Home // COGNITIVE 2015, The Seventh International Conference on Advanced Cognitive Technologies and Applications // View article
Authors:
Takahiro Yamanoi
Yoshinori Tanaka
Hisashi Toyoshima
Toshimasa Yamazaki
Shin-ich Ohnishi
Keywords: Independent Component Analysis; Electroencephalogram; Equivalent Current Dipole Localization Method; Brain Activity.
Abstract:
The authors measured electroencephalograms (EEGs) from subjects when recalling several types of images. Each image presented consisted of four types of line drawings of body parts. During these experiments, the electrodes were fixed on the scalp of the subjects. However, recorded EEGs had multiple components, including muscle and brain potentials. Recently, independent component analysis (ICA) has been used for EEG analysis. ICA is a technical method for solving the so-called “cocktail party problem”. We applied ICA to single-trial EEGs for preprocessing to obtain actual brain activity, and then attempted to estimate spatiotemporal brain activity using equivalent current dipole source localization (ECDL). Our results were almost identical with previous results using ECDL analysis on event Related Potentials (ERPs). In this paper, we present experiments suggesting that ICA is effective as a preprocessing method for estimation of spatiotemporal brain activity using the ECDL and three-dipole model.
Pages: 81 to 84
Copyright: Copyright (c) IARIA, 2015
Publication date: March 22, 2015
Published in: conference
ISSN: 2308-4197
ISBN: 978-1-61208-390-2
Location: Nice, France
Dates: from March 22, 2015 to March 27, 2015