Multiple Sclerosis Is a Disease in Which the Myelin Sheath

question 49

Multiple Choice

Multiple sclerosis is a disease in which the myelin sheath is destroyed. What will happen to nerve conduction speed in affected neurons?

• A) It will slow down dramatically.
• B) It will speed up dramatically.
• C) It will speed up just a little bit.
• D) There will be no effect.

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Definitions:

Conditioned Stimulus

An initially neutral stimulus that, after association with an unconditioned stimulus, triggers a conditioned response.

Unconditioned Response

An automatic, innate reaction to a stimulus without prior learning or conditioning.

Positive Reinforcers

In behavioral psychology, stimuli that, when presented following a behavior, increase the likelihood of that behavior being repeated.

Negative Reinforcers

In behavioral psychology, an unpleasant stimulus whose removal leads to an increase in the likelihood that a preceding behavior will be repeated in the future.