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Titolo:
Oscillatory frontal theta responses are increased upon bisensory stimulation
Autore:
Sakowitz, OW; Schurmann, M; Basar, E;
Indirizzi:
Med Univ Lubeck, Inst Physiol, D-23538 Lubeck, Germany Med Univ Lubeck Lubeck Germany D-23538 Physiol, D-23538 Lubeck, Germany Humboldt Univ, Charite, Dept Neurosurg, D-13353 Berlin, Germany Humboldt Univ Berlin Germany D-13353 Neurosurg, D-13353 Berlin, Germany TUBITAK, Brain Dynam Res Unit, Ankara, Turkey TUBITAK Ankara TurkeyTUBITAK, Brain Dynam Res Unit, Ankara, Turkey
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 5, volume: 111, anno: 2000,
pagine: 884 - 893
SICI:
1388-2457(200005)111:5<884:OFTRAI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; ALPHA-OSCILLATIONS; EVOKED POTENTIALS; PREFRONTAL CORTEX; VISUAL-STIMULI; MENTAL TASK; EEG; BRAIN; MEMORY; RHYTHM;
Keywords:
event-related potential; theta; oscillation; multisensory; enhancement factor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
66
Recensione:
Indirizzi per estratti:
Indirizzo: Basar, E Med Univ Lubeck, Inst Physiol, D-23538 Lubeck, Germany Med Univ Lubeck Lubeck Germany D-23538 D-23538 Lubeck, Germany
Citazione:
O.W. Sakowitz et al., "Oscillatory frontal theta responses are increased upon bisensory stimulation", CLIN NEU, 111(5), 2000, pp. 884-893

Abstract

Objectives: To investigate the functional correlation of oscillatory EEG components with the interaction of sensory modalities following simultaneousaudio-visual stimulation. Methods: In an experimental study (15 subjects) we compared auditory evoked potentials (AEPs) and visual evoked potentials (VEPs) to bimodal evoked potentials (BEPs; simultaneous auditory and visual stimulation). BEPs were assumed to be brain responses to complex stimuli as a marker for intermodal associative functioning. Results: Frequency domain analysis of these EPs showed marked theta-range components in response to bimodal stimulation. These theta components couldnot be explained by linear addition of the unimodal responses in the time domain. Considering topography the increased theta-response showed a remarkable frontality in proximity to multimodal association cortices. Referring to methodology we try to demonstrate that, even if various behavioral correlates of brain oscillations exist, common patterns can be extracted by means of a systems-theoretical approach. Conclusions: Serving as an example of functionally relevant brain oscillations, theta responses could be interpreted as an indicator of associative information processing. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 20:52:28