| 释义 |
primitive reflex primitive reflexany of various simple, stereotypic, automatic neuromuscular responses characteristic of the mature fetus and newborn but typically inhibited during the first year of life; primitive reflexes are directed by brainstem centers and include the startle (Moro), rooting, and tonic neck reflexes; abnormal persistence can lead to clumsiness, incoordination, and perceptual difficulties.prim·i·tive re·flex (prim-i'tiv rē'fleks) Any of a group of reflexes seen during gestation and infancy that typically become integrated by an early age (most by 6 months); also seen in adults who have sustained an injury or acquired a disease of the central nervous system. |