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Evaluation of closed-loop feedback system delay a time-critical perspective for neurofeedback training
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-8174-1067
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0003-4298-9550
2018 (engelsk)Inngår i: BIODEVICES 2018 - 11th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018, SciTePress , 2018, s. 187-193Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Neurofeedback in real-time has proven effective when subjects learn to control a BCI. To facilitate learning, a closed-loop feedback system should provide neurofeedback with maximal accuracy and minimal delay. In this article, we propose a modular system for real-time neurofeedback experiments and evaluate its performance as a function of increased stress level applied to the system. The system shows stable behavior and decent performance when streaming with many EEG channels (36-72) and 500-5000 Hz, which is common in BCI setups. With very low data loads (1 channel, 500-1000 Hz) the performance dropped significantly and the system became highly unpredictable. We show that the system delays did not correlate linearly with the stress-level applied to the system, emphasizing the importance of system delay tests before conducting real-time BCI-experiments. 

sted, utgiver, år, opplag, sider
SciTePress , 2018. s. 187-193
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URN: urn:nbn:se:mdh:diva-40554Scopus ID: 2-s2.0-85051747504ISBN: 9789897582776 (tryckt)OAI: oai:DiVA.org:mdh-40554DiVA, id: diva2:1243117
Konferanse
11th International Conference on Biomedical Electronics and Devices, BIODEVICES 2018 - Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018; Funchal, Madeira; Portugal; 19 January 2018 through 21 January 2018
Tilgjengelig fra: 2018-08-30 Laget: 2018-08-30 Sist oppdatert: 2018-08-30bibliografisk kontrollert

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