Station G This experimental set up is from the senses lab a. You dipped one fing

Question

Station G This experimental set up is from the senses lab a. You dipped one finger in the hot water until the "hot" sensation was no longer uncom you dipped a different finger the experiment? in the water. What kind of receptors were responsible for sensation in b. The process by which your finger adjusted to the temperature of the water is called When your elbow was immersed in the ice cold water for five minutes, your ring and pinky fingers also felt pain. This sensation of pain in the fingers is calledpain. c. d. When the "compass" is placed on the skin of the body and the subject can NOT distinguish two separate points, how many receptorts )/receptive fields ) is/are being stimulated?

Explanation / Answer

Ans a: Thermoreceptors, these receptorscperceive the sensation related to the temperature of objects the skin feels. They are found in the skin dermis layer. they are of two types hot and cold receptors.

Ans b: Homeostasis, body organ systems work together to maintain homeostasis consciously and unconsciously. They constantly adjust to changes in its external environment to keep the internal environment at optimal levels for the health.

Ans c: numbness or tingling in the thumb and next two or three fingers of the hand. Pain can extend to the wrist and even elbow.

Ans d:

Point localization error is a sequential test where a person must indicate the point on the body that was previously touched with a probe. The error between the two points is taken as a measure of tactile discrimination.

Point localization test vs. compass test:

The stimuli are presented successively in the localization test.
The stimuli are presented simultaneously in the compass test.
Localization errors are 3-4 times smaller than 2-point discrimination.

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