Dissociable influences of auditory object vs. spatial attention on visual system oscillatory activity

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ahveninen, J.
dc.contributor.author Jääskeläinen, I.P.
dc.contributor.author Belliveau, J.W.
dc.contributor.author Hämäläinen, M.
dc.contributor.author Lin, F-H.
dc.contributor.author Raij, T.
dc.date.accessioned 2017-05-11T09:15:55Z
dc.date.available 2017-05-11T09:15:55Z
dc.date.issued 2012
dc.identifier.citation Ahveninen , J , Jääskeläinen , I P , Belliveau , J W , Hämäläinen , M , Lin , F-H & Raij , T 2012 , ' Dissociable influences of auditory object vs. spatial attention on visual system oscillatory activity ' PLOS ONE , vol 7 , no. 6 , e38511 , pp. 1-10 . DOI: 10.1371/journal.pone.0038511 en
dc.identifier.issn 1932-6203
dc.identifier.other PURE UUID: f6a884b3-91d3-409a-b6fb-124b86e8714a
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/dissociable-influences-of-auditory-object-vs-spatial-attention-on-visual-system-oscillatory-activity(f6a884b3-91d3-409a-b6fb-124b86e8714a).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/12866693/journal.pone.0038511.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25981
dc.description.abstract Given that both auditory and visual systems have anatomically separate object identification (“what”) and spatial (“where”) pathways, it is of interest whether attention-driven cross-sensory modulations occur separately within these feature domains. Here, we investigated how auditory “what” vs. “where” attention tasks modulate activity in visual pathways using cortically constrained source estimates of magnetoencephalograpic (MEG) oscillatory activity. In the absence of visual stimuli or tasks, subjects were presented with a sequence of auditory-stimulus pairs and instructed to selectively attend to phonetic (“what”) vs. spatial (“where”) aspects of these sounds, or to listen passively. To investigate sustained modulatory effects, oscillatory power was estimated from time periods between sound-pair presentations. In comparison to attention to sound locations, phonetic auditory attention was associated with stronger alpha (7–13 Hz) power in several visual areas (primary visual cortex; lingual, fusiform, and inferior temporal gyri, lateral occipital cortex), as well as in higher-order visual/multisensory areas including lateral/medial parietal and retrosplenial cortices. Region-of-interest (ROI) analyses of dynamic changes, from which the sustained effects had been removed, suggested further power increases during Attend Phoneme vs. Location centered at the alpha range 400–600 ms after the onset of second sound of each stimulus pair. These results suggest distinct modulations of visual system oscillatory activity during auditory attention to sound object identity (“what”) vs. sound location (“where”). The alpha modulations could be interpreted to reflect enhanced crossmodal inhibition of feature-specific visual pathways and adjacent audiovisual association areas during “what” vs. “where” auditory attention. en
dc.format.extent 1-10
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PLOS ONE en
dc.relation.ispartofseries Volume 7, issue 6 en
dc.rights openAccess en
dc.title Dissociable influences of auditory object vs. spatial attention on visual system oscillatory activity en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.identifier.urn URN:NBN:fi:aalto-201705114356
dc.identifier.doi 10.1371/journal.pone.0038511
dc.type.version publishedVersion

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