Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Vision science > Motion perception > Flashcards

Motion perception Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is position-motion dissociation?

A

Motion can be experienced vividly in conditions where its change in location cannot be discriminated or when it is physically stationary

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

What are the two examples of position-motion processing?

A

Motion adaptation aftereffect

Fine grain motion illusion

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

Motion adaptation aftereffect

A

Adatping to a target in mortion in one direction causes a subsequently viewed target that is physically stationary to appear to move in the opposite direction

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

Fine grain motion illusion

A

When two similar targets are flashed consecutively in the retinal peripherym subject experiences motion when the separation between individual targets is below the resolution limit

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

What type of motion can the reichard motion detector detect?

A

First order

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

First order mechanisms

A

Motion defned y spatial displacement of luminance

Can be processed by simple cortical cells

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

Second order mechanisms

A

Motion defined by contrast envelopes

Can be processed by compelx cortical cells

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

Third order mechanisms

A

Motion created by displacement of salient features over time

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

Velocity

A

Rate of change of position of a target in a given direction

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

How do you measure velocity?

A

temporal frequency/spatial frequency

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

What are the different types of motion?

A

Real
Apparent
Induced
Inferred

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

What is real motion?

A

Target physically moves across the retina

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

What is apparent motion?

A

Motion produced by the sequential flashing of similar targets with spatial displacments

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

What is beta-motion?

A

Apparent motion that flashes between 60-200msec and is seen as a single target that translates spsce

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

What is PHI motion?

A

Apparent motion that flashes at 60msec and is perceived as a shapless form that moves

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

What are the two theories on why the form takes the color of the background in PHI motion?

A

Occlusion (form blocks the shape)

Physiological (rate of flicker isolates the motion system)

17
Q

What is induced motion?

A

Smaller stationary targets are perceived to move when presented in the vicinity of larger moving targets

18
Q

What is inferred motion?

A

Motion that is inferred by the displacement of a target over an extended period of time

19
Q

What are 4 regions of the brain that process motion?

A

Superior temporal sulcus
MT/V5
V3A
V1

20
Q

What is akinetopsia?

A

Syndrome in which patient loses the ability to perceive visual motion following cortical lesions outside the striate cortex

Vision science (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions