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Conference paper: Functional MRI Investigation of Audiovisual Interactions in Auditory Midbrain

TitleFunctional MRI Investigation of Audiovisual Interactions in Auditory Midbrain
Authors
Issue Date2018
Citation
2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Honolulu, Hawaii, 17-21 July 2018. In Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2018, v. 2018, p. 5527-5530 How to Cite?
AbstractThe brain integrates information from different sensory modalities to form a representation of the environment and facilitate behavioral responses. The auditory midbrain or inferior colliculus (IC) is a pivotal station in the auditory system, integrating ascending and descending information from various auditory sources and cortical systems. The present study investigated the modulation of auditory responses in the IC by visual stimuli of different frequencies and intensities in rats using functional MRI (fMRI). Low-frequency (1 Hz) high-intensity visual stimulus suppressed IC auditory responses. However, high-frequency (10 Hz) or low-intensity visual stimuli did not alter the IC auditory responses. This finding demonstrates that cross-modal processing occurs in the IC in a manner that depends on the stimulus. Furthermore, only low-frequency high-intensity visual stimulus elicited responses in non-visual cortical regions, suggesting that the above cross-modal modulation effect may arise from top-down cortical feedback. These fMRI results provide insight to guide future studies of cross-modal processing in sensory pathways.
Persistent Identifierhttp://hdl.handle.net/10722/265797
ISSN

 

DC FieldValueLanguage
dc.contributor.authorDong, Celia M.-
dc.contributor.authorLeong, Alex T.L.-
dc.contributor.authorManno, Francis Am-
dc.contributor.authorLau, Condon-
dc.contributor.authorHo, Leon C.-
dc.contributor.authorChan, Russell W.-
dc.contributor.authorFeng, Yanqiu-
dc.contributor.authorGao, Patrick P.-
dc.contributor.authorWu, EX-
dc.date.accessioned2018-12-03T01:21:43Z-
dc.date.available2018-12-03T01:21:43Z-
dc.date.issued2018-
dc.identifier.citation2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Honolulu, Hawaii, 17-21 July 2018. In Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2018, v. 2018, p. 5527-5530-
dc.identifier.issn1557-170X-
dc.identifier.urihttp://hdl.handle.net/10722/265797-
dc.description.abstractThe brain integrates information from different sensory modalities to form a representation of the environment and facilitate behavioral responses. The auditory midbrain or inferior colliculus (IC) is a pivotal station in the auditory system, integrating ascending and descending information from various auditory sources and cortical systems. The present study investigated the modulation of auditory responses in the IC by visual stimuli of different frequencies and intensities in rats using functional MRI (fMRI). Low-frequency (1 Hz) high-intensity visual stimulus suppressed IC auditory responses. However, high-frequency (10 Hz) or low-intensity visual stimuli did not alter the IC auditory responses. This finding demonstrates that cross-modal processing occurs in the IC in a manner that depends on the stimulus. Furthermore, only low-frequency high-intensity visual stimulus elicited responses in non-visual cortical regions, suggesting that the above cross-modal modulation effect may arise from top-down cortical feedback. These fMRI results provide insight to guide future studies of cross-modal processing in sensory pathways.-
dc.languageeng-
dc.relation.ispartofConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference-
dc.titleFunctional MRI Investigation of Audiovisual Interactions in Auditory Midbrain-
dc.typeConference_paper-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1109/EMBC.2018.8513629-
dc.identifier.pmid30441589-
dc.identifier.scopuseid_2-s2.0-85056622608-
dc.identifier.volume2018-
dc.identifier.spage5527-
dc.identifier.epage5530-
dc.publisher.placeHonolulu, Hawaii-

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