Essays
Due on Wednesday 10/16/13
Data table
Homunculus graph paper with proportions
Homunculus drawing
Questions #1-10 (do not print questions- just answer in complete sentences)
Due on Tuesday 10/22/13
Questions #11-23 (do not print questions- just answer in complete sentences)
Receptor Density- Two Point Discrimination of Touch
Part III. Analysis
1. Of the body parts tested, which part was able to distinguish between the closest stimuli? Why do you think that was?
2. Which part was least able to distinguish between the closest stimuli?
3. What do your results infer about the distribution of touch receptors in the skin?
4. From our lab observations, which part of the body has the greatest number of touch receptors?
5.
Is there an advantage for your answer #4 to have more touch receptors? Explain.
6. You choose one side of your body when doing your tests, now for three other areas in your body please conduct the same tests (for instance if you initially chose the right arm, now do the left arm). From those few tests, make a generalization and explain:
a. Was there a difference between the left and right side?
b. If there was a difference between the left and right side measurements, why do you suppose that occurs?
c. If there was no difference, why?
7. Look at your homunculus and compare your results (meaning look at the differences of proportions of your drawing) with everyone at your table. Where there any similarities?
Differences?
8. Ernst Weber was a physician in Germany who was renown for experimentation with the human psyche. One of his early experiments was the two point discrimination your performed and its relationship to weight. Now compare your results to a famous German physiologist, E.H. Weber
(obviously not all the parts apply so chose the ones that did). How did your results compare (see chart on next page)?
Two-point threshold values from E. H. Weber's De Tactu, 1834
Values below are
Data table
Homunculus graph paper with proportions
Homunculus drawing
Questions #1-10 (do not print questions- just answer in complete sentences)
Due on Tuesday 10/22/13
Questions #11-23 (do not print questions- just answer in complete sentences)
Receptor Density- Two Point Discrimination of Touch
Part III. Analysis
1. Of the body parts tested, which part was able to distinguish between the closest stimuli? Why do you think that was?
2. Which part was least able to distinguish between the closest stimuli?
3. What do your results infer about the distribution of touch receptors in the skin?
4. From our lab observations, which part of the body has the greatest number of touch receptors?
5.
Is there an advantage for your answer #4 to have more touch receptors? Explain.
6. You choose one side of your body when doing your tests, now for three other areas in your body please conduct the same tests (for instance if you initially chose the right arm, now do the left arm). From those few tests, make a generalization and explain:
a. Was there a difference between the left and right side?
b. If there was a difference between the left and right side measurements, why do you suppose that occurs?
c. If there was no difference, why?
7. Look at your homunculus and compare your results (meaning look at the differences of proportions of your drawing) with everyone at your table. Where there any similarities?
Differences?
8. Ernst Weber was a physician in Germany who was renown for experimentation with the human psyche. One of his early experiments was the two point discrimination your performed and its relationship to weight. Now compare your results to a famous German physiologist, E.H. Weber
(obviously not all the parts apply so chose the ones that did). How did your results compare (see chart on next page)?
Two-point threshold values from E. H. Weber's De Tactu, 1834
Values below are