Before revision: With this reflex, tilting the head back while lying on the back causes the back to stiffen and even arch backwards, causes the legs to straighten, stiffen, and push together, causes the toes to point, causes the arms to bend at the elbows and wrists, and causes the hands to become fisted or the fingers to curl.
After revision: whichWith this reflex, tilting the head back while lying on the back causes the back to stiffen and even arch backwards, causes the legs to straighten, stiffen, and push together, causes the toes to point, causes the arms to bend at the elbows and wrists, and causes the hands to become fisted or the fingers to curl.