Reflex variability in selective dorsal rhizotomy.

I P Weiss; S J Schiff

doi:10.3171/jns.1993.79.3.0346

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Reflex variability in selective dorsal rhizotomy.

I P Weiss·S J Schiff

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Abstract

The variability of reflex responses during selective dorsal rhizotomy was studied in eight children between the ages of 3 and 7 years. For a given dorsal root or rootlet, the electrical reflex threshold and response varied considerably when observed over several minutes. Changes in electrode pressure, mechanical dissection of the root, and reflex spatial facilitation were all found to contribute to the variability. Even when electrode pressure was held constant, intrinsic spinal cord reflex variability substantially weakened the predictability of the intraoperative selection method used during this surgery.

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Child Child, Preschool Differential Threshold Dissection Electric Stimulation Electrophysiology Humans Intraoperative Period Neural Inhibition Pressure Reflex Spinal Cord Spinal Nerve Roots Time Factors Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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I P Weiss, S J Schiff. 1993. Reflex variability in selective dorsal rhizotomy.. https://doi.org/10.3171/jns.1993.79.3.0346

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