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G. Tactile Location 1. 2. 3.

G. Tactile Location 1. 2. 3.

Biology 2e
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter36: Sensory Systems
Section: Chapter Questions
Problem 1VCQ: Figure 36.5 Which of the following statements about mechanoreceptors is false? Pacini corpuscles are...
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G. Tactile Localization Tactile localization is the ability to determine exactly which portion of the skin has been touched. Some areas of the body have a high density of touch receptors, and a strong ability to localize a stimulus. Other areas have a lower density of receptors and less ability to localize a stimulus. The subject should sit with eyes closed. Touch the palm of the subject's hand with a colored marker or pen. The subject then tries to touch that exact point with a different colored marker or pen. Measure the error in millimeters. Test all the areas three times, recording the results in the table below. Body area Trial 1 Trial 2 Trial 3 Trial 4 Upper back Fingertip Anterior forearm Anterior arm Palm of hand 1. Which areas seem to have a greater density of receptors? a. Upper back fingertip c. Anterior arm b. Anterior forearm d. Palm of hand 2. Does this agree with your findings in the two-point discrimination test? a. Yes b. No c. Cannot be determined 3. Does the ability to localize the stimulus consistently improve over all three trials? a. Yes b. No c. Cannot be determined
Transcribed Image Text:G. Tactile Localization Tactile localization is the ability to determine exactly which portion of the skin has been touched. Some areas of the body have a high density of touch receptors, and a strong ability to localize a stimulus. Other areas have a lower density of receptors and less ability to localize a stimulus. The subject should sit with eyes closed. Touch the palm of the subject's hand with a colored marker or pen. The subject then tries to touch that exact point with a different colored marker or pen. Measure the error in millimeters. Test all the areas three times, recording the results in the table below. Body area Trial 1 Trial 2 Trial 3 Trial 4 Upper back Fingertip Anterior forearm Anterior arm Palm of hand 1. Which areas seem to have a greater density of receptors? a. Upper back fingertip c. Anterior arm b. Anterior forearm d. Palm of hand 2. Does this agree with your findings in the two-point discrimination test? a. Yes b. No c. Cannot be determined 3. Does the ability to localize the stimulus consistently improve over all three trials? a. Yes b. No c. Cannot be determined
G. Tactile Location 1. 2. 3.
Transcribed Image Text:G. Tactile Location 1. 2. 3.
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