High-frequency brain activity: Its possible role in attention, perception and language processing

Pulvermüller, Friedemann; Birbaumer, Niels; Lutzenberger, Werner; Mohr, Bettina

doi:10.1016/s0301-0082(97)00023-3

Cited by 226 publications

(105 citation statements)

References 88 publications

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“…Our investigation of the TFR energy emphasized high frequency oscillations (>30 Hz) due to the relevance of the fast gamma oscillations for both the binding of temporal (and spatial) information necessary to build a coherent perception [Tallon-Baudry et al, 1997] and the integration of bottom-up and top-down processes Herrmann et al, 2004a;Pulvermuller et al, 1997;Varela et al, 2001].…”

Section: Time-frequency Analysismentioning

confidence: 91%

Decrease in early right alpha band phase synchronization and late gamma band oscillations in processing syntax in music

Ruiz

Koelsch

Bhattacharya

2008

Human Brain Mapping

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The present study investigated the neural correlates associated with the processing of musicsyntactical irregularities as compared with regular syntactic structures in music. Previous studies reported an early ($200 ms) right anterior negative component (ERAN) by traditional event-related-potential analysis during music-syntactical irregularities, yet little is known about the underlying oscillatory and synchronization properties of brain responses which are supposed to play a crucial role in general cognition including music perception. First we showed that the ERAN was primarily represented by low frequency (<8 Hz) brain oscillations. Further, we found that music-syntactical irregularities as compared with music-syntactical regularities, were associated with (i) an early decrease in the alpha band (9-10 Hz) phase synchronization between right fronto-central and left temporal brain regions, and (ii) a late ($500 ms) decrease in gamma band (38-50 Hz) oscillations over fronto-central brain regions. These results indicate a weaker degree of long-range integration when the musical expectancy is violated. In summary, our results reveal neural mechanisms of music-syntactic processing that operate at different levels of cortical integration, ranging from early decrease in long-range alpha phase synchronization to late local gamma oscillations. Hum Brain Mapp 30:1207Mapp 30: -1225Mapp 30: , 2009. V V C 2008 Wiley-Liss, Inc.

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Section: Time-frequency Analysismentioning

confidence: 91%

Decrease in early right alpha band phase synchronization and late gamma band oscillations in processing syntax in music

Ruiz

Koelsch

Bhattacharya

2008

Human Brain Mapping

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“…Considerando o estado de hipnose como um mecanismo defensivo e adaptativo [27][28][29][30][31][32][33][34] com uma raiz filogenética no estado de IT, é esperado que suas características possam evoluir ou mudar ao longo de uma série de sessões, como acontece neste último. Contribuindo com essa ideia, os resultados de Batty et al 110 mostraram a ampliação do grau de SH com o treinamento hipnótico e a melhora da performance de pessoas em tarefas dependentes da atenção 26 .…”

Section: Discussionunclassified

“…Variações observadas no eletroencefalograma (EEG) durante o relaxamento hipnótico (RH) refletem uma estabilização da atividade elétrica cortical que pode significar um recurso natural de importante papel protetor, não só durante a locomoção rápida e de longa duração, mas também em casos de exposição a intenso estresse 27,28 . O RH previne a excitação provocada por estímulos desagradáveis, pois facilita a atividade parassimpática; efeito que pode ser ampliado na hipnose [28][29][30][31][32][33][34] . Além disso, no EEG há um aumento da atividade de baixa frequência e alta voltagem, ondas dos tipos alfa (escala de frequência de 8-12 Hz) e teta (4-7 Hz) [35][36][37] , que representa o relaxamento mental 38 .…”

