BIO365R Spring 2008 Exam 3+Key

BIO365R Spring 2008 Exam 3+Key - Print your first initial...

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Unformatted text preview: Print your first initial and last name: ___________________________________ 1 Your UTEID: ___________Your signature: ___________________________________ Biology 365R Exam III November 17, 2008 Take the exam in INK. Print your name at the top of each page and enter your UEID and sign above. If you make a mistake on a question or need additional room you can use the back of the same page. Please use complete sentences unless a phrase or word is required as the answer. Take a deep breath and Good luck! The drawing below shows a set of visual receptive fields of neurons on a blackboard in front of an anesthetized cat. The neurons are numbered 1-16. The receptive fields are adjacent to each other on the blackboard. They represent a small fraction of the blackboard surface that the cat sees. 1. Give a one or two sentence definition of a receptive field. Make your definition general, so it applies to any neuron in any sensory system. Print your first initial and last name: ___________________________________ 2 2. Where in the visual system would you expect to encounter neurons with receptive fields such as those shown on the previous page? Be as specific as possible by giving the names of the particular neurons and the places where those neurons are located. 3. What kind of receptive fields are diagrammed on the previous page? They have a name. Please give that name (the only answer desired here). 4. Where (in what part of the brain) would you have to make a recording to find a simple cell? 5. Diagram a neuronal circuit in the space below that you think would generate a simple cell. Do not make drawings of receptive fields. Use circles for neurons and connect them to a target neuron that will be the simple cell. Use the number designations on the receptive fields in the diagram to label the other neurons. Note there are a large number of possible simple cells. You are only required to generate a circuit for one of them. 6. Describe the stimulus that would activate your simple cell. 7. Would your simple cell most likely be responsive to both eyes or just one eye? Print your first initial and last name: ___________________________________ 3 8. There is another kind of circular receptive field of neurons in the visual system different from the ones shown on the first page. Write the name given to this type of receptive field. Then make a drawing of such a receptive field. 9. Describe how the scientist who discovered these receptive fields made his observations. That is, you should explain how the receptive field was mapped. In the process you should explain the symbols used in the diagram in your question 8 and in the diagram on the first page. diagram on the first page....
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This note was uploaded on 12/03/2009 for the course BIO Biology taught by Professor Thompson during the Spring '09 term at University of Texas at Austin.

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BIO365R Spring 2008 Exam 3+Key - Print your first initial...

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