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The spinal evoked response in infants and children

Department of Neurology, State University of New York, Downstate Medical Center, Brooklyn, and the Departments of Pediatrics and Neurology, Jefferson Medical College of Thomas Jefferson University, Philadelphia.

Summated responses to peroneal nerve stimulation were recorded from surface electrodes placed over the spine of 60 infants and children. These potentials generally were greater in amplitude in infants than in older children. Over the cauda equina and rostral cord, initially positive triphasic potentials were recorded. Over the caudal cord, complex potentials were recorded in children less than three years of age. The conduction velocity of the response from midlumbar to lower cervical recording sites was less in infants than in older children and progressively increased with age, reaching adult values after the fourth year.

This work was supported by USPHS research grant No. NS 12039 and by a grant from The National Foundation-March of Dimes.

This paper was read in part at the twenty-fifth annual meeting of the American Academy of Neurology, Boston, April 1973.

Received for publication July 23, 1974.

Dr. Joan Cracco's address is Department of Neurology, Box 35, Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY 11203.

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