Facilitation of Aδ-fiber-mediated acute pain by repetitive transcranial magnetic stimulation
Identifieur interne : 000A31 ( Pascal/Corpus ); précédent : 000A30; suivant : 000A32Facilitation of Aδ-fiber-mediated acute pain by repetitive transcranial magnetic stimulation
Auteurs : Y. Tamura ; M. Hoshiyama ; K. Inui ; H. Nakata ; Y. Qiu ; Y. Ugawa ; K. Inoue ; R. KakigiSource :
- Neurology [ 0028-3878 ] ; 2004.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Background: Repetitive transcranial magnetic stimulation (rTMS) of the motor cortex modulates acute and chronic pain perception. The authors previously showed that rTMS over the primary motor cortex (M1) inhibited capsaicin-induced acute pain ascending through C-fibers. Objective: To investigate the effects of 1-Hz rTMS over Ml on acute experimentally induced pain mediated by AS-fibers (i.e., another type of acute pain). Methods: The authors examined whether rTMS over M1 affected laser evoked potentials (LEPs) in 13 normal subjects using thulium: yttrium-aluminum-garnet laser stimulation. Subjective pain-rating scores and LEPs obtained under three different conditions-rTMS, realistic sham stimulation, and a control condition with no stimulation-were compared. Results: The authors found that 1-Hz rTMS over Ml significantly aggravated the subjective pain and enhanced the N2-P2 amplitudes compared with the sham or control sessions. Because the pain-rating scores and the N2-P2 amplitudes correlated positively, the N2-P2 amplitudes in the present study can be regarded as the cortical correlate of subjective pain. Conclusions: Together with the authors' previous study on C-fiber pain, this facilitatory effect of repetitive transcranial magnetic stimulation on AS-fiber-mediated further strengthens the notion of a relationship between repetitive transcranial magnetic stimulation over Ml and pain perception.
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Format Inist (serveur)
NO : | PASCAL 04-0380392 INIST |
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ET : | Facilitation of Aδ-fiber-mediated acute pain by repetitive transcranial magnetic stimulation |
AU : | TAMURA (Y.); HOSHIYAMA (M.); INUI ( K.); NAKATA (H.); QIU (Y.); UGAWA (Y.); INOUE ( K.); KAKIGI (R.) |
AF : | Department of Integrative Physiology, National Institute for Physiological Sciences/Okazaki/Japon (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 8 aut.); Department of Neurology, Jikei University School of Medicine/Tokyo/Japon (1 aut., 7 aut.); Department of Health Sciences, Faculty of Medicine, Nagoya University/Japon (2 aut.); Department of Neurology, Division of Neuroscience, Graduate School of Medicine, University of Tokyo/Japon (6 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Neurology; ISSN 0028-3878; Coden NEURAI; Etats-Unis; Da. 2004; Vol. 62; No. 12; Pp. 2176-2181; Bibl. 45 ref. |
LA : | Anglais |
EA : | Background: Repetitive transcranial magnetic stimulation (rTMS) of the motor cortex modulates acute and chronic pain perception. The authors previously showed that rTMS over the primary motor cortex (M1) inhibited capsaicin-induced acute pain ascending through C-fibers. Objective: To investigate the effects of 1-Hz rTMS over Ml on acute experimentally induced pain mediated by AS-fibers (i.e., another type of acute pain). Methods: The authors examined whether rTMS over M1 affected laser evoked potentials (LEPs) in 13 normal subjects using thulium: yttrium-aluminum-garnet laser stimulation. Subjective pain-rating scores and LEPs obtained under three different conditions-rTMS, realistic sham stimulation, and a control condition with no stimulation-were compared. Results: The authors found that 1-Hz rTMS over Ml significantly aggravated the subjective pain and enhanced the N2-P2 amplitudes compared with the sham or control sessions. Because the pain-rating scores and the N2-P2 amplitudes correlated positively, the N2-P2 amplitudes in the present study can be regarded as the cortical correlate of subjective pain. Conclusions: Together with the authors' previous study on C-fiber pain, this facilitatory effect of repetitive transcranial magnetic stimulation on AS-fiber-mediated further strengthens the notion of a relationship between repetitive transcranial magnetic stimulation over Ml and pain perception. |
CC : | 002B17 |
FD : | Système nerveux pathologie; Facilitation; Douleur; Aigu; Stimulus magnétique |
