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Titolo:
ALPHA-OSCILLATION IN BRAIN FUNCTIONING - AN INTEGRATIVE THEORY
Autore:
BASAR E; SCHURMANN M; BASAREROGLU C; KARAKAS S;
Indirizzi:
UNIV LUBECK,INST PHYSIOL D-2400 LUBECK GERMANY TUBITAK,BRAIN DYNAM RES UNIT ANKARA TURKEY UNIV BREMEN,INST PSYCHOL & COGNIT RES BREMEN GERMANY
Titolo Testata:
International journal of psychophysiology
fascicolo: 1-3, volume: 26, anno: 1997,
pagine: 5 - 29
SICI:
0167-8760(1997)26:1-3<5:AIBF-A>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED DESYNCHRONIZATION; COMPOUND FIELD POTENTIALS; EVOKED-POTENTIALS; HEMISPHERIC-DIFFERENCES; 3-YEAR-OLD CHILDREN; NEOCORTICAL NEURONS; RETICULAR-FORMATION; EEG RHYTHMICITIES; VISCERAL GANGLION; AUDITORY PATHWAY;
Keywords:
EVOKED POTENTIAL; EVENT-RELATED POTENTIAL;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
104
Recensione:
Indirizzi per estratti:
Citazione:
E. Basar et al., "ALPHA-OSCILLATION IN BRAIN FUNCTIONING - AN INTEGRATIVE THEORY", International journal of psychophysiology, 26(1-3), 1997, pp. 5-29

Abstract

The old concept stating that EEG alpha (10-Hz) activity reflects passive or idling states of the brain is giving way to modern views of 10-Hz oscillations in relation to diverse brain functions comprising sensory, motor, and memory processes: (1) Spontaneous alpha activity is not pure noise as shown by methods of chaos analysis. (2) Evoked alpha oscillations patterns (precisely time-locked to a stimulus; duration approx. 200-300 ms) depend on the modality of stimulation and the recording site. (3) Induced alpha oscillations are initiated by, but not closely time-locked to a stimulus. (4) 10-Hz oscillations are recorded innervous systems of different complexities, from the human brain to isolated ganglia of invertebrates. The neural origins of 10-Hz oscillations are demonstrated by recordings at the cellular level. (5) Rather than trying to locate a unique alpha generator, it is preferable to assume that a 'diffuse and distributed alpha system' exists. A particularsupport for this hypothesis is given by stimulus-dependent hippocampal alpha responses in the cat brain. (6) The major physiological meaning of 10-Hz oscillations may be comparable to the putative universal role of gamma responses in brain signaling. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:01:52