Sample midterm 3 2008 key

Sample midterm 3 2008 key - YOUR NAME Student ID MIDTERM 3...

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YOUR NAME__________________________ Student ID#_________________ 1 NPB 100 MIDTERM 3 SPRING, 2008 Your signature______________________ Please check this box if you do not want your exam returned in the bins in the hallway… Question Score Total 1 17 2 24 3 18 4 6 5 10 6 4 7 20 8 1 TOTAL 100
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YOUR NAME__________________________ Student ID#_________________ 2 Question 1 (17 points total) You are recording in the Owl’s RIGHT nucleus laminaris (in class we talked about recording from the left nucleus laminaris). 1a. (3 points) On the axes below, draw a curve representing the responses of a cell that has equal numbers of synapses from the two ears. LABEL YOUR CURVE “Cell #1”. 1b. (3 points) On the same axes draw a curve showing the response of a cell that gets more synapses from the right ear than from the left ear. LABEL THIS CURVE “Cell #2”. 1c. (2 points) Which (if any) of these two cells will fire action potentials in response to a sound above the owl? Cell #1 and cell #2 1d. (2 points) Which (if any) of these two cells will fire action potentials in response to a sound below the owl? Cell #2 1e. (2 points) Which (if any) of these two cells will fire action potentials in response to a sound directly in front of the owl? Cell #2 1f. (3 points) You now put an earplug into the owl’s right ear. This ear plug decreases the loudness of sound in the right ear and also increases the delay to the right ear. On the axes above, draw a curve showing the response of Cell # 1 while the owl has the ear plug in. LABEL THIS CURVE “Cell #1 with ear plug”.
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YOUR NAME__________________________ Student ID#_________________ 3 1g. (2 points) The ear plug will make the owl perceive a sound directly in front of its head as: (Circle the correct answer) a) Straight in front (no change) b) To the left, with no change in elevation c) To the right, with no change in elevation d) Above with no change in azimuth e) Below with no change in azimuth f) Above and to the right g) Above and to the left h) Below and to the right i) Below and to the left.
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  • Spring '10
  • CAMPBELL
  • hair cell, NAME__________________________ Student ID, inhibition inhibition inhibition, excitation excitation excitation

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