Neuronal networks for induced '40 Hz' rhythms.
Trends Neurosci
; 19(5): 202-8, 1996 May.
Article
en En
| MEDLINE
| ID: mdl-8723208
ABSTRACT
A fast, coherent EEG rhythm, called a gamma or a '40 Hz' rhythm, has been implicated both in higher brain functions, such as the 'binding' of features that are detected by sensory cortices into perceived objects, and in lower level processes, such as the phase coding of neuronal activity. Computer simulations of several parts of the brain suggest that gamma rhythms can be generated by pools of excitatory neurones, networks of inhibitory neurones, or networks of both excitatory and inhibitory neurones. The strongest experimental evidence for rhythm generators has been shown for (1) neocortical and thalamic neurones that are intrinsic '40 Hz' oscillators, although synchrony still requires network mechanisms; and (2) hippocampal and neocortical networks of mutually inhibitory interneurones that generate collective 40 Hz rhythms when excited tonically.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Corteza Visual
/
Redes Neurales de la Computación
/
Vías Nerviosas
Límite:
Animals
Idioma:
En
Revista:
Trends Neurosci
Año:
1996
Tipo del documento:
Article
País de afiliación:
Reino Unido