Far-field recording of the junctional potential generated by median nerve volleys at the wrist

Jun Kimura, Tetsuro Ishida, Shoji Suzuki, Yutaka Kudo, Hiroo Matsuoka, Thoru Yamada

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In 20 arms from 10 healthy subjects, the orthodromic median sensory volleys crossing the wrist gave rise to a stationary, biphasic potential rendering the forearm initially positive (Pw) and subsequently negative (Nw) compared with the hand. A pair of electrodes located on each side of the wrist best detected the junctional potential, Pw-Nw, that developed across the partition. Here the hand and the forearm each, in effect, acted as a lead, connecting any points within the respective compartment to the voltage source. Thus, nearly the same potential difference appeared across the wrist regardless of the inter-electrode distance, allowing the detection of the voltage step in far-field derivation. Our data verify that not only positive but also negative peaks of scalp-recorded evoked responses could represent junctional potentials generated along the course of the conduction medium in the absence of fixed neural discharges.

Original languageEnglish
Pages (from-to)1451-1457
Number of pages7
JournalNeurology
Volume36
Issue number11
DOIs
Publication statusPublished - 1986 Nov

ASJC Scopus subject areas

  • Clinical Neurology

Fingerprint Dive into the research topics of 'Far-field recording of the junctional potential generated by median nerve volleys at the wrist'. Together they form a unique fingerprint.

  • Cite this

    Kimura, J., Ishida, T., Suzuki, S., Kudo, Y., Matsuoka, H., & Yamada, T. (1986). Far-field recording of the junctional potential generated by median nerve volleys at the wrist. Neurology, 36(11), 1451-1457. https://doi.org/10.1212/wnl.36.11.1451