A type of an aesthetic sleep, in which the patient is semi-conscious but cannot feel any pain.
A state of partial anesthesia and hypo-consciousness in which pain sense has been greatly reduced by the injection of morphine and scopolamine. The patient responds to pain, but afterward the memory of the pain is dulled or effaced. Although once in common use as a method of analgesia for childbirth and minor surgery, twilight sleep has been replaced by more effective contemporary approaches to pain control.
Administering morphine and scopolamine through injection during childbirth creates a state of semi-anesthesia, where the pain is still felt but not remembered.