reflexes

reflexes - Infant Reflexes Issues with early infant...

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1 Infant Reflexes Issues with early infant mobility • Shape and proportions of newborns not conducive to easy mobility and reflexes are therefore needed for survival. – Heads too large; limbs short in relation to body – High fat to muscle ratio Reflexes Stereotyped involuntary reactions produced by the body in response to a specific external stimuli . • Evident in infants, neonates, and fetuses • Activated from changes in pressure, sight, sound and tactile stimulation
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2 Reflexive vs. Spontaneous • Spontaneous – Random movements that are not caused by any known external stimuli Infant vs. Lifespan Reflexes • Most “infant” reflexes do not last beyond the first year • Reflexes that endure are called “lifespan” reflexes – Knee-jerk reflex – Flexor-withdrawal reflex Built-in responses that facilitate survival Open dialogue with environment Reflexive movements result in sensory consequences Provide building blocks for future movement
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3 Reflexes used as a CNS diagnostic tool • Cerebral Palsy – Preservation of Asymmetric Tonic Neck reflex • Brain injury at birth – Lacking or asymmetrical response of Moro reflex Factors associated with neurological dysfunction Preservation Absence Unequal bilateral response Not conforming to relative amplitude of
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reflexes - Infant Reflexes Issues with early infant...

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