Task-dependent cortical activations during selective attention to audiovisual speech

dc.contributorAalto Universityen
dc.contributor.authorYlinen, Artturien_US
dc.contributor.authorWikman, Patriken_US
dc.contributor.authorLeminen, Miikaen_US
dc.contributor.authorAlho, Kimmoen_US
dc.contributor.departmentDepartment of Neuroscience and Biomedical Engineeringen
dc.contributor.organizationHelsinki University Hospitalen_US
dc.contributor.organizationUniversity of Helsinkien_US
dc.contributor.organizationGeorgetown Universityen_US
dc.descriptionFunding Information: This work received funding from the Academy of Finland (Grant #297848, “Modulation of brain activity patterns during selective attention to speech”, 2016–2021) and the Emil Aaltonen Foundation. The funders had no role in study design, collection, analysis, or interpretation of data, or in the writing of the article. Publisher Copyright: © 2021 The Author(s)
dc.description.abstractSelective listening to speech depends on widespread networks of the brain, but how the involvement of different neural systems in speech processing is affected by factors such as the task performed by a listener and speech intelligibility remains poorly understood. We used functional magnetic resonance imaging to systematically examine the effects that performing different tasks has on neural activations during selective attention to continuous audiovisual speech in the presence of task-irrelevant speech. Participants viewed audiovisual dialogues and attended either to the semantic or the phonological content of speech, or ignored speech altogether and performed a visual control task. The tasks were factorially combined with good and poor auditory and visual speech qualities. Selective attention to speech engaged superior temporal regions and the left inferior frontal gyrus regardless of the task. Frontoparietal regions implicated in selective auditory attention to simple sounds (e.g., tones, syllables) were not engaged by the semantic task, suggesting that this network may not be not as crucial when attending to continuous speech. The medial orbitofrontal cortex, implicated in social cognition, was most activated by the semantic task. Activity levels during the phonological task in the left prefrontal, premotor, and secondary somatosensory regions had a distinct temporal profile as well as the highest overall activity, possibly relating to the role of the dorsal speech processing stream in sub-lexical processing. Our results demonstrate that the task type influences neural activations during selective attention to speech, and emphasize the importance of ecologically valid experimental designs.en
dc.description.versionPeer revieweden
dc.identifier.citationYlinen, A, Wikman, P, Leminen, M & Alho, K 2022, ' Task-dependent cortical activations during selective attention to audiovisual speech ', Brain Research, vol. 1775, 147739 . https://doi.org/10.1016/j.brainres.2021.147739en
dc.identifier.otherPURE UUID: a75ebe9a-42df-45ae-aa13-5470de59b00ben_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/a75ebe9a-42df-45ae-aa13-5470de59b00ben_US
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dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/76700409/Task_dependent_cortical_activations_during_selective_attention_to_audiovisual_speech.pdfen_US
dc.relation.ispartofseriesBrain Researchen
dc.relation.ispartofseriesVolume 1775en
dc.subject.keywordAudiovisual speech processingen_US
dc.subject.keywordFunctional magnetic resonance imagingen_US
dc.subject.keywordSelective attention to speechen_US
dc.subject.keywordTask-dependent effectsen_US
dc.titleTask-dependent cortical activations during selective attention to audiovisual speechen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi