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Titolo:
EFFECTS OF NOXIOUS COOLING OF THE SKIN ON PAIN PERCEPTION IN MAN
Autore:
WATANABE S; KAKIGI R; HOSHIYAMA M; KITAMURA Y; KOYAMA S; SHIMOJO M;
Indirizzi:
NATL INST PHYSIOL SCI,DEPT INTEGRAT PHYSIOL OKAZAKI AICHI 444 JAPAN
Titolo Testata:
Journal of the neurological sciences
fascicolo: 1, volume: 135, anno: 1996,
pagine: 68 - 73
SICI:
0022-510X(1996)135:1<68:EONCOT>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOMATOSENSORY-EVOKED-POTENTIALS; HETEROTOPIC NOCICEPTIVE STIMULI; INHIBITORY CONTROLS DNICS; PERIPHERAL NEUROPATHIES; CO2-LASER STIMULATION; CONDUCTION-VELOCITY; CONVERGENT NEURONS; SUPRASPINAL LOOP; HUMANS; INVOLVEMENT;
Keywords:
COOLING; CO2 LASER; PAIN RELIEF; EVOKED POTENTIAL; DIFFUSE NOXIOUS INHIBITORY CONTROL; GATE CONTROL THEORY; FIRST PAIN; 2ND PAIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
S. Watanabe et al., "EFFECTS OF NOXIOUS COOLING OF THE SKIN ON PAIN PERCEPTION IN MAN", Journal of the neurological sciences, 135(1), 1996, pp. 68-73

Abstract

By means of somatosensory evoked brain potentials following painful CO2 laser stimulation (pain SEPs) and a pain visual analogue scale (VAS), we investigated changes in pain perception caused by noxious cooling of the skin in normal subjects. Pain SEPs were recorded from scalp electrodes following laser stimulation applied to the leg under variousconditions as follows: (1) control (without any interference); (2) 46degrees C foot (dipping the foot ipsilateral to the stimulated leg inhot water at 46 degrees C); (3) 0 degrees C foot (dipping the foot ipsilateral to the stimulated leg in ice water at 0 degrees C); and (4) 0 degrees C hand (dipping the hand contralateral to the stimulated legin ice water at 0 degrees C). Marked decreases in amplitude of pain SEPs and VAS were observed under all conditions as compared with the control (P < 0.001); the degree of pain relief was significantly correlated with changes in pain SEPs. These changes were greatest in the '0 degrees C hand' condition, followed in decreasing order by '0 degrees Cfoot' and '46 degrees C foot', and there was a significant differencebetween '0 degrees C hand' and the '46 degrees C foot' condition. We considered that the decrease in pain is due to the diffuse noxious inhibitory control (DNIC). The reason why the degree of pain relief in '0degrees C foot' condition was less than that in '0 degrees C hand' condition is unclear, but some particular spatial summation of two kindsof nociceptive impulses mediated by the same pathway might take place.

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Documento generato il 15/07/20 alle ore 06:57:37