Three hands:: fragmentation of human bodily awareness

被引:64
作者
Hari, R
Hänninen, R
Mäkinen, T
Jousmäki, V
Forss, N
Seppä, M
Salonen, O
机构
[1] Aalto Univ, Low Temp Lab, Brain Res Unit, FIN-02015 Espoo, Finland
[2] Cent Hosp Cent Finland, Dept Neurol, FIN-40620 Jyvaskyla, Finland
[3] Univ Helsinki, Cent Hosp, Dept Clin Neurosci, FIN-00290 Helsinki, Finland
[4] Univ Helsinki, Cent Hosp, Dept Radiol, FIN-00290 Helsinki, Finland
基金
芬兰科学院;
关键词
body image; bodily awareness; anterior supplementary motor area; corpus callosum; secondary somatosensory cortex; magnetoencephalography;
D O I
10.1016/S0304-3940(97)00945-2
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
We describe patient E.P. who occasionally perceives a 'ghost' hand which copies the previous positions of the left hand with a 0.5-1 min time lag, but follows the movement patterns of the right hand. The symptoms started after an operation of a ruptured aneurysm, followed by an infarction of the right frontal robe; E.P. also has a previously lesioned corpus callosum. Neuromagnetic recordings revealed that activity of the left secondary somatosensory cortex was strongly suppressed during the ghost arm percept, thereby providing an objective correlate for E.P.'s sensations. We conclude that simultaneous mental contents about body scheme may be based on neural information extracted at considerably different times, resulting in fragmentation of bodily awareness. (C) 1998 Elsevier Science Ireland Ltd.
引用
收藏
页码:131 / 134
页数:4
相关论文
共 16 条
[1]   122-CHANNEL SQUID INSTRUMENT FOR INVESTIGATING THE MAGNETIC SIGNALS FROM THE HUMAN BRAIN [J].
AHONEN, AI ;
HAMALAINEN, MS ;
KAJOLA, MJ ;
KNUUTILA, JET ;
LAINE, PP ;
LOUNASMAA, OV ;
PARKKONEN, LT ;
SIMOLA, JT ;
TESCHE, CD .
PHYSICA SCRIPTA, 1993, T49A :198-205
[2]  
[Anonymous], 1954, JAMA-J AM MED ASSOC
[3]   THE ALIEN HAND SYNDROME - CLINICAL AND POSTMORTEM FINDINGS [J].
BANKS, G ;
SHORT, P ;
MARTINEZ, AJ ;
LATCHAW, R ;
RATCLIFF, G ;
BOLLER, F .
ARCHIVES OF NEUROLOGY, 1989, 46 (04) :456-459
[4]   MEDIAL FRONTAL-CORTEX INFARCTION AND THE ALIEN HAND SIGN [J].
GOLDBERG, G ;
MAYER, NH ;
TOGLIA, JU .
ARCHIVES OF NEUROLOGY, 1981, 38 (11) :683-686
[5]   Functional anatomy of pointing and grasping in humans [J].
Grafton, ST ;
Fagg, AH ;
Woods, RP ;
Arbib, MA .
CEREBRAL CORTEX, 1996, 6 (02) :226-237
[6]   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
[7]  
HANNINEN R, 1996, 8 WORLD C IOP TAMP F, P131
[8]   SEPARATE FINGER REPRESENTATIONS AT THE HUMAN 2ND SOMATOSENSORY CORTEX [J].
HARI, R ;
HAMALAINEN, H ;
HAMALAINEN, M ;
KEKONI, J ;
SAMS, M ;
TIIHONEN, J .
NEUROSCIENCE, 1990, 37 (01) :245-249
[9]   FUNCTIONAL-ORGANIZATION OF THE HUMAN 1ST AND 2ND SOMATOSENSORY CORTICES - A NEUROMAGNETIC STUDY [J].
HARI, R ;
KARHU, J ;
HAMALAINEN, M ;
KNUUTILA, J ;
SALONEN, O ;
SAMS, M ;
VILKMAN, V .
EUROPEAN JOURNAL OF NEUROSCIENCE, 1993, 5 (06) :724-734
[10]  
Hyvarinen J, 1982, PARIETAL CORTEX MONK