Biol 261 exam 3 S Ans 2007

Biol 261 exam 3 S Ans 2007 - Biology/ANNB 261 Exam 3 Name_...

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Biology/ANNB 261 Exam 3 Name______________________ Fall, 2007 Choose the BEST answer for each question. (Each answer = 2.5 points) 1. You are recording action potentials generated by a cell in the cortex that responds to color differences. What kind of cell could it be? a) A blob cell* b) An interblob cell c) An M-type ganglion cell d) A P-type ganglion cell e) A thick stripe cell 2. The flow of visual processing that processes visual information used in determining what an object is, takes place in the . _____________ cortex. a) Parietal b) Frontal c) Prefrontal d) Temporal* e) Insular 3. The analysis of where a visual stimulus is moving in space is believed to be processed in the a) Parietal lobe of the cortex* b) Frontal lobe of the cortex c) Temporal lobe of the cortex d) Cerebellum e) Superior colliculus 4. Specific columns of neurons in the MT area contribute to the perception of a visual stimulus if the stimulus is a) Moving in a specific direction.* b) A specific length or shape. c) Located on the fovea. d) A spot or a bar. e) All of the above. 5. Neurons in primary visual cortex will show a) Direction selectivity b) Orientation selectivity c) Color opponency d) Movement selectivity e) All of the above* 6. The major difference between red-center, green-surround single opponent cortical cells and red-green, center-surround double opponent cortical cells a) The single opponent cell responds best when red light is in the surround area of the receptive field whereas the double opponent responds to red light in either part of its receptive field. b) One type of cell is movement sensitive and the other is not. c) One type of cell is color sensitive and the other is not. d) The double opponent cell responds best when red light is in the center of the receptive field whereas the single opponent cell responds strongly but in opposite directions to red light in either part of its receptive field. e) None of the above.*
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7. Simple feature detection cells in mammalian species are able to contribute to form perception because they respond well to a) movement of a bar or line. b) unique contours aligned with their small concentric receptive fields. c) edges aligned with the orientation of their receptive fields *. d) a dot or spot mimicking the movement of a ”bug” (hence the name “bug detector”). e) None of the above is correct. 8. Complex feature detection cells are able to contribute to form perception because these cells a) Respond well to movement. b) Respond well to edges because of their small receptive fields. c) Are able to detect edges of a visual stimulus when the wavelengths of light on either side of the edge are different intensities. d) Have unique inhibitory areas (e.g., shaped like angles) within their receptive fields. e)
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This note was uploaded on 04/18/2008 for the course BIOL 261 taught by Professor Delay during the Spring '08 term at Vermont.

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Biol 261 exam 3 S Ans 2007 - Biology/ANNB 261 Exam 3 Name_...

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