Answer:
RAS Dysfunction
If the RAS becomes damaged in any way, it can affect both wakefulness and sleep. 7 Such damage is often the result of a traumatic brain injury, such as an ischemic stroke or a severe blow to the head injury.
The RAS controls sleep and waking and fight-or-flight responses. While this system provides signals that modulate our wake-sleep states, it also serves to help us respond to the world around us.
Explanation:
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