesion studies

Front 50

The Meuller-Lyer illusion demonstrates a perceptual illusion in

Back 50

size

Front 51

The functions of motion

Back 51

1) to detect the presense of objects
2) to judge self motion
3) to judge depth

Front 52

Photoreceptors for night vision

Back 52

Rod

Front 53

Photoreceptor for daytime and color vision

Back 53

cones

Front 54

The visible specturm for humans falls approximately between

Back 54

400-700nm

Front 55

Normal photoreceptors that are selective for colors

Back 55

red, blue, green

Front 56

Red wavelength

Back 56

Long

Front 57

Green wavelength

Back 57

medium

Front 58

blue wavelength

Back 58

short

Front 59

If the size on an object remains constant while distance increases, visual angle will

Back 59

decrease

Front 60

Ekman demonstrated that emotional the emotional expression of what, was understood universally

Back 60

happyness

Front 61

Color can be described using 3 demensions:

Back 61

1) Hue
2) lightness
3) Saturation

Front 62

In the Feature Integration Theory of object perception the "pop out" condition happens when the observer is implementing a

Back 62

parrallell search

Front 63

Adapting to large gratings causes other objects to be

Back 63

larger

Front 64

Adapting to small grating causes other objects to appear

Back 64

smaller

Front 65

Adaptation only occurs for

Back 65

Close up objects.