"We have considered whether the fetus, once its nociceptive pathways are complete, can feel pain in utero in a psychological manner akin to adult pain experience, and whether regardless of this the physiological responses to nociceptive input may lead to altered behavior later in life. We conclude that there is currently no strong evidence to suggest that the fetus is ever awake, even transiently; rather, it is actively kept asleep (and unconscious) by a variety of endogenous inhibitory factors."
January 1, 1970