6. Which theory wins when the world moves as we poke our eye with our finger?
Both
Helmholtz Outflow
Sherrington Inflow
7. What is the main concept of Helmholtz Outflow?
An efferent signal moves the eye muscles, a copy of this signal is sent to the comparitor. The retinal movement is also sent to the comparitor which is compared against the copy
An efferent signal moves the eye muscle. The eye muscle movement signal is sent to the comparitor. The comparitor compares the eye muscle movement signal with retinal movement
8. Is movement across the retina necessary for motion perception?
No as tracked objects still appear to move
No as the world stays still when we move our eyes
9. In stroboscopic movement, what is the optimal time inbetween presentations for movement?
10-30ms
30-60ms
60ms
10ms
10. When building a motion detector, why would a delay be used?
To indicate direction. A detector without a delay would respond to A->B aswell as B->A
To indicate speed, not direction. A detector with a delay would respond to A->B aswell as B->A
To indicate direction. A detector with a delay would respond to A->B aswell as B->A
To indicate speed, not direction. A detector without a delay would respond to A->B aswell as B->A
11. Is movement across the retina SUFFICIENT for motion perception?
No as the world stays still when we move our eyes
No as tracked objects still appear to move
12. In the Ternus dispay, what does a long ISI create?
Group motion
Element motion
13. What is the main concept of Sherrington Inflow?
An efferent signal moves the eye muscle. The eye muscle movement signal is sent to the comparitor. The comparitor compares the eye muscle movement signal with retinal movement
An efferent signal moves the eye muscles, a copy of this signal is sent to the comparitor. The retinal movement is also sent to the comparitor which is compared against the copy
14. What is the aperture problem caused by?
The direction of motion of a curved line is AMBIGUOUS. An infinite set of physical motions
The direction of motion of a straight line is AMBIGUOUS. An infinite set of physical motions
The direction of motion of a straight line is UNAMBIGUOUS. An infinite set of physical motions
The direction of motion of a curved line is UNAMBIGUOUS. An infinite set of physical motions
15. In orientation columns, what kind of activation is represented?
A pinwheel of activation
An umbrella of actvation
Columns of activation
No activation
16. Which theory wins when the world stays still as we move our eyes over a stationary scene?
Both
Helmholtz Outflow
Sherrington Inflow
17. How is ambiguity in the aperture problem resolved?
Rely on global 3D features (and 'end' stopping cells sensitive to lines and corners)
Rely on global 2D features (and 'end' stopping cells sensitive to lines and corners)
Rely on local 2D features (and 'end' stopping cells sensitive to lines and corners)
Rely on local 3D features (and 'end' stopping cells sensitive to lines and corners)
18. Which theory wins when the afterimage DOESN'T MOVE when we poke our eye in DARKNESS?
