Chap 8

Question 1

Motion detector

Answer 1

Two adjacent receptors that can register change over time

Question 2

Apparent motion

Answer 2

The illusion of a smooth motion that results from an object moving super fast between locations

Question 3

Aperture

Answer 3

An opening where you can only see a part of an object

Question 4

Correspondence problem

Answer 4

When the motion detector system cannot tell what feature in frame 2 corresponds to a specific feature in frame 1

Question 5

Aperture problem

Answer 5

When an object is only partially viewed in a receptive field the direction of motion of the local feature and part of the object cannot be determined

Question 6

Magnocellular layers

Answer 6

Of LGN impair perception of large rapidly moving objects

Question 7

Middle temporal lobe

Answer 7

(MT) plays an important role in motion perception

Most neurons in MT are selective for motion in a specific direction

Question 8

Newson& pare (1988)

Answer 8

Trained monkeys to respond to correlate dot motion displays

Monkeys needed 10 times as many dots to correctly identify direction of motion

Question 9

Motion after effect (MAE)

Answer 9

The illusion that a stationary object is moving after staring at a moving object

Implies opponent process system

Question 10

Interocular transfer

Answer 10

When an effect like adaptation transfers from one eye to another

Question 11

MAE

Answer 11

Exhibits interocular transfer and must occur in neurons that responds to both eyes

Question 12

First-order motion

Answer 12

The motion of an objects that is based on changes in luminance

Question 13

Second-order motion /texture defined

Answer 13

Motion that changes in contrast or texture only

Question 14

Optic array

Answer 14

The collection of light rays that interact with objects in the world

Question 15

Optic flow

Answer 15

The changes in angular position of points based on the perceptive of an image that we see as we move through the world

Question 16

Focus of expansion

Answer 16

The focus of the expansion of the observer which way they are heading

Question 17

Tau

Answer 17

Information in the optic flow that signals TTC without needing to estimate absolute distances or rates

Question 18

V1 and MT

Answer 18

V1- local (gets parts of edges )

MT- global ( puts it together)

Question 19

Eye muscles

Answer 19

Six muscles attached to each eye & arranged in three pairs

Question 20

Superior colliculus

Answer 20

A structure in the mid brain that initiates and guides eye movements (electrically stimulated)

Question 21

Saccadic suppression

Answer 21

The reduction of visual sensitivity happens when we make saccadic eye movements

Question 22

Comparator (discriminates eye movement )

Answer 22

Receive one copy of the order issue by the motor system when the eyes move the other copy goes to the eye muscles

Question 23

Akinetopgia

Answer 23

No perception of motion cause by disruption to cortical are MT