Generation of far field potentials from the trigeminal nerve in the cat

Yasuhiko Ajimi, Takayuki Oohira, Takeshi Kawase, Moriichiro Takase

Research output: Contribution to journalArticle

Abstract

This study provides evidence that far field potentials (FFPs) are generated from the trigeminal nerve in the cat. By stimulating the main mental nerve, three components (component 1, 0.59 ± 0.06 ms; component 2, 0.81 ± 0.06 ms; and component 3, 0.98 ± 0.07 ms) were identified from surface electrodes. These three components were thought to be positive and negative FFPs because each component had a stationary peak and was distributed on the head being divided into positive and negative fields. Results of a study of lesions and recording compound action potentials (CAPs) defined the neural origins of those potentials as follows: component 1, the mandibular nerve at the mandibular foramen; component 2, the mandibular nerve at the foramen ovale; and component 3, somewhere between the gasserian ganglion and the trigeminal root. The amplitude of component 2 decreased when the mandibular nerve at the foramen ovale was immersed in cerebrospinal fluid (CSF) after opening the foramen and recovered to the prior level after closing the foramen with beeswax. We concluded that this transformation resulted in the change in electrical resistance of the volume conductor around the nerve.

Original languageEnglish
Pages (from-to)92-100
Number of pages9
JournalElectroencephalography and Clinical Neurophysiology - Evoked Potentials
Volume108
Issue number1
DOIs
Publication statusPublished - 1998 Jan

Fingerprint

Mandibular Nerve
Trigeminal Nerve
Foramen Ovale
Cats
Trigeminal Ganglion
Electric Impedance
Action Potentials
Cerebrospinal Fluid
Electrodes
Head

Keywords

  • Far field potentials
  • Mandibular nerve
  • Neural origins
  • Trigeminal nerve

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Generation of far field potentials from the trigeminal nerve in the cat. / Ajimi, Yasuhiko; Oohira, Takayuki; Kawase, Takeshi; Takase, Moriichiro.

In: Electroencephalography and Clinical Neurophysiology - Evoked Potentials, Vol. 108, No. 1, 01.1998, p. 92-100.

Research output: Contribution to journalArticle

@article{8b89ce0fc92a43a096c41aad088df6fc,
title = "Generation of far field potentials from the trigeminal nerve in the cat",
abstract = "This study provides evidence that far field potentials (FFPs) are generated from the trigeminal nerve in the cat. By stimulating the main mental nerve, three components (component 1, 0.59 ± 0.06 ms; component 2, 0.81 ± 0.06 ms; and component 3, 0.98 ± 0.07 ms) were identified from surface electrodes. These three components were thought to be positive and negative FFPs because each component had a stationary peak and was distributed on the head being divided into positive and negative fields. Results of a study of lesions and recording compound action potentials (CAPs) defined the neural origins of those potentials as follows: component 1, the mandibular nerve at the mandibular foramen; component 2, the mandibular nerve at the foramen ovale; and component 3, somewhere between the gasserian ganglion and the trigeminal root. The amplitude of component 2 decreased when the mandibular nerve at the foramen ovale was immersed in cerebrospinal fluid (CSF) after opening the foramen and recovered to the prior level after closing the foramen with beeswax. We concluded that this transformation resulted in the change in electrical resistance of the volume conductor around the nerve.",
keywords = "Far field potentials, Mandibular nerve, Neural origins, Trigeminal nerve",
author = "Yasuhiko Ajimi and Takayuki Oohira and Takeshi Kawase and Moriichiro Takase",
year = "1998",
month = "1",
doi = "10.1016/S0168-5597(97)00094-4",
language = "English",
volume = "108",
pages = "92--100",
journal = "Electroencephalography and Clinical Neurophysiology - Evoked Potentials",
issn = "0168-5597",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Generation of far field potentials from the trigeminal nerve in the cat

AU - Ajimi, Yasuhiko

AU - Oohira, Takayuki

AU - Kawase, Takeshi

AU - Takase, Moriichiro

PY - 1998/1

Y1 - 1998/1

N2 - This study provides evidence that far field potentials (FFPs) are generated from the trigeminal nerve in the cat. By stimulating the main mental nerve, three components (component 1, 0.59 ± 0.06 ms; component 2, 0.81 ± 0.06 ms; and component 3, 0.98 ± 0.07 ms) were identified from surface electrodes. These three components were thought to be positive and negative FFPs because each component had a stationary peak and was distributed on the head being divided into positive and negative fields. Results of a study of lesions and recording compound action potentials (CAPs) defined the neural origins of those potentials as follows: component 1, the mandibular nerve at the mandibular foramen; component 2, the mandibular nerve at the foramen ovale; and component 3, somewhere between the gasserian ganglion and the trigeminal root. The amplitude of component 2 decreased when the mandibular nerve at the foramen ovale was immersed in cerebrospinal fluid (CSF) after opening the foramen and recovered to the prior level after closing the foramen with beeswax. We concluded that this transformation resulted in the change in electrical resistance of the volume conductor around the nerve.

AB - This study provides evidence that far field potentials (FFPs) are generated from the trigeminal nerve in the cat. By stimulating the main mental nerve, three components (component 1, 0.59 ± 0.06 ms; component 2, 0.81 ± 0.06 ms; and component 3, 0.98 ± 0.07 ms) were identified from surface electrodes. These three components were thought to be positive and negative FFPs because each component had a stationary peak and was distributed on the head being divided into positive and negative fields. Results of a study of lesions and recording compound action potentials (CAPs) defined the neural origins of those potentials as follows: component 1, the mandibular nerve at the mandibular foramen; component 2, the mandibular nerve at the foramen ovale; and component 3, somewhere between the gasserian ganglion and the trigeminal root. The amplitude of component 2 decreased when the mandibular nerve at the foramen ovale was immersed in cerebrospinal fluid (CSF) after opening the foramen and recovered to the prior level after closing the foramen with beeswax. We concluded that this transformation resulted in the change in electrical resistance of the volume conductor around the nerve.

KW - Far field potentials

KW - Mandibular nerve

KW - Neural origins

KW - Trigeminal nerve

UR - http://www.scopus.com/inward/record.url?scp=0031934180&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031934180&partnerID=8YFLogxK

U2 - 10.1016/S0168-5597(97)00094-4

DO - 10.1016/S0168-5597(97)00094-4

M3 - Article

C2 - 9474066

AN - SCOPUS:0031934180

VL - 108

SP - 92

EP - 100

JO - Electroencephalography and Clinical Neurophysiology - Evoked Potentials

JF - Electroencephalography and Clinical Neurophysiology - Evoked Potentials

SN - 0168-5597

IS - 1

ER -