If a stimulus is applied continuously to a specific spot on the skin, what happens to the perception of pressure?
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Demonstrating Adaptation of Touch Receptors In many cases, when stimulus is prolonged without change, the rate of receptor discharge slows and conscious awareness of the stimulus declines or is lost. To demonstrate this, you can use coins. If you close your eyes and place one coin on the anterior surface of the forearm, the sensation will persist for a while and then stop, even though the coin is still there. After the awareness of the sensation has been lost, if you stack more coins on top of the first one, the pressure sensation will return. Why do you think the subject has to close their eyes in this experiment? Are the receptors involved fast-adapting (phasic) or slow-adapting (tonic)? What does the fact that the sensation returns when you place additional coins indicate about these receptors? Are they responding to the stimulus or to the change in stimulus? Give one example of a sensation that your nervous system will quickly adapt to (besides the example given in this lab).
Josee P.
3) Demonstrating Adaptation of Touch Receptors In many cases, when a stimulus is prolonged without change, the rate of receptor discharge slows and conscious awareness of the stimulus declines or is lost. To demonstrate this you can use coins. If you close your eyes and place one coin on the anterior surface of the forearm, the sensation will persist a while and then stop even though the coin is still there. If after the awareness of the sensation has been lost, you stack 3 more coins on top of the first one the pressure sensation will return. Why do you think the subject has to close their eyes in this experiment? Are the receptors involved fast-adapting (phasic) or slow-adapting (tonic)? What does the fact that the sensation returns when you place additional coins indicate about these receptors (are they responding to a stimulus or to the change in a stimulus)? Give one example of a sensation that your nervous system will quickly adapt to (besides the example given in this lab).
Adi S.
How is the brain informed that a receptor is adapting to a stimulus?
Sri K.
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