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Authors: Eduardo de Queiroz Braga 1 ; Carlos Julio Tierra-Criollo 1 and Gilberto Mastrocola Manzano 2

Affiliations: 1 UFMG, Brazil ; 2 Clinical Neurophysiology Laboratory , UNIFESP, Brazil

ISBN: 978-989-8111-18-0

Keyword(s): SOBI-RO, somatosensory system, artefacts.

Related Ontology Subjects/Areas/Topics: Applications and Services ; Biomedical Engineering ; Biomedical Signal Processing ; Computer Vision, Visualization and Computer Graphics ; Medical Image Detection, Acquisition, Analysis and Processing

Abstract: The psychophysical evaluation of the sensibility of the thin and thick fibers with sinusoidal current stimulation was proposed in the 80s. After that, researches observed that 5 Hz stimulus would be related to the thin unmyelinated fiber. This work aims a quantitative analysis of the cerebral cortex response to 5 Hz stimulus, through the identification of the latency components of the evoked potential (EP) that were estimated by the coherent mean after remove the stimulus artefact by using the Independent Component Analysis. Electroencephalography (EEG) signals were collected at Cz electrode (10-20 International Standard System) of 5 volunteers. The EP estimated with 5 Hz stimulus using the Second Order Blind Identification associated with Robust Orthogonalization (SOBI-RO) associated with the coherent mean presented the following components: N1 = 104 ms (one volunteer), P1 = 179 ms (four volunteers) and N2 = 234 ms (three volunteers), P2 = 280 ms (three volunteers) and N3 = 493 ms (a ll volunteers). The SOBI-RO techniques can be a very useful tool in artefacts and noise reduction on the EP estimation. (More)

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Paper citation in several formats:
de Queiroz Braga E.; Julio Tierra-Criollo C.; Mastrocola Manzano G. and (2008). SOBI WITH ROBUST ORTHOGONALIZATION TO REMOVE THE ARTEFACT STIMULUS IN EVOKED POTENTIAL - 5Hz Current Sinusoidal Stimulus.In Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2008) ISBN 978-989-8111-18-0, pages 273-276. DOI: 10.5220/0001066702730276

@conference{biosignals08,
author={Eduardo {de Queiroz Braga} and Carlos {Julio Tierra{-}Criollo} and Gilberto {Mastrocola Manzano}},
title={SOBI WITH ROBUST ORTHOGONALIZATION TO REMOVE THE ARTEFACT STIMULUS IN EVOKED POTENTIAL - 5Hz Current Sinusoidal Stimulus},
booktitle={Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2008)},
year={2008},
pages={273-276},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001066702730276},
isbn={978-989-8111-18-0},
}

TY - CONF

JO - Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2008)
TI - SOBI WITH ROBUST ORTHOGONALIZATION TO REMOVE THE ARTEFACT STIMULUS IN EVOKED POTENTIAL - 5Hz Current Sinusoidal Stimulus
SN - 978-989-8111-18-0
AU - de Queiroz Braga, E.
AU - Julio Tierra-Criollo, C.
AU - Mastrocola Manzano, G.
PY - 2008
SP - 273
EP - 276
DO - 10.5220/0001066702730276

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