Frontal release sign

Frontal release signs are primitive reflexes seen in disorders that affect the frontal lobes, such as dementias, metabolic encephalopathies, closed head injuries, and hydrocephalus. All of these disorders produce diffuse cerebral damage, usually involving many areas and systems in addition to the frontal lobes and pyramidal system, so the frontal release signs are not sufficient for a diagnosis.

Some frontal release signs:
 * Palmar grasp
 * Palmomental reflex
 * Rooting reflex
 * Snout reflex
 * Glabellar reflex