LATE PAIN-RELATED MAGNETIC-FIELDS AND ELECTRIC POTENTIALS-EVOKED BY INTRACUTANEOUS ELECTRIC FINGER STIMULATION

被引：35

作者：

JOSEPH, J

HOWLAND, EW

WAKAI, R

BACKONJA, M

BAFFA, O

POTENTI, FM

CLEELAND, CS

机构：

[1] UNIV WISCONSIN,DEPT MED PHYS,BIOMAGNET RES LAB,MADISON,WI 53706

[2] UNIV WISCONSIN,DEPT NEUROL,PAIN RES GRP,MADISON,WI 53706

[3] MIDDLETON VET HOSP,DEPT NEUROL,MIDDLETON,WI 53705

[4] UNIV SAO PAULO,FFCLRP,SETOR FIS,BR-14049 RIBEIRAO PRETO,SP,BRAZIL

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1991年 / 80卷 / 01期

关键词：

MAGNETOENCEPHALOGRAPHY; EVOKED FIELD; EVOKED POTENTIAL; PAIN; SOMATOSENSORY; FRONTAL OPERCULUM; INTRACUTANEOUS ELECTRIC STIMULATION;

D O I：

10.1016/0168-5597(91)90042-V

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Surface magnetic and electric recordings were used to localize the sources of late pain-related magnetic fields and electric potentials, evoked by painful intracutaneous electric finger stimulation. We find that the source of the P90m component of the evoked magnetic field lies in the finger area of the primary somatosensory cortex; the sources of the N150m and P250m are found to reside in the frontal operculum. These findings are unexpected from the evoked electric potential data, which suggest a central location for these sources. We also note that the interpretation of the electric data was confounded by the presence of an alpha-like oscillation, which overlapped many components of the evoked potential.

引用

页码：46 / 52

页数：7

共 21 条

[1] MAGNETIC LOCALIZATION OF A DIPOLAR CURRENT SOURCE IMPLANTED IN A SPHERE AND A HUMAN CRANIUM [J].