The phantom limb phenomenon is apparently caused by:Group of answer choicesA. irritated neurons that trick the brain into interpreting nerve impulses as real sensations.B. depressive symptoms experienced by the amputee.C. expectancy and placebo effects about what is supposed to happen when a limb is lost.D. damage to the motor cortex.
Question
The phantom limb phenomenon is apparently caused by:Group of answer choicesA. irritated neurons that trick the brain into interpreting nerve impulses as real sensations.B. depressive symptoms experienced by the amputee.C. expectancy and placebo effects about what is supposed to happen when a limb is lost.D. damage to the motor cortex.
Solution
The phantom limb phenomenon is apparently caused by irritated neurons that trick the brain into interpreting nerve impulses as real sensations. This is because when a limb is amputated, the brain continues to receive signals from the nerves that originally carried impulses from the missing limb. These signals can cause the brain to perceive sensations, including pain, as if they are coming from the missing limb. This is not related to depressive symptoms, expectancy and placebo effects, or damage to the motor cortex.
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