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| 1 | |
The ability to derive impressions of the 3-D shape of an object from that object's motion is called: |
| | A) | motion parallax |
| | B) | movement stereopsis |
| | C) | structure from motion |
| | D) | optic flow |
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| 2 | |
One of the most important features of biological motion is: |
| | A) | it requires viewing the display for at least one second |
| | B) | it requires that parts of the body move relative to one another |
| | C) | it is not sufficient to discriminate gender |
| | D) | it requires sophisticated thought processes to analyze |
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| 3 | |
Which of these statements is NOT true about optic flow? |
| | A) | The focus of radial expansion is where you are heading. |
| | B) | Features and objects aren't necessary to perceive optic flow. |
| | C) | Relatively little information is needed for a high degree of accuracy in determining direction. |
| | D) | It is one of the few aspects of vision that is unimpaired in older observers. |
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| 4 | |
The visual system is able to judge the time of arrival to an obstacle in part because it has a good estimate of the: |
| | A) | distance to the obstacle |
| | B) | individual's rate of travel |
| | C) | obstacle's size |
| | D) | change in the size of the obstacle's retinal image |
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| 5 | |
Which of the following is NOT a problem with using tau, the rate of change in the size of an object's retinal image, to predict the time to collision with an object? |
| | A) | It's accurate only if the approach rate is constant. |
| | B) | It's not accurate for vertical movements. |
| | C) | If the approach rate is too slow, the visual system can't detect the change in image size. |
| | D) | It's not possible unless the object is being watched continually. |
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| 6 | |
Which of the following is NOT an example of a smooth pursuit eye movement? |
| | A) | when you watch an interesting person strolling into the classroom |
| | B) | when your head moves but your eyes remain fixed on an object |
| | C) | when we look at something that catches our attention out of the corner of the eye |
| | D) | all of the above are examples of smooth pursuit eye movement |
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| 7 | |
Which of these statements about saccadic eye movements is FALSE? |
| | A) | They are extraordinarily fast. |
| | B) | They can be corrected once initiated. |
| | C) | They occur several times a second. |
| | D) | They result in a temporarily blurred image. |
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| 8 | |
Saccadic suppression may be partially due to: |
| | A) | the image being blurred by high retinal velocities |
| | B) | inhibitory surround mechanisms |
| | C) | activity in the temporal pathway |
| | D) | binocular rivalry |
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| 9 | |
If a person wills her eyes to move to the left, but her eyes are unable to move (say, from being paralyzed), the perceived environment will: |
| | A) | appear to move left |
| | B) | appear to move right |
| | C) | appear stationary |
| | D) | be suppressed entirely |
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| 10 | |
The accuracy of smooth eye movements depends on the: |
| | A) | direction of the moving target |
| | B) | distance to the moving target |
| | C) | size of the moving target |
| | D) | speed of the moving target |
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| 11 | |
The motion-selective neural network proposed by Reichardt: |
| | A) | detects motion in a particular direction, regardless of velocity |
| | B) | detects motion at a particular velocity, regardless of direction |
| | C) | detects motion at a particular direction and velocity |
| | D) | is only found in higher animals |
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| 12 | |
When asked to match the speed of a large moving square to that of a smaller moving square, subjects: |
| | A) | are quite accurate |
| | B) | make the large square move too fast |
| | C) | make the large square move too slowly |
| | D) | are quite random |
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| 13 | |
Second order motion: |
| | A) | is a measure of acceleration rather than velocity |
| | B) | is defined by luminance variation over space and time |
| | C) | can be detected by a simple Reichardt-style motion extracting circuit |
| | D) | includes the motion of texture boundaries |
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| 14 | |
Research on apparent motion has suggested that: |
| | A) | it occurs only when the two static stimuli are delayed in presentation by over one tenth of a second |
| | B) | subjects cannot determine the direction of the apparent motion unless they can discriminate the order in which the two static stimuli were presented |
| | C) | subjects cannot determine the direction of the apparent motion unless they can discriminate the spatial differences in the positions of the two static stimuli |
| | D) | it can be explained by the responses of simple direction selective neurons |
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| 15 | |
Research on the aperture problem suggests that: |
| | A) | a single neuron can uniquely specify the direction of a stimulus that is larger than the receptive field |
| | B) | there is only one unique set of stimulus conditions that will result in a given pattern of movement |
| | C) | the visual system's interpretation of a stimulus is usually the simplest global motion |
| | D) | the visual system will not alter its interpretation of the perceived direction of the stimulus behind an aperture |
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| 16 | |
Neurons in MSTd differ from MT neurons in that: |
| | A) | their receptive fields are much smaller |
| | B) | many respond quite strongly to stimulus rotation |
| | C) | they are located in the "dorsal" stream |
| | D) | they respond quite poorly to "looming" stimuli |
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| 17 | |
Motion aftereffects, such as the waterfall illusion are most likely caused by: |
| | A) | the autokinetic effect |
| | B) | akinetopsia |
| | C) | strabismus |
| | D) | motion adaptation |
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