Faculty Collaboration Database

Development of a model of the premotor potential. Arch Phys Med Rehabil 1994 May;75(5):493-7

Date

05/01/1994

Pubmed ID

8185439

Scopus ID

2-s2.0-0028284277 (requires institutional sign-in at Scopus site)   5 Citations

Abstract

This study explored the sensory nature of the small negative premotor potential (PMP) that is often seen preceding the compound muscle action potential. We developed a model of the PMP, using the ulnar and superficial radial sensory (SRS) nerves. Standard conduction studies of the deep ulnar motor nerve recording over the first dorsal interosseous manus (FDIM) and of the SRS nerve recording over the same site were done separately, then simultaneously, on 20 normal hands. In all subjects, there was no FDIM PMP, but with simultaneous stimulation of both nerves, there was a potential in all subjects that appeared similar to their median thenar and ulnar hypothenar PMPs. Reference data for the median thenar, ulnar hypothenar, and model PMP were generated. Findings from this study are discussed and appear to support the concept of the PMP being either a sensory potential or a junctional potential.

Author List

Del Toro DR, Park TA, Wertsch JJ

Author

David R. Del Toro MD Professor in the Physical Medicine and Rehabilitation department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Action Potentials
Adult
Electromyography
Evoked Potentials, Somatosensory
Female
Hand
Humans
Male
Median Nerve
Models, Neurological
Neural Conduction
Peripheral Nerves
Radial Nerve
Ulnar Nerve