Neurodynamics An Exploration In Mesoscopic Brain Dynamics
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Neurodynamics: An Exploration in Mesoscopic Brain Dynamics
Author: Walter Freeman
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
Cortical evoked potentials are of interest primarily as tests of changing neuronal excitabilities accompanying normal brain function. The first three steps in the anal ysis of these complex waveforms are proper placement of electrodes for recording, the proper choice of electrical or sensory stimulus parameters, and the establish ment of behavioral control. The fourth is development of techniques for reliable measurement. Measurement consists of comparison of an unknown entity with a set of standard scales or dimensions having numerical attributes in preassigned degree. A physical object can be described by the dimensions of size, mass, density, etc. In addition there are dimensions such as location, velocity, weight, hardness, etc. Some of these dimensions can be complex (e. g. size depends on three or more subsidiary coordi nates), and some can be interdependent or nonorthogonal (e. g. specification of size and mass may determine density). In each dimension the unit is defined with refer ence to a standard physical entity, e. g. a unit of mass or length, and the result of measurement is expressed as an equivalence between the unknown and the sum of a specified number of units of that entity. The dimensions of a complex waveform are elementary waveforms from which that waveform can be built by simple addition. Any finite single-valued function of time is admissible. They are called basis functions (lO, 15), and they can be expressed in numeric as well as geometric form.
Neurodynamics of Cognition and Consciousness
Experimental evidence in humans and other mammalians indicates that complex neurodynamics is crucial for the emergence of higher-level intelligence. Dynamical neural systems with encoding in limit cycle and non-convergent attractors have gained increasing popularity in the past decade. The role of synchronization, desynchronization, and intermittent synchronization on cognition has been studied extensively by various authors, in particular by authors contributing to the present volume. This book addresses dynamical aspects of brain functions and cognition.
The Neurodynamic Soul
This book is an analysis and discussion of the soul as a psychophysical process and its role in mental representation, meaning, understanding and agency. Grant Gillett and Walter Glannon combine contemporary neuroscience and philosophy to address fundamental issues about human existence and living and acting in the world. Based in part on Aristotle's hylomorphism and model of the psyche, their approach is informed by a neuroscientific model of the brain as a dynamic organ in which patterns of neural oscillation and synchronization are shaped by biological, social and cultural factors inside and outside of it. The authors provide a richer and more robust account of the soul, or mind, than other accounts by framing it in neuroscientific and philosophical terms that do not explain it away but explain it as something that is shaped by how it responds to the natural and social environment in enabling flexible and adaptive behavior.