ED : | Nervous system diseases; Facilitation; Pain; Acute; Magnetic stimulus |
SD : | Sistema nervioso patología; Facilitación; Dolor; Agudo; Estímulo magnético |
LO : | INIST-6345.354000112075380070 |
ID : | 04-0380392 |
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<front><div type="abstract" xml:lang="en">Background: Repetitive transcranial magnetic stimulation (rTMS) of the motor cortex modulates acute and chronic pain perception. The authors previously showed that rTMS over the primary motor cortex (M1) inhibited capsaicin-induced acute pain ascending through C-fibers. Objective: To investigate the effects of 1-Hz rTMS over Ml on acute experimentally induced pain mediated by AS-fibers (i.e., another type of acute pain). Methods: The authors examined whether rTMS over M1 affected laser evoked potentials (LEPs) in 13 normal subjects using thulium: yttrium-aluminum-garnet laser stimulation. Subjective pain-rating scores and LEPs obtained under three different conditions-rTMS, realistic sham stimulation, and a control condition with no stimulation-were compared. Results: The authors found that 1-Hz rTMS over Ml significantly aggravated the subjective pain and enhanced the N2-P2 amplitudes compared with the sham or control sessions. Because the pain-rating scores and the N2-P2 amplitudes correlated positively, the N2-P2 amplitudes in the present study can be regarded as the cortical correlate of subjective pain. Conclusions: Together with the authors' previous study on C-fiber pain, this facilitatory effect of repetitive transcranial magnetic stimulation on AS-fiber-mediated further strengthens the notion of a relationship between repetitive transcranial magnetic stimulation over Ml and pain perception.</div>
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<ET>Facilitation of Aδ-fiber-mediated acute pain by repetitive transcranial magnetic stimulation</ET>
<AU>TAMURA (Y.); HOSHIYAMA (M.); INUI ( K.); NAKATA (H.); QIU (Y.); UGAWA (Y.); INOUE ( K.); KAKIGI (R.)</AU>
<AF>Department of Integrative Physiology, National Institute for Physiological Sciences/Okazaki/Japon (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 8 aut.); Department of Neurology, Jikei University School of Medicine/Tokyo/Japon (1 aut., 7 aut.); Department of Health Sciences, Faculty of Medicine, Nagoya University/Japon (2 aut.); Department of Neurology, Division of Neuroscience, Graduate School of Medicine, University of Tokyo/Japon (6 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Neurology; ISSN 0028-3878; Coden NEURAI; Etats-Unis; Da. 2004; Vol. 62; No. 12; Pp. 2176-2181; Bibl. 45 ref.</SO>
<LA>Anglais</LA>
<EA>Background: Repetitive transcranial magnetic stimulation (rTMS) of the motor cortex modulates acute and chronic pain perception. The authors previously showed that rTMS over the primary motor cortex (M1) inhibited capsaicin-induced acute pain ascending through C-fibers. Objective: To investigate the effects of 1-Hz rTMS over Ml on acute experimentally induced pain mediated by AS-fibers (i.e., another type of acute pain). Methods: The authors examined whether rTMS over M1 affected laser evoked potentials (LEPs) in 13 normal subjects using thulium: yttrium-aluminum-garnet laser stimulation. Subjective pain-rating scores and LEPs obtained under three different conditions-rTMS, realistic sham stimulation, and a control condition with no stimulation-were compared. Results: The authors found that 1-Hz rTMS over Ml significantly aggravated the subjective pain and enhanced the N2-P2 amplitudes compared with the sham or control sessions. Because the pain-rating scores and the N2-P2 amplitudes correlated positively, the N2-P2 amplitudes in the present study can be regarded as the cortical correlate of subjective pain. Conclusions: Together with the authors' previous study on C-fiber pain, this facilitatory effect of repetitive transcranial magnetic stimulation on AS-fiber-mediated further strengthens the notion of a relationship between repetitive transcranial magnetic stimulation over Ml and pain perception.</EA>
<CC>002B17</CC>
<FD>Système nerveux pathologie; Facilitation; Douleur; Aigu; Stimulus magnétique</FD>
<ED>Nervous system diseases; Facilitation; Pain; Acute; Magnetic stimulus</ED>
<SD>Sistema nervioso patología; Facilitación; Dolor; Agudo; Estímulo magnético</SD>
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<ID>04-0380392</ID>
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