Evaluating the Influence of Chromatic and Luminance Stimuli on SSVEPs from Behind-the-Ears and Occipital Areas

Sensors
Alan FlorianoTeodiano Freire Bastos-Filho

Abstract

This work presents a study of chromatic and luminance stimuli in low-, medium-, and high-frequency stimulation to evoke steady-state visual evoked potential (SSVEP) in the behind-the-ears area. Twelve healthy subjects participated in this study. The electroencephalogram (EEG) was measured on occipital (Oz) and left and right temporal (TP9 and TP10) areas. The SSVEP was evaluated in terms of amplitude, signal-to-noise ratio (SNR), and detection accuracy using power spectral density analysis (PSDA), canonical correlation analysis (CCA), and temporally local multivariate synchronization index (TMSI) methods. It was found that stimuli based on suitable color and luminance elicited stronger SSVEP in the behind-the-ears area, and that the response of the SSVEP was related to the flickering frequency and the color of the stimuli. Thus, green-red stimulus elicited the highest SSVEP in medium-frequency range, and green-blue stimulus elicited the highest SSVEP in high-frequency range, reaching detection accuracy rates higher than 80%. These findings will aid in the development of more comfortable, accurate and stable BCIs with electrodes positioned on the behind-the-ears (hairless) areas.

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Citations

Jun 5, 2019·Journal of Neural Engineering·M de Neeling, M M Van Hulle
Feb 13, 2020·Sensors·Malik M Naeem MannanMyung Yung Jeong
Aug 24, 2019·Frontiers in Neuroscience·Soo-In Choi, Han-Jeong Hwang
Oct 20, 2018·Sensors·Fernando TorresAndrés Úbeda
Sep 5, 2019·Sensors·Ibrahim KayaÖzcan Özdamar
Dec 28, 2019·Computer Methods and Programs in Biomedicine·Alan FlorianoTeodiano Freire Bastos-Filho
Dec 18, 2020·Frontiers in Neurorobotics·Yuanlu ZhuPengcheng Li
Dec 31, 2020·Sensors·Xavier DuartFrancisco Morant
Aug 29, 2021·Sensors·Danni Rodrigo De la Cruz-GuevaraEduardo Caicedo-Bravo

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