A theoretical model of phase transitions in the human brain |
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| Authors: | V K Jirsa R Friedrich H Haken J A S Kelso |
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| Institution: | (1) Institute for Theoretical Physics and Synergetics, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany, DE;(2) Center for Complex Systems, Florida Atlantic University, Boca Raton, FL 33431, USA, US |
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| Abstract: | An experiment using a multisensor SQUID (superconducting quantum interference device) array was performed by Kelso and colleagues
(1992) which combined information from three different sources: perception, motor response, and brain signals. When an acoustic
stimulus frequency is changed systematically, a spontaneous transition in coordination occurs at a critical frequency in both
motor behavior and brain signals. Qualitatively analogous transitions are known for physical and biological systems such as
changes in the coordination of human hand movements (Kelso 1981, 1984). In this paper we develop a theoretical model based
on methods from the interdisciplinary field of synergetics (Haken 1983, 1987) and nonlinear oscillator theory that reproduces
the main experimental features very well and suggests a formulation of a fundamental biophysical coupling.
Received: 8 September 1993 |
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