There are 486 questions on various topics in Neurology in the FrontalCortex neurology question bank.

Primitive Reflexes - The Hand Grasp Reflex

Last updated on Thursday, December 9 2010 by freeman45

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HAND GRASP REFLEX

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Test: The hand grasp reflex occurs when pressure is applied to the infant's palm.  In the video, you can see the examiner's finger press on the palm of the infant.

Normal response: The infant's fingers will flex, or grasp the examiner's finger.

Appears: 28 weeks, peaks at 32 weeks

Disappears: 2-3 months

Abnormal persistence: >6 months

Abnormalities:
As in the foot grasp reflex, abnormalities of the CNS or PNS can result in an abnormal palmar grasp reflex.  This abnormality is not associated to a single specific disease.

 

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