Search results for 'metastability' (try it on Scholar)

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  1.  37
    Andrew A. Fingelkurts & Alexander A. Fingelkurts (2004). Making Complexity Simpler: Multivariability and Metastability in the Brain. International Journal of Neuroscience 114 (7):843 - 862.
    This article provides a retrospective, current and prospective overview on developments in brain research and neuroscience. Both theoretical and empirical studies are considered, with emphasis in the concept of multivariability and metastability in the brain. In this new view on the human brain, the potential multivariability of the neuronal networks appears to be far from continuous in time, but confined by the dynamics of short-term local and global metastable brain states. The article closes by suggesting some of the implications (...)
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  2.  4
    Ulrich Kohlenbach & Pavol Safarik (2014). Fluctuations, Effective Learnability and Metastability in Analysis. Annals of Pure and Applied Logic 165 (1):266-304.
    This paper discusses what kind of quantitative information one can extract under which circumstances from proofs of convergence statements in analysis. We show that from proofs using only a limited amount of the law-of-excluded-middle, one can extract functionals , where L is a learning procedure for a rate of convergence which succeeds after at most B-many mind changes. This -learnability provides quantitative information strictly in between a full rate of convergence and a rate of metastability in the sense of (...)
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  3. Jeremy Avigad & Jose Iovino, Ultraproducts and Metastability.
    Given a convergence theorem in analysis, under very general conditions a model-theoretic compactness argument implies that there is a uniform bound on the rate of metastability. We illustrate with three examples from ergodic theory.
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  4.  3
    Marcello Barison (2015). Identity and Singularity: Metastability and Morphogenesis in Light of Deleuze. Filozofija I Društvo 26 (2):334-350.
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  5.  8
    O. Penrose & Joel L. Lebowitz (1987). Towards a Rigorous Molecular Theory of Metastability. In E. W. Montroll & Joel Louis Lebowitz (eds.), Fluctuation Phenomena. Sole Distributors for the U.S.A. And Canada, Elsevier Science Pub. Co. 7--293.
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  6.  1
    Tsili Doleve-Gandelman & Claude Gandelman (1989). The Metastability of Primitive Artefacts. Semiotica 75 (3-4):191-214.
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  7.  1
    Claude Gandelman (1979). The Metastability of Signs/Metastability as a Sign. Semiotica 28 (1-2).
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  8. Jeremy Avigad & Henry Towsner, Metastability in the Furstenberg-Zimmer Tower.
    According to the Furstenberg-Zimmer structure theorem, every measure-preserving system has a maximal distal factor, and is weak mixing relative to that factor. Furstenberg and Katznelson used this structural analysis of measure-preserving systems to provide a perspicuous proof of Szemer\'edi's theorem. Beleznay and Foreman showed that, in general, the transfinite construction of the maximal distal factor of a separable measure-preserving system can extend arbitrarily far into the countable ordinals. Here we show that the Furstenberg-Katznelson proof does not require the full strength (...)
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  9. A. Attanasi, A. Cavagna & J. Lorenzana (2007). Elasticity and Metastability Limit in Supercooled Liquids: A Lattice Model. Philosophical Magazine 87 (3-5):441-448.
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  10. M. Bauza, N. P. Mandal, A. Ahnood, A. Sazonov & A. Nathan (2009). Light-Induced Metastability in Thin Nanocrystalline Silicon Films. Philosophical Magazine 89 (28-30):2531-2539.
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  11. D. E. Jesson (2003). Solutions of the Fokker-Planck Equation Describing the Metastability of Surface Nanostructure Arrays. Transactions of the Royal Society of South Africa 58 (2):141-144.
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  12.  4
    Christopher T. Kello, Gregory G. Anderson, John G. Holden & Guy C. Van Orden (2008). The Pervasiveness of 1/F Scaling in Speech Reflects the Metastable Basis of Cognition. Cognitive Science 32 (7):1217-1231.
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  13.  82
    Andrew A. Fingelkurts, Alexander A. Fingelkurts & Carlos F. H. Neves (2010). Natural World Physical, Brain Operational, and Mind Phenomenal Space-Time. Physics of Life Reviews 7 (2):195-249.
    Concepts of space and time are widely developed in physics. However, there is a considerable lack of biologically plausible theoretical frameworks that can demonstrate how space and time dimensions are implemented in the activity of the most complex life-system – the brain with a mind. Brain activity is organized both temporally and spatially, thus representing space-time in the brain. Critical analysis of recent research on the space-time organization of the brain’s activity pointed to the existence of so-called operational space-time in (...)
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  14.  76
    Giulio Benedetti, Giorgio Marchetti, Alexander A. Fingelkurts & Andrew A. Fingelkurts (2010). Mind Operational Semantics and Brain Operational Architectonics: A Putative Correspondence. Open Neuroimaging Journal 4:53-69.
