Have Pediatric Questions? Ask a Pediatrician.
Hello. Welcome to JA. The grasp reflex is one type of frontal lobe disinhibition reflexes (along with the snout, root, palmomental and others. They indicate that the primitive monosynaptic reflexes that are found in the spinal cord are intact. Babies lose them as they develop, they are important if they are present only on one side.
The grasp can be lost during sleep (especially REM which is more than 50% in newborns. If you are concerned about symmetry do the Moro or startle reflex. Better is an EEG if you think there could be a problem. I hope that helps. If satisfied please remember to rate my service by clicking on the rating stars as that is how I am compensated for my work. Dr Frank