Chitra, a Neuron, Has Been Sending Offensive Messages to Neighboring

question 21

Multiple Choice

Chitra, a neuron, has been sending offensive messages to neighboring neurons. The neighbors decide to "perform surgery" to eliminate Chitra's transmissions. This could be achieved most effectively by

• A)locking the gates on Chitra's axon.
• B)reducing the strength of Chitra's action potentials.
• C)decreasing Chitra's refractory period.
• D)placing a myelin sheath on Chitra's axon.

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Definitions:

Placebo Learning

The phenomenon where improvements in a person's condition result from the belief in the efficacy of a treatment that has no therapeutic benefit.

Brainstem

The part of the brain connecting the spinal cord with the forebrain and cerebrum, responsible for controlling several basic life functions.

Dorsal Raphe Nucleus

A nucleus located in the brainstem involved in the release of serotonin and implicated in the regulation of mood, sleep, and anxiety.

Learned Helplessness

An instance where a person is overwhelmed by feelings of helplessness, caused by either a distressing event or continual lack of success.