Parkinson's disease is a deficiency of the neurotransmitter dopamine. Dopamine is responsible for how the brain deals with stress, especially the fight-or-flight response. Thus, it affects greatly on the movements of the body. Also, dopamine is responsible for information processing. That is why people with Parkinson's disease have trouble in retaining their memories or be in deep concentration.
Answer:
5. NREM
8. 9 to 9 1/2 hours
9. ninety minutes to two hours.
Explanation: Hopes this help
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