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  Sustained spatial attention to vibrotactile stimulation in the flutter range: Relevant brain regions and their interaction

Goltz, D., Pleger, B., Thiel, S. D., Villringer, A., & Müller, M. M. (2013). Sustained spatial attention to vibrotactile stimulation in the flutter range: Relevant brain regions and their interaction. PLoS One, 8(12): e84196. doi:10.1371/journal.pone.0084196.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-F4D2-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-8526-C
Genre: Journal Article

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Goltz_SustainedSpatialAttention.pdf (Publisher version), 618KB
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© 2013 Goltz et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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 Creators:
Goltz, Dominique1, 2, Author              
Pleger, Burkhard1, 3, Author              
Thiel, Sabrina D.1, Author              
Villringer, Arno1, 4, Author              
Müller, Matthias M.2, Author
Affiliations:
1Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
2Institute of Psychology, University of Leipzig, Germany, ou_persistent22              
3Clinic for Cognitive Neurology, University of Leipzig, Germany, ou_persistent22              
4Berlin School of Mind and Brain, Humboldt University Berlin, Germany, ou_persistent22              

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 Abstract: The present functional magnetic resonance imaging (fMRI) study was designed to get a better understanding of the brain regions involved in sustained spatial attention to tactile events and to ascertain to what extent their activation was correlated. We presented continuous 20 Hz vibrotactile stimuli (range of flutter) concurrently to the left and right index fingers of healthy human volunteers. An arrow cue instructed subjects in a trial-by-trial fashion to attend to the left or right index finger and to detect rare target events that were embedded in the vibrotactile stimulation streams. We found blood oxygen level-dependent (BOLD) attentional modulation in primary somatosensory cortex (SI), mainly covering Brodmann area 1, 2, and 3b, as well as in secondary somatosensory cortex (SII), contralateral to the to-be-attended hand. Furthermore, attention to the right (dominant) hand resulted in additional BOLD modulation in left posterior insula. All of the effects were caused by an increased activation when attention was paid to the contralateral hand, except for the effects in left SI and insula. In left SI, the effect was related to a mixture of both a slight increase in activation when attention was paid to the contralateral hand as well as a slight decrease in activation when attention was paid to the ipsilateral hand (i.e., the tactile distraction condition). In contrast, the effect in left posterior insula was exclusively driven by a relative decrease in activation in the tactile distraction condition, which points to an active inhibition when tactile information is irrelevant. Finally, correlation analyses indicate a linear relationship between attention effects in intrahemispheric somatosensory cortices, since attentional modulation in SI and SII were interrelated within one hemisphere but not across hemispheres. All in all, our results provide a basis for future research on sustained attention to continuous vibrotactile stimulation in the range of flutter.

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Language(s): eng - English
 Dates: 2013-06-172013-11-132013-12-19
 Publication Status: Published online
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1371/journal.pone.0084196
PMID: 24367642
PMC: PMC3868580
Other: eCollection 2013
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Title: PLoS One
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 8 (12) Sequence Number: e84196 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: /journals/resource/1000000000277850