sleep and anesthesia: two different analogous

in its simplest and most positive terms, sleep is a desired state of unconsciousness. anesthesia in the contrary is another type of desired unconsciousness. however, they are actually like the two unequal twins sharing some features but different in others. sleep and anesthesia are different in several aspects making them unique neurophysiologic states with complex mechanisms of action. here, we aimed to compare these two states concisely, that may be a source of more interesting scientific pearls for whom working in this field especially sleep medicine specialists.