Online Decoding in the Auditory Cortex using Functional Near-infrared Spectroscopy

Hendrik Santosa, Arjon Turnip

2019

Abstract

The aim of this study is to decode the hemodynamic response evoked by six sound categories (generated from various speech and non-speech sounds) using functional near-infrared spectroscopy (fNIRS). fNIRS is used to examine the concentration changes of oxy-hemoglobin (HbO) and deoxy-hemoglobin (HbR) in the bilateral auditory cortex from 7 healthy subjects. For offline processing, linear discriminant analysis (LDA) classifier is utilized to classify various sound categories. For an online processing, general autoregressive linear model with iteratively reweighed least squares (AR-IRLS) algorithm for single trials is investigated. In the results, we found that the overall two-class classification accuracies were 71.3 ± 8.0% (offline) and 73.2 ± 14.7% (online) with two different schemes. The computation time for classification took less than two seconds, which demonstrates the potential of using an online AR-IRLS classification for decoding what people hear in daily life.

Paper Citation

in Harvard Style

Santosa H. and Turnip A. (2019). Online Decoding in the Auditory Cortex using Functional Near-infrared Spectroscopy.In Proceedings of the International Conference on Health Informatics and Medical Application Technology - Volume 1: ICHIMAT, ISBN 978-989-758-460-2, pages 333-340. DOI: 10.5220/0009512203330340

in Bibtex Style

@conference{ichimat19,
author={Hendrik Santosa and Arjon Turnip},
title={Online Decoding in the Auditory Cortex using Functional Near-infrared Spectroscopy},
booktitle={Proceedings of the International Conference on Health Informatics and Medical Application Technology - Volume 1: ICHIMAT,},
year={2019},
pages={333-340},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0009512203330340},
isbn={978-989-758-460-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Health Informatics and Medical Application Technology - Volume 1: ICHIMAT,
TI - Online Decoding in the Auditory Cortex using Functional Near-infrared Spectroscopy
SN - 978-989-758-460-2
AU - Santosa H.
AU - Turnip A.
PY - 2019
SP - 333
EP - 340
DO - 10.5220/0009512203330340