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Activity in part of the neural correlates of consciousness reflects integration
Umeå University, Faculty of Medicine, Department of Integrative Medical Biology (IMB). Umeå University, Faculty of Medicine, Umeå Centre for Functional Brain Imaging (UFBI).
2017 (English)In: Consciousness and Cognition, ISSN 1053-8100, E-ISSN 1090-2376, Vol. 55, p. 26-34Article in journal (Refereed) Published
Abstract [en]

Integration is commonly viewed as a key process for generating conscious experiences. Accordingly, there should be increased activity within the neural correlates of consciousness when demands on integration increase. We used fMRI and "informational masking" to isolate the neural correlates of consciousness and measured how the associated brain activity changed as a function of required integration. Integration was manipulated by comparing the experience of hearing simple reoccurring tones to hearing harmonic tone triplets. The neural correlates of auditory consciousness included superior temporal gyrus, lateral and medial frontal regions, cerebellum, and also parietal cortex. Critically, only activity in left parietal cortex increased significantly as a function of increasing demands on integration. We conclude that integration can explain part of the neural activity associated with the generation conscious experiences, but that much of associated brain activity apparently reflects other processes.

Place, publisher, year, edition, pages
2017. Vol. 55, p. 26-34
Keywords [en]
auditory, brain, consciousness, fMRI, integration
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:umu:diva-141489DOI: 10.1016/j.concog.2017.07.007ISI: 000413130300003PubMedID: 28753443OAI: oai:DiVA.org:umu-141489DiVA, id: diva2:1158476
Available from: 2017-11-20 Created: 2017-11-20 Last updated: 2018-06-09Bibliographically approved

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Eriksson, Johan

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Department of Integrative Medical Biology (IMB)Umeå Centre for Functional Brain Imaging (UFBI)
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