topic 6: sleep Flashcards
1
Q
what is an eeg?
A
surface electrons that collect the signals as a summation of activity. Synchronised activity and unsynchronised activity.
2
Q
When someone is awake there is…
A
desynchrony. stage 1 sleep- eyes still open and transitioning. stage 2: sws- larger waves- where the brain recovers.
3
Q
what is rem
A
rapid eye movement sleep, the brain is verya ctive and there is a loss of muscle tone.
4
Q
during arousal what areas of the brain are involved
A
the brainstem reticular formation, group of nuclei running through the medulla, pons and tegmentum. some of these make up the reticular activating system.
5
Q
acetycholinergic
A
long axons that go all over the brain, influence the cortex, the EEG will look like your awake. need this to be awake, it is low during sws.
6
Q
A
