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  Using steady state responses in MEG to study information integration within and across the senses

Giani, A., Ortiz, E., Belardinelli, P., Kleiner, M., Preissl, H., & Noppeney, U. (2011). Using steady state responses in MEG to study information integration within and across the senses. Poster presented at 17th Annual Meeting of the Organization for Human Brain Mapping (HBM 2011), Québec City, Canada.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BB90-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-10E8-3
Genre: Poster

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HBM-2011-Giani.pdf (Abstract), 361KB
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Giani, AS1, 2, Author              
Ortiz, EB, Author
Belardinelli, P, Author
Kleiner, M2, 3, 4, Author              
Preissl, H, Author              
Noppeney, U1, 2, Author              
Affiliations:
1Research Group Cognitive Neuroimaging, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497804              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
4Project group: Cognitive Engineering, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528702              

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 Abstract: How does the brain integrate information within and across sensory modalities to form a unified percept? This question has previously been addressed using transient stimuli, analyzed in the time domain. Alternatively, sensory interactions can be investigated using frequency analyses of steady state responses (SSRs). SSRs are elicited by periodic sensory stimulation (such as frequency modulated tones). In the frequency domain, 'true' signal integration is reflected by non-linear crossmodulation terms (i.e. the sums and differences of the individual SSR frequencies). In addition, two signals may modulate the amplitude of the fundamental and harmonic frequencies of one another. Using visual (V) and auditory (A) SSRs, we investigated whether A and V signals are truly integrated as indexed by crossmodulation terms or simply modulate the expression of each other's dominant frequencies. To manipulate perceptual synchrony, we imposed additional slow modulations on the auditory and visual SSRs either at same or different frequencies. This also enabled us to investigate the integration of two dynamic features within one sensory modality.

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 Dates: 2011-06
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: GianiOBKPN2011
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Title: 17th Annual Meeting of the Organization for Human Brain Mapping (HBM 2011)
Place of Event: Québec City, Canada
Start-/End Date: 2011-06-26 - 2011-06-30

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Title: 17th Annual Meeting of the Organization for Human Brain Mapping (HBM 2011)
Source Genre: Proceedings
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