<i>Self-Organized Criticality: Emergent Complex Behavior in Physical and Biological Systems</i>

Jensen, Henrik Jeldtoft; Magnasco, Marcelo O.

doi:10.1063/1.882869

Cited by 530 publications

(834 citation statements)

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“…At all scales, the constraints among micro-elements must break or loosen to some degree before the system as a macrostate can change [49]. The system of a particular level is governed by fixed parameters, the control parameters.…”

Section: Physical Spacementioning

confidence: 99%

“…These studies have special importance for consciousness research, because they reveal phenomenal consciousness (dream "world") in a pure form isolated from the usual external sensory input and motor output [314]. Considerable empirical findings clearly indicate that dream phenomenal experiences 49 are carefully organized within a spatially extended world or virtual 45 Damasio [328] using findings from experimental and clinical neuropsychology and neurophysiology comes to conclusion that this phenomenal space is not self-presenting as such; however it is the crucial aspect that allows selfpresenting qualities (contents) to come into being. 46 Quale (plural "qualia") is the qualitative identity of the subjective experience.…”

Section: Phenomenal Spacementioning

confidence: 99%

“…Moreover, if shown more than one object at a time, such patients report seeing only one [355]. 49 Even individuals who are blinded after the age of 5-7 years appear to have visual imagination and full-fledged dreams with completely realistic visual imagery throughout their life [356], thus indicating the existence of a quite independent and rich phenomenal world.…”

Section: Phenomenal Spacementioning

confidence: 99%

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Natural world physical, brain operational, and mind phenomenal space–time

Fingelkurts

Neves

2010

Physics of Life Reviews

166

233

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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 the brain. This space-time is limited to the execution of brain operations of differing complexity. During each such brain operation a particular short-term spatio-temporal pattern of integrated activity of different brain areas emerges within related operational space-time. At the same time, to have a fully functional human brain one needs to have a subjective mental experience. Current research on the subjective mental experience offers detailed analysis of space-time organization of the mind. According to this research, subjective mental experience (subjective virtual world) has definitive spatial and temporal properties similar to many physical phenomena. Based on systematic review of the propositions and tenets of brain and mind space-time descriptions, our aim in this review essay is to explore the relations between the two. To be precise, we would like to discuss the hypothesis that via the brain operational space-time the mind subjective space-time is connected to otherwise distant physical space-time reality.Key words: spatial, temporal, consciousness, cognition, operation, architectonics, EEG, field, metastability, physics, coordinative dynamics, self-organization, cortex.

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Section: Physical Spacementioning

confidence: 99%

Section: Phenomenal Spacementioning

confidence: 99%

Section: Phenomenal Spacementioning

confidence: 99%

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Natural world physical, brain operational, and mind phenomenal space–time

Fingelkurts

Neves

2010

Physics of Life Reviews

166

233

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“…(8) A final possibility to be considered is that the brain as a system might function in a state of self-organized criticality (Schroeder, 1991;Bak, 1997;Jensen, 1998;Linkenkaer-Hansen et al, 2001;Freeman, 2005). The time course of synchrony establishment in such a system remains to be established.…”

Section: Possible Mechanisms Of Generation Of Global Synchronymentioning

confidence: 99%

EEG synchrony during a perceptual-cognitive task: Widespread phase synchrony at all frequencies

Pockett

Bold

Freeman

2009

Clinical Neurophysiology

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“…Also the size distribution of the connected clusters of necrotic tumour regions showed an algebraic tail (again with exponent ∼ 1.4). These power laws are reminiscent of a self-organized critical state (Jensen, 1998), for which the absence of a typical length scale (over which for instance size distributions would decay exponentially) is characteristic, like in a stochastic dilution process at the percolation threshold or a flow-correlated percolation process (Lee, Bartha and Rieger, 2006).…”

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confidence: 99%

Vascular remodelling of an arterio-venous blood vessel network during solid tumour growth

Welter

Bartha

Rieger

2009

Journal of Theoretical Biology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A c c e p t e d m a n u s c r i p t AbstractWe formulate a theoretical model to analyse the vascular remodelling process of an arterio-venous vessel network during solid tumour growth. The model incorporates a hierarchically organized initial vasculature comprising arteries, veins and capillaries, and involves sprouting angiogenesis, vessel cooption, dilation and regression as well as tumour cell proliferation and death. The emerging tumour vasculature is non-hierarchical, compartmentalized into well characterized zones and transports efficiently an injected drug-bolus. It displays a complex geometry with necrotic zones and "hot spots" of increased vascular density and blood flow of varying size. The corresponding cluster size distribution is algebraic, reminiscent of a self-organized critical state.The intra-tumour vascular-density fluctuations correlate with pressure drops in the initial vasculature suggesting a physical mechanism underlying hot-spot formation.

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Self-Organized Criticality: Emergent Complex Behavior in Physical and Biological Systems

Cited by 530 publications

References 0 publications

Natural world physical, brain operational, and mind phenomenal space–time

Natural world physical, brain operational, and mind phenomenal space–time

EEG synchrony during a perceptual-cognitive task: Widespread phase synchrony at all frequencies

Vascular remodelling of an arterio-venous blood vessel network during solid tumour growth

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