primitive reflex tonic labyrinthine reflex behavior_ontology "A reflex that arises when tilting the head back while lying on the back causes the back to stiffen and even arch backwards, the legs to straighten, stiffen, and push together, the toes to point, the arms to bend at the elbows and wrists, and the hands to become fisted or the fingers to curl." [wikipedia:Tonic_labyrinthine_reflex] George Gkoutos 2011-04-06T03:03:51Z TLR