Reference no: EM131126096
1. Place the steps of the reflex and response actions in their correct order by numbering them 1-9.
- Muscles in your arm and hand contract
- Sensory neurons are stimulated
- Sensory neurons transmit impulse to spinal cord
- Motor neurons transmit impulses to hand and arm muscles
- Reflex action - hand moves away from pan
- You go over to the sink to run your hand under cold water
- You put a bandage on the burn
2. Record results in Table:
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Trials
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Blink (yes/no)
Subject 1
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Blink (yes/no)
Subject 2
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Total (number of blinks)
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3. Using the following formula, calculate the percentage of blink responses for each test subject:
(Total number of blinks / total number of trials) x 100 = _____%
Subject 1 blink responses: _____%
Subject 2 blink responses: _____%
4. Were there any differences in the blink response between you and your partner? If so, explain how each of you responded differently.
5. Since you knew that the plastic wrap would prevent the cotton ball from hitting your face, why did the blink response occur? Explain.
6. List two situations in everyday life when the blink reflex would be activated in humans or pets.
7. Record the results in Table 18-2:
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Subject 1
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Subject 2
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Trial
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Distance (cm)
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Reaction time (sec)
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Distance (cm)
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Reaction time (sec)
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Mean
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8. Create a graph that compares the number of trials and the reaction times for the two test subjects.
9. Calculate the mode of your reaction times (most frequently occurring number) and determine the range of the data (difference between highest and lowest numbers).
Mode = __________ Range = __________
10. How do you think your reaction time would change if you repeated the test at the following times of day?
a. 7:00 am:
b. 5:00 pm:
c. 2:00 am:
d. after drinking a double black coffee or a can of Red Bull cola:
e. after taking two antihistamine tablets (such as cold medicines or Benedryl):
11. Would it be a good idea to administer the ruler reaction time test before you let someone drive their car home? Explain.
12. Did you see an afterimage? If so, what color was it? Approximately how long did the afterimage last?
13. Did you see an afterimage? If so, what color was it? Approximately how long did the afterimage last?
14. Is there a biological basis for his assertion? Explain.
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