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lüll The labile brain II Transients, complexity and selection Friston KJPhilos Trans R Soc Lond B Biol Sci 2000[Feb]; 355 (1394): 237-52The successive expression of neuronal transients is related to dynamic correlations and, as shown in this paper, to dynamic instability. Dynamic instability is a form of complexity, typical of neuronal systems, which may be crucial for adaptive brain function from two perspectives. The first is from the point of view of neuronal selection and self-organizing systems: if selective mechanisms underpin the emergence of adaptive neuronal responses then dynamic instability is, itself, necessarily adaptive. This is because dynamic instability is the source of diversity on which selection acts and is therefore subject to selective pressure. In short, the emergence of order, through selection, depends almost paradoxically on the instabilities that characterize the diversity of brain dynamics. The second perspective is provided by information theory.|*Information Theory[MESH]|*Models, Neurological[MESH]|Brain/cytology/*physiology[MESH]|Humans[MESH]|Neurons/*physiology[MESH] |