Frontiers in Human Neuroscience (Jul 2015)

Space distribution of EEG responses to hanoi-moving visual and auditory stimulation with Fourier Independent Component Analysis

  • Shijun eLi,
  • Yi eWang,
  • Guangyu eBin,
  • Xiaoshan eHuang,
  • Dan eZhang,
  • Gang eLiu,
  • Yanwei eLv,
  • Xiaorong eGao,
  • Shangkai eGao,
  • Lin eMa

DOI
https://doi.org/10.3389/fnhum.2015.00405
Journal volume & issue
Vol. 9

Abstract

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Background and objective: The relationship between EEG source signals and action-related visual and auditory stimulation is still not well understood. The objective of this study was to identify EEG source signals and their associated action-related visual and auditory responses, especially independent components of EEG.Methods: A hand-moving-Hanoi video paradigm was used to study neural correlates of the action-related visual and auditory information processing determined by mu rhythm (8-12 Hz) in 16 healthy young subjects. Independent component analysis (ICA) was applied to identify separate EEG sources, and further computed in the frequency domain by applying-Fourier transform ICA (F-ICA).Results: F-ICA found more sensory stimuli-related independent components located within the sensorimotor region than ICA did. The total number of independent components of interest from F-ICA was 768, twice that of 384 from traditional time-domain ICA (p0.05).Conclusions: These results support the hypothesis that mu rhythm was sensitive to detection of the cognitive expression, which could be reflected by the function in the parietal lobe sensory-motor region. The results of this study could potentially be applied into early diagnosis for those with visual and hearing impairments in the future.

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