PHASE TRANSITIONS IN THE HUMAN BRAIN: SPATIAL MODE DYNAMICS

被引：120
作者：
Fuchs, Armin [1 ,2 ]
Kelso, J. A. Scott [1 ]
Haken, Hermann [1 ,2 ]
机构：
[1] Florida Atlantic Univ, Ctr Complex Syst, Program Complex Syst & Brain Sci, Boca Raton, FL 33431 USA
[2] Univ Stuttgart, Inst Theoret Phys & Synerget, Pfaffenwaldring 57,W-7000 Stuttgart 80, Stuttgart, Germany
来源：
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS | 1992年 / 2卷 / 04期
关键词：
D O I：
10.1142/S0218127492000537
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Pattern formation and switching between self-organized states are often associated with instabilities in open, nonequilibrium systems. We describe an experiment which shows that systematically changing a control parameter induces qualitative changes in sensorimotor coordination and brain activity, as registered by a 37-SQUID (Superconducting Quantum Interference Device) array. Near the instability point, predicted features of nonequilibrium phase transitions (critical slowing down, fluctuation enhancement) are observed in both the psychophysical data and the brain signals obtained from single SQUID sensors. Further analysis reveals that activity from the entire array displays spatial patterns evolving in time. Such spatiotemporal patterns are characterized by the dynamics of only a few coherent spatial modes.
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页码：917 / 939
页数：23
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