    Despite allowing for the unprecedented visualization of brain functional activity, modern neurobio-logical techniques have not yet been able to provide satisfactory answers to important questions about the relationship between brain and mind. The aim of this paper is to show how two different but complementary approaches, Mind Operational Semantics (OS) and Brain Operational Architectonics (OA), can help bridge the gap between a specific kind of mental activity—the higher-order reflective thought or linguistic thought—and brain. The fundamental notion that allows the two (...)
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  15.  37
    Andrew A. Fingelkurts, Alexander A. Fingelkurts, Sergio Bagnato, Cristina Boccagni & Giuseppe Galardi (2012). Toward Operational Architectonics of Consciousness: Basic Evidence From Patients with Severe Cerebral Injuries. Cognitive Processing 13 (2):111-131.
    Although several studies propose that the integrity of neuronal assemblies may underlie a phenomenon referred to as awareness, none of the known studies have explicitly investigated dynamics and functional interactions among neuronal assemblies as a function of consciousness expression. In order to address this question EEG operational architectonics analysis (Fingelkurts and Fingelkurts, 2001, 2008) was conducted in patients in minimally conscious (MCS) and vegetative states (VS) to study the dynamics of neuronal assemblies and operational synchrony among them as a function (...)
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  16.  65
    Andrew A. Fingelkurts & Alexander A. Fingelkurts (2006). Timing in Cognition and EEG Brain Dynamics: Discreteness Versus Continuity. Cognitive Processing 7 (3):135-162.
    This article provides an overview of recent developments in solving the timing problem (discreteness vs. continuity) in cognitive neuroscience. Both theoretical and empirical studies have been considered, with an emphasis on the framework of Operational Architectonics (OA) of brain functioning (Fingelkurts and Fingelkurts, 2001, 2005). This framework explores the temporal structure of information flow and interarea interactions within the network of functional neuronal populations by examining topographic sharp transition processes in the scalp EEG, on the millisecond scale. We conclude, based (...)
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  17.  37
    Andrew A. Fingelkurts & Alexander A. Fingelkurts (2011). Persistent Operational Synchrony Within Brain Default-Mode Network and Self-Processing Operations in Healthy Subjects. Brain and Cognition 75 (2):79-90.
    Based on the theoretical analysis of self-consciousness concepts, we hypothesized that the spatio-temporal pattern of functional connectivity within the default-mode network (DMN) should persist unchanged across a variety of different cognitive tasks or acts, thus being task-unrelated. This supposition is in contrast with current understanding that DMN activated when the subjects are resting and deactivated during any attention-demanding cognitive tasks. To test our proposal, we used, in retrospect, the results from our two early studies ([Fingelkurts, 1998] and [Fingelkurts et al., (...)
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  18.  7
    Thomas Buhrmann & Ezequiel Di Paolo (forthcoming). The Sense of Agency – a Phenomenological Consequence of Enacting Sensorimotor Schemes. Phenomenology and the Cognitive Sciences:1-30.
    The sensorimotor approach to perception addresses various aspects of perceptual experience, but not the subjectivity of intentional action. Conversely, the problem that current accounts of the sense of agency deal with is primarily one of subjectivity. But the proposed models, based on internal signal comparisons, arguably fail to make the transition from subpersonal computations to personal experience. In this paper we suggest an alternative direction towards explaining the sense of agency by braiding three theoretical strands: a world-involving, dynamical interpretation of (...)
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  19.  74
    Andrew A. Fingelkurts & Alexander A. Fingelkurts (2001). Operational Architectonics of the Human Brain Biopotential Field: Toward Solving the Mind-Brain Problem. [REVIEW] Brain and Mind 2 (3):261-296.
    The understanding of the interrelationship between brain and mind remains far from clear. It is well established that the brain's capacity to integrate information from numerous sources forms the basis for cognitive abilities. However, the core unresolved question is how information about the "objective" physical entities of the external world can be integrated, and how unifiedand coherent mental states (or Gestalts) can be established in the internal entities of distributed neuronal systems. The present paper offers a unified methodological and conceptual (...)
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  20.  95
    Andrew A. Fingelkurts, Alexander A. Fingelkurts & Carlos F. H. Neves (2010). Emergentist Monism, Biological Realism, Operations and Brain-Mind Problem. Physics of Life Reviews 7 (2):264-268.
    We would like to thank all the commentators who responded to our target review paper for their thought-provoking ideas and for their initially positive characterization of our theorizing. Our position provoked a broad range of reactions, from enthusiastic support to some kind of opposition. Regardless of the type of the response, one common factor appears to be the plausibility of a presented attempt to apply insights from physics, biology (neuroscience), and phenomenology of mind to form a unified theoretical framework of (...)
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  21.  52
    Andrew A. Fingelkurts & Alexander A. Fingelkurts (2013). Dissipative Many-Body Model and a Nested Operational Architectonics of the Brain. Physics of Life Reviews 10:103-105.
    This paper briefly review a current trend in neuroscience aiming to combine neurophysiological and physical concepts in order to understand the emergence of spatio-temporal patterns within brain activity by which brain constructs knowledge from multiple streams of information. The authors further suggest that the meanings, which subjectively are experienced as thoughts or perceptions can best be described objectively as created and carried by large fields of neural activity within the operational architectonics of brain functioning.
