Beta Oscillations Distinguish Between Two Forms of Mental Imagery While Gamma and Theta Activity Reflects Auditory Attention

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dc.article.number389
dc.contributor.authorVillena González, Mario
dc.contributor.authorPalacios García, Ismael José
dc.contributor.authorRodríguez B., Eugenio
dc.contributor.authorLópez Hernández, Vladimir
dc.date.accessioned2022-11-03T15:37:45Z
dc.date.available2022-11-03T15:37:45Z
dc.date.issued2018
dc.date.updated2022-10-04T18:04:51Z
dc.description.abstractVisual sensory processing of external events decreases when attention is internally oriented toward self-generated thoughts and also differences in attenuation have been shown depending on the thought’s modality (visual or auditory thought). The present study aims to assess whether such modulations occurs also in auditory modality. In order to investigate auditory sensory modulations, we compared a passive listening condition with two conditions in which attention was internally oriented as a part of a task; a visual imagery condition and an inner speech condition. EEG signal was recorded from 20 participants while they were exposed to auditory probes during these three conditions. ERP results showed no differences in N1 auditory response comparing the three conditions reflecting maintenance of evoked electrophysiological reactivity for auditory modality. Nonetheless, time-frequency analyses showed that gamma and theta power in frontal regions was higher for passive listening than for internal attentional conditions. Specifically, the reduced amplitude in early gamma and theta band during both inward attention conditions may reflect reduced conscious attention of the current auditory stimulation. Finally, different pattern of beta band activity was observed only during visual imagery which can reflect cross-modal integration between visual and auditory modalities and it can distinguish this form of mental imagery from the inner speech. Taken together, these results showed that attentional suppression mechanisms in auditory modality are different from visual modality during mental imagery processes. Our results about oscillatory activity also confirm the important role of gamma oscillations in auditory processing and the differential neural dynamics underlying the visual and auditory/verbal imagery.
dc.fuente.origenSIPA
dc.identifier.doi10.3389/fnhum.2018.00389
dc.identifier.urihttps://www.frontiersin.org/articles/10.3389/fnhum.2018.00389/full
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/65301
dc.information.autorucEscuela de psicología ; Villena González, Mario ; 0000-0003-2080-8413 ; 224702
dc.information.autorucEscuela de medicina ; Palacios García, Ismael José ; S/I ; 224700
dc.information.autorucEscuela de psicología ; Rodríguez B., Eugenio ; S/I ; 65567
dc.information.autorucEscuela de psicología ; López Hernández, Vladimir ; 0000-0001-5794-9338 ; 1002510
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final11
dc.pagina.inicio1
dc.revistaFrontiers in Human Neuroscience
dc.rightsacceso abierto
dc.titleBeta Oscillations Distinguish Between Two Forms of Mental Imagery While Gamma and Theta Activity Reflects Auditory Attention
dc.typeartículo
dc.volumen12
sipa.codpersvinculados224702
sipa.codpersvinculados224700
sipa.codpersvinculados65567
sipa.codpersvinculados1002510
sipa.indexWOS-ISI
sipa.indexWOS
sipa.indexScopus
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