Response to Stimuli Lab
- Introduction
- Station 1
- Station 2
- Station 3
Quickly sketch the data table below in your journal.
- One person provides the stimulus and records their partner’s response. The other person positions his or her arm and hand according to the locations indicated in the data table and closes their eyes. The first person gently touches the appropriate location surfaces of the inner and outer forearm, hand, and index finger with the one-point tester. Ask the partner if they feel one point or two. Record the data in the data table.
- Repeat with the 1 cm, 2 cm, and 3 cm testers on the outer surfaces and record the data.
- Repeat steps 2 and 3 on the inner surfaces of the forearm, hand, and index finger. Record your data.
Questions: (Record answers in your journal)
- Comparing the outer to the inner surfaces of your arm, which surface was more sensitive to the touch stimulus? Explain.
- Why would it be an advantage to have fewer sensory receptors on the outside surfaces of your arms?
- Comparing the different locations, which one was most sensitive? Explain.
- Why would it be important to have more sensory receptors in our hands?
- How does the sensitivity of the nerves in your skin play a part in the homeostasis of your body