At the end of the 20th century there was an emerging consensus among developmental neurobiologists that the establishment of thalamocortical connections (at about 26 weeks) is a critical event with regard to fetal perception of pain.
There was a rapidly growing debate among developmental neurobiologists at the end of the 20th century that setting up thalamocortical ties (at about 26 weeks) is a serious event in terms of the fetal sense of pain.