SPoC: A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters

Sven Dähne, Frank C. Meinecke, Stefan Haufe, Johannes Höhne, Michael Tangermann, Klaus Muller, Vadim V. Nikulin

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Previously, modulations in power of neuronal oscillations have been functionally linked to sensory, motor and cognitive operations. Such links are commonly established by relating the power modulations to specific target variables such as reaction times or task ratings. Consequently, the resulting spatio-spectral representation is subjected to neurophysiological interpretation. As an alternative, independent component analysis (ICA) or alternative decomposition methods can be applied and the power of the components may be related to the target variable. In this paper we show that these standard approaches are suboptimal as the first does not take into account the superposition of many sources due to volume conduction, while the second is unable to exploit available information about the target variable. To improve upon these approaches we introduce a novel (supervised) source separation framework called Source Power Comodulation (SPoC). SPoC makes use of the target variable in the decomposition process in order to give preference to components whose power comodulates with the target variable. We present two algorithms that implement the SPoC approach. Using simulations with a realistic head model, we show that the SPoC algorithms are able extract neuronal components exhibiting high correlation of power with the target variable. In this task, the SPoC algorithms outperform other commonly used techniques that are based on the sensor data or ICA approaches. Furthermore, using real electroencephalography (EEG) recordings during an auditory steady state paradigm, we demonstrate the utility of the SPoC algorithms by extracting neuronal components exhibiting high correlation of power with the intensity of the auditory input. Taking into account the results of the simulations and real EEG recordings, we conclude that SPoC represents an adequate approach for the optimal extraction of neuronal components showing coupling of power with continuously changing behaviorally relevant parameters.

Original languageEnglish
Pages (from-to)111-122
Number of pages12
JournalNeuroImage
Volume86
DOIs
Publication statusPublished - 2014 Feb 1

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Keywords

  • ASSEP
  • EEG
  • MEG
  • Oscillations
  • Source power comodulation
  • SPoC

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Neurology

Cite this

Dähne, S., Meinecke, F. C., Haufe, S., Höhne, J., Tangermann, M., Muller, K., & Nikulin, V. V. (2014). SPoC: A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters. NeuroImage, 86, 111-122. https://doi.org/10.1016/j.neuroimage.2013.07.079

SPoC : A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters. / Dähne, Sven; Meinecke, Frank C.; Haufe, Stefan; Höhne, Johannes; Tangermann, Michael; Muller, Klaus; Nikulin, Vadim V.

In: NeuroImage, Vol. 86, 01.02.2014, p. 111-122.

Research output: Contribution to journalArticle

Dähne, S, Meinecke, FC, Haufe, S, Höhne, J, Tangermann, M, Muller, K & Nikulin, VV 2014, 'SPoC: A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters', NeuroImage, vol. 86, pp. 111-122. https://doi.org/10.1016/j.neuroimage.2013.07.079
Dähne, Sven ; Meinecke, Frank C. ; Haufe, Stefan ; Höhne, Johannes ; Tangermann, Michael ; Muller, Klaus ; Nikulin, Vadim V. / SPoC : A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters. In: NeuroImage. 2014 ; Vol. 86. pp. 111-122.
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