Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

Emergent complex neural dynamics

Preprint

Read this article at

Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      A large repertoire of spatiotemporal activity patterns in the brain is the basis for adaptive behaviour. Understanding the mechanism by which the brain's hundred billion neurons and hundred trillion synapses manage to produce such a range of cortical configurations in a flexible manner remains a fundamental problem in neuroscience. One plausible solution is the involvement of universal mechanisms of emergent complex phenomena evident in dynamical systems poised near a critical point of a second-order phase transition. We review recent theoretical and empirical results supporting the notion that the brain is naturally poised near criticality, as well as its implications for better understanding of the brain.

      Related collections

      Most cited references 52

      • Record: found
      • Abstract: not found
      • Article: not found

      Complex brain networks: graph theoretical analysis of structural and functional systems.

      Recent developments in the quantitative analysis of complex networks, based largely on graph theory, have been rapidly translated to studies of brain network organization. The brain's structural and functional systems have features of complex networks--such as small-world topology, highly connected hubs and modularity--both at the whole-brain scale of human neuroimaging and at a cellular scale in non-human animals. In this article, we review studies investigating complex brain networks in diverse experimental modalities (including structural and functional MRI, diffusion tensor imaging, magnetoencephalography and electroencephalography in humans) and provide an accessible introduction to the basic principles of graph theory. We also highlight some of the technical challenges and key questions to be addressed by future developments in this rapidly moving field.
        Bookmark
        • Record: found
        • Abstract: not found
        • Article: not found

        Self-organized criticality: An explanation of the 1/fnoise

          Bookmark
          • Record: found
          • Abstract: not found
          • Article: not found

          Spontaneous fluctuations in brain activity observed with functional magnetic resonance imaging.

          The majority of functional neuroscience studies have focused on the brain's response to a task or stimulus. However, the brain is very active even in the absence of explicit input or output. In this Article we review recent studies examining spontaneous fluctuations in the blood oxygen level dependent (BOLD) signal of functional magnetic resonance imaging as a potentially important and revealing manifestation of spontaneous neuronal activity. Although several challenges remain, these studies have provided insight into the intrinsic functional architecture of the brain, variability in behaviour and potential physiological correlates of neurological and psychiatric disease.
            Bookmark

            Author and article information

            Journal
            12 October 2010
            1010.2530 10.1038/nphys1803

            http://arxiv.org/licenses/nonexclusive-distrib/1.0/

            Custom metadata
            Nature Physics 6, 744-750 (2010)
            q-bio.NC cond-mat.dis-nn physics.bio-ph

            Comments

            Comment on this article