Data/hora: 10/06/2024 06:56:34

Biblioteca(s): | Ebooks.
Data corrente: | 01/02/2013
Data da última atualização: | 04/02/2013
Autoria: | STEYN-ROSS, D. A.; STEYN-ROSS, M.
Afiliação: | D. Alistair Steyn-ross; Moira Steyn-ross.
Título: | Modeling Phase Transitions in the Brain.
Ano de publicação: | 2010
Fonte/Imprenta: | Springer eBooks.
Volume: | 4
Páginas: | XXV, 350p. 103 illus., 24 illus. in color.
Descrição Física: | digital.
Série: | Springer Series in Computational Neuroscience ;
ISBN: | 9781441907967
DOI: | 10.1007/978-1-4419-0796-7
Idioma: | Inglês
Conteúdo: | <P> Foreword by Walter J. Freeman.</P> <P></P> <P>The induction of unconsciousness using anesthetic drugs demonstrates that the cerebral cortex can operate in two very different &nbsp;modes: alert and responsive versus unaware and quiescent. &nbsp;But the states of wakefulness and sleep are not single-neuron properties---they emerge as bulk properties of cooperating populations of neurons, with the switchover between states being similar to the physical change of phase observed when water freezes or ice melts. &nbsp;Some brain-state transitions, such as sleep cycling, anesthetic induction, epileptic seizure, are obvious and detected readily with a few EEG electrodes; others, such as the emergence of gamma rhythms during cognition, or the ultra-slow BOLD rhythms of relaxed free-association, are much more subtle. &nbsp;The unifying theme of this book is the notion that all of these bulk changes in brain behavior can be treated as phase transitions between distinct brain states.</P> <P></P> <P>"Modeling Phase Transitions in the Brain" contains chapter contributions from leading researchers who apply state-space methods, network models, and biophysically-motivated continuum approaches to investigate a range of neuroscientifically relevant problems that include analysis of nonstationary EEG time-series; network topologies that limit epileptic spreading; saddle--node bifurcations for anesthesia, sleep-cycling, and the wake--sleep switch; prediction of dynamical and noise-induced spatiotemporal instabilities underlying BOLD, alpha-, and gamma-band EEG oscillations, gap-junction-moderated Turing structures, and Hopf--Turing interactions leading to cortical waves.&nbsp;</P> <P></P> <P>Written for:</P> <P></P> <P>Researchers, clinicians, physicians, neurologists</P> <P></P> <P>About the editors:</P> <P></P> <P>Alistair Steyn-Ross and Moira Steyn-Ross are computational and theoretical physicists in the Department of Engineering, University of Waikato, New Zealand. &nbsp;They share a long-standing interest in the application of physics-based methods to gain insight into the emergent behavior of complex biological systems such as single neurons and interacting neural populations.</P>
Palavras-Chave: | Anesthesiology; Biology; Biomedicine; Computer Appl. in Life Sciences; Neurobiology; Neurology; Neurosciences.
Thesaurus Nal: | medicine.
Categoria do assunto: | --
URL: | http://dx.doi.org/10.1007/978-1-4419-0796-7
Registro original: | Ebooks (Ebooks)