Edmund T. Rolls and Gustavo Deco
The activity of neurons in the brain is noisy in that their firing times are random when they are firing at a given mean rate. This introduces a random or stochastic property into brain processing which we show in this book is fundamental to understanding many aspects of brain function, including
probabilistic decision making, perception, memory recall, short-term memory, attention, and even creativity. In The Noisy Brain we show that in many of these processes, the noise caused by the random neuronal firing times is useful. However, this stochastic dynamics can be unstable or overstable,
and we show that the stability of attractor networks in the brain in the face of noise may help to understand some important dysfunctions that occur in schizophrenia, normal aging, and obsessive-compulsive disorder.
The Noisy Brain provides a unifying computational approach to brain
function that links synaptic and biophysical properties of neurons through the firing of single neurons to the properties of the noise in large connected networks of noisy neurons to the levels of functional neuroimaging and behaviour. The book describes integrate - and - fire neuronal attractor
networks with noise, and complementary mean-field analyses using approaches from theoretical physics. The book shows how they can be used to understand neuronal, functional neuroimaging, and behavioural data on decision-making, perception, memory recall, short-term memory, attention, and brain
dysfunctions that occur in schizophrenia, normal aging, and obsessive-compulsive disorder.
The Noisy Brain will be valuable for those in the fields of neuroscience, psychology, cognitive neuroscience, and biology from advanced undergraduate level upwards. It will also be of interest to
those interested in neuroeconomics, animal behaviour, zoology, psychiatry, medicine, physics, and philosophy. The book has been written with modular chapters and sections, making it possible to select particular Chapters for course work. Advanced material on the physics of stochastic dynamics in the
brain is contained in the Appendix.
1. Introduction: neuronal, cortical, and network foundations
2. Stochastic neurodynamics
3. Short-term memory and stochastic dynamics
4. Attention and stochastic dynamics
5. Probabilistic decision-making
6. Confidence and decision-making
7. Perceptual detection and
stochastic dynamics
8. Applications of this stochastic dynamical theory to brain function
A. Mean-field analyses, and stochastic dynamics
References
Index
B. Colour Plates
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Edmund T. Rolls is a neuroscientist at The Oxford Centre for Computational Neuroscience, Oxford, http://www.oxcns.org, and was Professor of Experimental Psychology at the University of Oxford, and a Fellow and Tutor of Corpus Christi College, Oxford. He read preclinical medicine at the
University of Cambridge, and now performs research linking computational neuroscience approaches to neurophysiological, human functional neuroimaging and neuropsychological studies in order to provide a fundamental basis for understanding human brain function and its disorders. Gustavo Deco is a
theoretical physicist, psychologist and computer scientist and Professor at the Institució Catalana de Recerca i Estudis and at the Pompeu Fabra University, Barcelona where he is leading the Theoretical and Computational Neuroscience group in the Center for Brain and Cognition
(http://cns.upf.edu/gustavo/). He is a Visiting Fellow at the McDonnell Centre for Cognitive Neuroscience at the University of Oxford.
