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Multiple Equivalent Current Dipole Source Localization of Visual Event-Related Potentials During Oddball Paradigm With Motor Response

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Abstract

Event-related potentials (ERPs) during a visual oddball paradigm with button-pressing responses were recorded in 12 right-handed subjects from 32 scalp electrodes. The single equivalent current dipole (ECD) of the target C1 (weak occipito-parietal negativity from 30-80ms) was consistently located at the primary visual cortex. From the 4-ECD localization of the target P1/N1 (temporally coincident frontal positivity and occipito-temporal negativity), it was suggested that this complex reflected activities from distributed sources along both dorsal occipito-parietal and ventral occipito-temporal areas. The stable multiple ECD solutions for the target P3b were chosen as those including the left primary motor and/or sensorimotor dipole and satisfying goodness-of-fit (GOF) of more than 98% and confidence limit (CL) of less than 1mm. The obtained frontal dipoles were discussed in terms of visual working memory and sustained attention in reference to the previous PET, fMRI and MEG studies. The distributed multiple ECDs may suggest that P3 should be interpreted as being the embodiment of the cortico-limbic-thalamic network which involves Halgren and Marinkovic's emotional and behavioral model and Mesulam's attentional circuit.

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Authors and Affiliations

  1. Fundamental Research Laboratories, NEC Corporation, Japan

    Toshimasa Yamazaki, Ken-ichi Kamijo, Tomoharu Kiyuna & Yoko Takaki

  2. Personal C&C Development Laboratories, 1st Personal C&C Operation Unit, NEC Corporation, Japan

    Akihisa Kenmochi

  3. Human Media Research Laboratories, NEC Corporation, Japan

    Shin-ichi Fukuzumi

  4. Yokohama City University School of Medicine Department of Neurology, Japan

    Yoshiyuki Kuroiwa

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  1. Toshimasa Yamazaki
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Yamazaki, T., Kamijo, Ki., Kenmochi, A. et al. Multiple Equivalent Current Dipole Source Localization of Visual Event-Related Potentials During Oddball Paradigm With Motor Response. Brain Topogr 12, 159–175 (2000). https://doi.org/10.1023/A:1023467806268

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