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Limited By:	Subject = electroencephalography;

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Combining fNIRS and EEG to improve motor cortex activity classification during an imagined movement-based task (2011)

Leamy, Darren J.; Collins, Ronan; Ward, Tomas E.

Combining fNIRS and EEG to improve motor cortex activity classification during an imagined movement-based task (2011)

Leamy, Darren J.; Collins, Ronan; Ward, Tomas E.

Abstract:

This work serves as an initial investigation into improvements to classification accuracy of an imagined movement-based Brain Computer Interface (BCI) by combining the feature spaces of two unique measurement modalities: functional near infrared spectroscopy (fNIRS) and electroencephalography (EEG). Our dual-modality system recorded concurrent and co-locational hemodynamic and electrical responses in the motor cortex during an imagined movement task, participated in by two subjects. Offline analysis and classification of fNIRS and EEG data was performed using leave-one-out cross-validation (LOOCV) and linear discriminant analysis (LDA). Classification of 2-dimensional fNIRS and EEG feature spaces was performed separately and then their feature spaces were combined for further classification. Results of our investigation indicate that by combining feature spaces, modest gains in classification accuracy of an imagined movement-based BCI can be achieved by employing a supplemental meas...

http://mural.maynoothuniversity.ie/4365/

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Experiences and insights from the collection of a novel multimedia EEG dataset (2019)

Healy, Graham; Wang, Zhengwei; Ward, Tomás E.; Smeaton, Alan F.; Gurrin, Cathal

Experiences and insights from the collection of a novel multimedia EEG dataset (2019)

Healy, Graham; Wang, Zhengwei; Ward, Tomás E.; Smeaton, Alan F.; Gurrin, Cathal

Abstract:

There is a growing interest in utilising novel signal sources such as EEG (Electroencephalography) in multimedia research. When using such signals, subtle limitations are often not readily apparent without significant domain expertise. Multimedia research outputs incorporating EEG signals can fail to be replicated when only minor modifications have been made to an experiment or seemingly unimportant (or unstated) details are changed. This can lead to overoptimistic or overpessimistic viewpoints on the potential real-world utility of these signals in multimedia research activities. This paper describes an EEG/MM dataset and presents a summary of distilled experiences and knowledge gained during the preparation (and utilisiation) of the dataset that supported a collaborative neural-image labelling benchmarking task. The goal of this task was to collaboratively identify machine learning approaches that would support the use of EEG signals in areas such as image labelling and multimedia...

http://doras.dcu.ie/24649/

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The Unfolding of the Relational Operant: A Real-time Analysis Using Electroencephalography and Reaction Time Measures (2004)

Roche, Bryan; Linehan, Conor; Ward, Tomas E.; Dymond, Simon; Rehfeldt, Ruth-Anne

The Unfolding of the Relational Operant: A Real-time Analysis Using Electroencephalography and Reaction Time Measures (2004)

Roche, Bryan; Linehan, Conor; Ward, Tomas E.; Dymond, Simon; Rehfeldt, Ruth-Anne

Abstract:

The current study attempted to capture in real time the unfolding of the relational operant using electroencephalography (EEG) and reaction time measures. Participants were exposed to relational pretraining to establish the contextual cues of Same and Opposite for two arbitrary stimuli. These cues were then used to establish a series of contextually controlled discriminations in order to create a simple relational network among a series of arbitrary stimuli. During the test for derived relations of Same and Opposite, EEG and reaction time measures were recorded for each individual test task during the acquisition of a stable derived relational response pattern. Participants were then exposed to an identical set of relational training and testing tasks with the important difference that an entirely different set of stimuli was used. EEG and reaction time measures were again recorded during the relational test phase. Results showed that reaction times decreased for all subjects across...

http://mural.maynoothuniversity.ie/418/

Displaying Results 1 - 3 of 3 on page 1 of 1