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May 1961

Extensor Responses in Central Paresis of Lower Extremity

Arch Neurol. 1961;4(5):555-558. doi:10.1001/archneur.1961.00450110085008

The problem as to the degree of correspondence between the intensity of the Babinski sign and the severity of central paresis of the leg was recently raised by one of us (Szapiro6), with citation of certain facts suggesting a divergence between the two. He emphasized, however, that despite this observed divergence, the degree of paresis and the intensity of the Babinski sign were essentially in agreement. He also proposed5 a new technique for the evocation of the Babinski reaction, consisting of a combination of a proprioceptive with the usual exteroceptive stimulus to the sole, viz., firm passive plantar flexion of the second to the fifth toes (proprioceptive) during the cutaneous stimulation of the sole (exteroceptive) (Fig. 1). Electromyographic examination3 revealed an increase in the number and amplitude of the potentials in the extensor hallucis longus. Further, this

Method used for eliciting the plantar response. combined method served

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