Hemispheric asymmetry of the auditory evoked N100m response in relation to the crossing point between the central sulcus and Sylvian fissure

被引:30
作者
Ohtomo, S
Nakasato, N
Kanno, A
Hatanaka, K
Shirane, R
Mizoi, K
Yoshimoto, T
机构
[1] Tohoku Univ, Sch Med, Dept Neurosurg, Aoba Ku, Sendai, Miyagi 98077, Japan
[2] MEG Lab, Sendai, Miyagi, Japan
[3] Kansai Res Inst, Kyoto, Japan
来源
EVOKED POTENTIALS-ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1998年 / 108卷 / 03期
关键词
auditory evoked response; magnetoencephalography; planum temporale;
D O I
10.1016/S0168-5597(97)00065-8
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The positions of the bilateral N100m sources of the auditory evoked magnetic fields (AEFs) were measured in relation to the central sulcus (CS) using an MRI-linked whole head magnetoencephalography system in 20 right-handed normal male subjects. The location of the N20m source of the median nerve-stimulated somatosensory evoked magnetic fields (SEFs), in the left hemisphere was 3.9 +/- 5.4 mm (mean +/- SD) posterior to that in the right hemisphere (P < 0.005). The crossing point (CP) between the CS and Sylvian fissure in the left hemisphere was 4.3 +/- 4.8 mm posterior to that in the right hemisphere (P < 0.001). The N100m sources were posterior to the CP in both hemispheres. The left hemispheric N100m source was 9.4 +/- 6.4 mm posterior to that on the right (P < 0.0001) in absolute position. The relative distance between CP and the N100m source was 22.7 +/- 8.5 mm in the left hemisphere and 17.7 +/- 5.3 mm in the right hemisphere (P < 0.01). Comparison of positions of the AEF sources and the CS as defined by the SEF demonstrated functional asymmetry of the human temporal lobe and possible source extension of the AEF-N100m beyond the Heschl gyrus over the planum temporale. (C) 1998 Elsevier Science Ireland Ltd.
引用
收藏
页码:219 / 225
页数:7
相关论文
共 43 条
[1]   MORPHOMETRY OF THE SYLVIAN FISSURE AND THE CORPUS-CALLOSUM, WITH EMPHASIS ON SEX-DIFFERENCES [J].
ABOITIZ, F ;
SCHEIBEL, AB ;
ZAIDEL, E .
BRAIN, 1992, 115 :1521-1541
[2]  
[Anonymous], 1954, JAMA-J AM MED ASSOC
[3]   GENDER DIFFERENCES IN SOURCE LOCATION FOR THE N100 AUDITORY EVOKED MAGNETIC-FIELD [J].
BAUMANN, SB ;
ROGERS, RL ;
GUINTO, FC ;
SAYDJARI, CL ;
PAPANICOLAOU, AC ;
EISENBERG, HM .
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1991, 80 (01) :53-59
[4]   AUDITORY CORTICAL AREAS OF MAN [J].
CELESIA, GG ;
PULETTI, F .
NEUROLOGY, 1969, 19 (03) :211-+
[5]  
Cheyne D., 1992, P SATELLITE S NEUROS, P46
[6]   LEFT-RIGHT ASYMMETRIES OF TEMPORAL SPEECH AREAS OF HUMAN FETUS [J].
CHI, JG ;
DOOLING, EC ;
GILLES, FH .
ARCHIVES OF NEUROLOGY, 1977, 34 (06) :346-348
[7]   AUDITORY MAGNETIC-FIELDS FROM THE HUMAN CEREBRAL-CORTEX - LOCATION AND STRENGTH OF AN EQUIVALENT CURRENT DIPOLE [J].
ELBERLING, C ;
BAK, C ;
KOFOED, B ;
LEBECH, J ;
SAERMARK, K .
ACTA NEUROLOGICA SCANDINAVICA, 1982, 65 (06) :553-569
[8]   RIGHT-LEFT ASYMMETRIES IN BRAIN [J].
GALABURDA, AM ;
LEMAY, M ;
KEMPER, TL ;
GESCHWIND, N .
SCIENCE, 1978, 199 (4331) :852-856
[9]   CEREBRAL LATERALIZATION - BIOLOGICAL MECHANISMS, ASSOCIATIONS, AND PATHOLOGY .1. A HYPOTHESIS AND A PROGRAM FOR RESEARCH [J].
GESCHWIND, N ;
GALABURDA, AM .
ARCHIVES OF NEUROLOGY, 1985, 42 (05) :428-459
[10]   HUMAN BRAIN - LEFT-RIGHT ASYMMETRIES IN TEMPORAL SPEECH REGION [J].
GESCHWIND, N ;
LEVITSKY, W .
SCIENCE, 1968, 161 (3837) :186-+