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  22.  55
    Andrew A. Fingelkurts, Alexander A. Fingelkurts & Carlos F. H. Neves (2012). “Machine” Consciousness and “Artificial” Thought: An Operational Architectonics Model Guided Approach. Brain Research 1428:80-92.
    Instead of using low-level neurophysiology mimicking and exploratory programming methods commonly used in the machine consciousness field, the hierarchical Operational Architectonics (OA) framework of brain and mind functioning proposes an alternative conceptual-theoretical framework as a new direction in the area of model-driven machine (robot) consciousness engineering. The unified brain-mind theoretical OA model explicitly captures (though in an informal way) the basic essence of brain functional architecture, which indeed constitutes a theory of consciousness. The OA describes the neurophysiological basis of the (...)
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  23.  30
    Andrew A. Fingelkurts, Alexander A. Fingelkurts & Carlos F. H. Neves (2009). Brain and Mind Operational Architectonics and Man-Made “Machine” Consciousness. Cognitive Processing 10 (2):105-111.
    To build a true conscious robot requires that a robot’s “brain” be capable of supporting the phenomenal consciousness as human’s brain enjoys. Operational Architectonics framework through exploration of the temporal structure of information flow and inter-area interactions within the network of functional neuronal populations [by examining topographic sharp transition processes in the scalp electroencephalogram (EEG) on the millisecond scale] reveals and describes the EEG architecture which is analogous to the architecture of the phenomenal world. This suggests that the task of (...)
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  24.  47
    Andrew A. Fingelkurts, Alexander A. Fingelkurts, Sakari Kallio & Antti Revonsuo (2007). Cortex Functional Connectivity as a Neurophysiological Correlate of Hypnosis: An EEG Case Study. Neuropsychologia 45 (7):14521462.
    Cortex functional connectivity associated with hypnosis was investigated in a single highly hypnotizable subject in a normal baseline condition and under neutral hypnosis during two sessions separated by a year. After the hypnotic induction, but without further suggestions as compared to the baseline condition, all studied parameters of local and remote functional connectivity were significantly changed. The significant differences between hypnosis and the baseline condition were observable (to different extent) in five studied independent frequency bands (delta, theta, alpha, beta, and (...)
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  25.  1
    Sarah Margairaz (2013). Entre apeiron présocratique et métastabilité thermodynamique : l'idée de préindividuel chez Gilbert Simondon. Methodos 13.
    Si la notion de « préindividuel » fait figure de nouveauté lexicale par rapport au vocabulaire de la métaphysique traditionnelle, et se présente ainsi comme une idée « neuve » à partir de laquelle Gilbert Simondon prétend rompre avec toute une tradition de pensée de l’individuation, celui-ci se réfère pourtant à plusieurs reprises pour en expliciter le sens aux notions d’apeiron et de phusis présocratiques. Cependant, c’est en s’appuyant également sur la notion de « métastabilité », qu’il emprunte à la (...)
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  26.  7
    James A. Coffman & Mikulecky (2015). Global Insanity Redux. Cosmos and History: The Journal of Natural and Social Philosophy 11 (1):1-14.
    800x600 In our book _Global Insanity_ we argued that the existential predicament faced by humanity is a predictable consequence of Western Enlightenment thinking and the resulting world model, whose ascendance with the Industrial Revolution entrained development of the global consumer Economy that is destroying the biosphere. This situation extends from a dominant mindset based on the philosophy of reductionism. The problem was recognized and characterized by Robert M. Hutchins. In 1985, Hutchins ideas were discussed by Robert Rosen in Chapter 1 (...)
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  27.  6
    Didier Debaise (2004). Le langage de l'individuation. Multitudes 4 (4):101-106.
    After a few general remarks on the theoretical stakes of Simondon’s lexicological inventions, a lexicon is offered to help the reader enter fully into his philosophy. Quotations are used to discuss and define six key notions: metastability, transduction, hylemorphism, « disparation », singularity and the transindividual.
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  28.  4
    Jacques Roux (2004). Penser le politique avec Simondon. Multitudes 4 (4):47-54.
    Simondon’s thinking of individuation is not directly concerned with any political application. Yet, through notions such as metastability, associated environment, centrality, or even ethics, the philosopher opens up pathways for a fresh examination of the processes of social transformation and the question of living together. Simondon ’s writings, which complement John Dewey s approach to the public, allow us to understand the political positively, as reflexive experimentation with the transindividuality of shared beings.
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  29.  3
    B. Massumi (2009). National Enterprise Emergency: Steps Toward an Ecology of Powers. Theory, Culture and Society 26 (6):153-185.
    The figure of today’s threat is the suddenly irrupting, locally self-organizing, systemically self-amplifying threat of large-scale disruption. This form of threat, fed by instability and metastability, is not only indiscriminate, it is also indiscrimin able; it is indistinguishable from the general environment. The figure of the environment shifts: from the harmony of a natural balance to the normality of a generalized crisis environment so encompassing in its endemic threat-form as to connect, across the spectrum, the polar extremes of war (...)
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