Neuroimaging and neuroenergetics: brain activations as information-driven reorganization of energy flows.
Brain Cogn
; 72(3): 449-56, 2010 Apr.
Article
en En
| MEDLINE
| ID: mdl-20092923
ABSTRACT
There is increasing focus on the neurophysiological underpinnings of brain activations, giving birth to an emerging branch of neuroscience - neuroenergetics. However, no common definition of "brain activation" exists thus far. In this article, we define brain activation as the information-driven reorganization of energy flows in a population of neuroglial units that leads to an overall increase in energy utilization in this population. On the basis of this definition, the key aspects of modern biochemical and biophysical approaches to neuroenergetics are considered from the perspective of the links between these approaches within the context of the free energy minimization principle and the neurophysiological conception of deviance detection. In this light, we consider brain basal activity as subserving internal representations of the environment (predictive coding), and brain activation as reflecting the level of deviance from predictive coding.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Mapeo Encefálico
/
Corteza Cerebral
/
Metabolismo Energético
/
Procesos Mentales
/
Vías Nerviosas
Límite:
Humans
Idioma:
En
Revista:
Brain Cogn
Año:
2010
Tipo del documento:
Article
País de afiliación:
Francia