Which of the following is considered direct evidence?
Questions
Which оf the fоllоwing is considered direct evidence?
A) Activity in “wаke-prоmоting” аnd “sleep-prоmoting” neurons regulаte the sleep-wake cycle. Where are most of the sleep-promoting neurons found in the brain? (1 pt) B) When sleep-promoting neurons are active, what effect do they have on wake-promoting neurons? (1 pt) C) Constantin von Economo found that patients with “sleeping sickness” that slept excessively following a viral infection had damage at the junction between brainstem and forebrain. Explain why damage in this region made it nearly impossible for these patients to stay awake. (2 pts) D) Death of hypocretin (also called orexin) neurons causes narcolepsy. Why does loss of these neurons lead to an inability to stay awake? (2 pts) E) Metabolic waste products and toxins can accumulate in spaces between neurons. Clearance of these substances by the “glymphatic” system, in which cerebrospinal fluid rinses out brain tissue, is important to maintaining brain health. What are the two factors that make clearance of waste/toxins by this system most effective during sleep? (4 pts)