Q. Can Serotonin used in consciousness?
Serotonin complements the action of noradrenalin and acetylcholine in promoting wakefulness and cortical responsiveness. Experiments provide evidence that the level of serotonin during waking is higher in most cortical and subcortical areas than during sleep.
The seretonergic neurons in the raphe nuclei show the highest firing rate during waking decrease their firing rate during slow wave sleep.