Section: Introductionunclassified

Hipnose, imobilidade tônica e eletroencefalograma

Cortez

Silva

2013

J. bras. psiquiatr.

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resuMo objetivo: Apresentar uma revisão sobre as características da atividade elétrica cerebral que acompanha a hipnose animal, estado induzido em laboratório em mamíferos por manipulações experimentais, bem como sobre as alterações encontradas no EEG durante o estado de hipnose, visando à discussão dos resultados encontrados na busca de evidências dos fundamentos filogenéticos que possam conduzir ao entendimento dos rudimentos neurais da hipnose humana. Método: Livros e bases eletrônicas de dados foram consultados. Critério de inclusão: artigos originais publicados entre 1966-2012. Critério de exclusão: artigos que se afastavam da visão eletroneurofisiológica da hipnose. resultados: Foram encontradas 662 referências, tendo sido selecionados os artigos e livros referenciados. Além desses artigos, foi incluído no estudo o artigo de Hoagland, publicado em 1928, que é um clássico na área de imobilidade tônica em vertebrados. Conclusões: O estado de hipnose humano resulta de processamentos em inúmeros circuitos paralelos distribuídos em uma complexa rede neuronal, envolvendo, dessa forma, uma ampla área do encéfalo. Na trajetória evolutiva, a grande ampliação dos recursos corticais pode ter tornado as respostas de imobilidade tônica passíveis de modulação consciente, respostas essas ainda presentes nos humanos e que se manifestam involuntariamente em situações de grande ameaça. Vários estudos têm evidenciado mecanismos neurofisiológicos capazes de reforçar a visão da hipnose não só como um eficiente recurso para procedimentos médicos e odontológicos, funcionando como auxiliar na analgesia e sedação, mas também como excelente ferramenta psicoterapêutica. aBstraCt objective: To present a revision on characteristics of electric brain activity accompanying the animal hypnosis, state induced in laboratory in mammals by means experimental manipulation, as well as on alterations found in EEG during hypnosis, aiming to find phylogenetic basis that could conduct us to the understanding of neural rudiments of the hypnosis state. Method: Books and electronics data basis were consulted. Inclusion criteria: original articles published between 1966-2012. Exclusion criteria: articles deviating from electro-neurophysiological hypnosis vision. results: It was found 662 articles in journals and books, and references show those chosen. In addition, we included the Hoagland' paper published in 1928, which is a classical paper about tonic immobility in vertebrates. Conclusions: Human hypnosis state results from processing of several parallel circuits distributed in a complex neuronal network, involving a wide area of encephalon. In the evolution, the enlargement of

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“…Such 40-Hz components in the EEG might constitute a correlate of the perception and perceptual fusion of successive acoustic events (Pulvermüller et al, 1997). Streaming, defined as the splitting of acoustic events into distinct auditory objects, can be conceived as the converse of auditory grouping or binding.…”

Section: Discussionmentioning

confidence: 99%

Influence of Benzodiazepines on Auditory Perception

Morand-Villeneuve

Micheyl

Gagnieu

et al. 2002

Neuropsychopharmacol

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The aim of this study was to test for an influence of benzodiazepine (BZD) on various perceptual and/or cognitive auditory processes. Loudness, auditory selective attention, and the ability of subjects to form perceptual streams out of alternating tone sequences were tested. Nine subjects were tested before, 1, 3, 7, and 24 h after a single-dose oxazepam vs placebo administration in a crossover design. A sample of blood allows us to measure plasma oxazepam concentration. The results revealed a significant reduction in stream segregation expressed as d 0 scores 1 h after oxazepam intake in the test subjects. No significant change occurred across time in the same subjects when they were administrated a placebo in another session. Furthermore, oxazepam had no substantial and systematic influence either on auditory selective attention or on loudness perception. Altogether, these results suggest that the perceptual organization of sound sequences involves inhibitory neural mechanisms, which can be affected by BZDs. This outcome is consistent with existing models of auditory stream segregation and may be paralleled with earlier findings on the effect of BZDs on perceptual binding in the visual modality.

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High-frequency brain activity: Its possible role in attention, perception and language processing

Cited by 226 publications

References 88 publications

Decrease in early right alpha band phase synchronization and late gamma band oscillations in processing syntax in music

Decrease in early right alpha band phase synchronization and late gamma band oscillations in processing syntax in music

Hipnose, imobilidade tônica e eletroencefalograma

Influence of Benzodiazepines on Auditory Perception

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