Involvement of the sensorimotor cortex in physiological force and action tremor

被引:39
作者
Marsden, JF
Brown, P
Salenius, S
机构
[1] Inst Neurol, Sobell Dept Neurophysiol, London WC1 3BG, England
[2] Helsinki Univ Technol, Low Temp Lab, Brain Res Unit, FIN-02015 Espoo, Finland
关键词
action tremor; coherence; physiological tremor; sensorimotor cortex;
D O I
10.1097/00001756-200107030-00033
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Whole scalp magnetoencephalography (MEG) signals were recorded in 10 healthy subjects simultaneously with the surface electromyogram (EMG) of the contralateral forearm extensor muscles during isometric contraction and phasic movement of the wrist, in eight subjects, coherence and time domain analyses demonstrated correspondence between the MEG signal, originating near or in the hand region of the motor cortex, and the 6-12 Hz EMG recorded during isometric postural contractions. in contrast, we found little evidence for correspondence between the contralateral EMG and the MEG recorded over the Rolandic region during phasic movements. We conclude that the sensorimotor cortex is differentially involved in physiological force and action tremor at the wrist. NeuroReport 12:1937-1941 (C) 2001 Lippincott Williams & Wilkins.
引用
收藏
页码:1937 / 1941
页数:5
相关论文
共 27 条
[1]   On the existence of different alpha band rhythms in the hand area of man [J].
Andrew, C ;
Pfurtscheller, G .
NEUROSCIENCE LETTERS, 1997, 222 (02) :103-106
[2]   Cortical drives to human muscle: the Piper and related rhythms [J].
Brown, P .
PROGRESS IN NEUROBIOLOGY, 2000, 60 (01) :97-108
[3]   Cortical correlate of the piper rhythm in humans [J].
Brown, P ;
Salenius, S ;
Rothwell, JC ;
Hari, R .
JOURNAL OF NEUROPHYSIOLOGY, 1998, 80 (06) :2911-2917
[4]  
Conway BA, 1995, ALPHA AND GAMMA MOTOR SYSTEMS, P596
[5]   Synchronization between motor cortex and spinal motoneuronal pool during the performance of a maintained motor task in man [J].
Conway, BA ;
Halliday, DM ;
Farmer, SF ;
Shahani, U ;
Maas, P ;
Weir, AI ;
Rosenberg, JR .
JOURNAL OF PHYSIOLOGY-LONDON, 1995, 489 (03) :917-924
[6]   ESSENTIAL TREMOR ENTRAINS RAPID VOLUNTARY MOVEMENTS [J].
ELBLE, RJ ;
HIGGINS, C ;
HUGHES, L .
EXPERIMENTAL NEUROLOGY, 1994, 126 (01) :138-143
[7]   MOTOR-UNIT ACTIVITY RESPONSIBLE FOR 8-HZ TO 12-HZ COMPONENT OF HUMAN PHYSIOLOGICAL FINGER TREMOR [J].
ELBLE, RJ ;
RANDALL, JE .
JOURNAL OF NEUROPHYSIOLOGY, 1976, 39 (02) :370-383
[8]   Rhythmicity, synchronization and binding in human and primate motor systems [J].
Farmer, SF .
JOURNAL OF PHYSIOLOGY-LONDON, 1998, 509 (01) :3-14
[9]   A framework for the analysis of mixed time series/point process data - Theory and application to the study of physiological tremor, single motor unit discharges and electromyograms [J].
Halliday, DM ;
Rosenberg, JR ;
Amjad, AM ;
Breeze, P ;
Conway, BA ;
Farmer, SF .
PROGRESS IN BIOPHYSICS & MOLECULAR BIOLOGY, 1995, 64 (2-3) :237-278
[10]   MAGNETOENCEPHALOGRAPHY - THEORY, INSTRUMENTATION, AND APPLICATIONS TO NONINVASIVE STUDIES OF THE WORKING HUMAN BRAIN [J].
HAMALAINEN, M ;
HARI, R ;
ILMONIEMI, RJ ;
KNUUTILA, J ;
LOUNASMAA, OV .
REVIEWS OF MODERN PHYSICS, 1993, 65 (02) :413-497