Answer the question with detailed two paragraph answer
- Cross out the incorrect choices in parentheses: When you accidentally touch a red-hot coal, (warm fibers / A-delta fibers) respond with signals that lead to an immediate, sharp sensation of pain that makes you pull your hand away; then, the responses of (C fibers / cold fibers) lead to a prolonged sensation of pain. For days afterward, the burned area of skin hurts a lot if it’s just very lightly touched or even if sunlight hits it directly—this phenomenon, which is called (analgesia / sensitization), results from a lowered response threshold of the (nociceptors / thermoreceptors) in the burned area.
- Suppose that you break a small rough branch off a dead tree and are holding it in your right hand and that someone then pulls it out of your hand, leaving you with a painful splinter in your index finger. Which types of sensory receptors provide which kinds of information about this experience, from the moment you grab the branch to break it off to the moment you realize you have a painful splinter in your index finger? Which areas of your brain are involved in processing this information?
- Do you think that someone born without a right arm could experience the missing arm as a phantom limb? Explain why or why not.
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