Toward FRP-Based Brain-Machine Interfaces-Single-Trial Classification of Fixation-Related Potentials

PloS One
Andrea FinkeHelge Ritter

Abstract

The co-registration of eye tracking and electroencephalography provides a holistic measure of ongoing cognitive processes. Recently, fixation-related potentials have been introduced to quantify the neural activity in such bi-modal recordings. Fixation-related potentials are time-locked to fixation onsets, just like event-related potentials are locked to stimulus onsets. Compared to existing electroencephalography-based brain-machine interfaces that depend on visual stimuli, fixation-related potentials have the advantages that they can be used in free, unconstrained viewing conditions and can also be classified on a single-trial level. Thus, fixation-related potentials have the potential to allow for conceptually different brain-machine interfaces that directly interpret cortical activity related to the visual processing of specific objects. However, existing research has investigated fixation-related potentials only with very restricted and highly unnatural stimuli in simple search tasks while participant's body movements were restricted. We present a study where we relieved many of these restrictions while retaining some control by using a gaze-contingent visual search task. In our study, participants had to find a target obje...Continue Reading

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Citations

May 31, 2017·Journal of Neural Engineering·M A WenzelB Blankertz
Oct 30, 2016·PloS One·Markus A WenzelBenjamin Blankertz
May 16, 2019·Language, Cognition and Neuroscience·Nicole A HimmelstossStefan Hawelka
Nov 11, 2017·Journal of Neural Engineering·Jan-Eike GoleniaBenjamin Blankertz
Sep 6, 2018·Scientific Reports·Fotis P KalaganisNikos A Laskaris
Dec 1, 2020·Frontiers in Human Neuroscience·Dennis WobrockHelge Ritter
May 18, 2020·NeuroImage·Christian PfeifferNicolas Langer
Oct 17, 2019··Lisa-Marie Vortmann, Lisa-Marie Vortmann
Mar 9, 2017··Yuri O. NuzhdinAnastasia A. Fedorova

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Methods Mentioned

BETA
feature extraction
PCA

Software Mentioned

EEGLAB
MATLAB
EyeFollower

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Brain-Computer Interface

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