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Abstract #1879

Exploring the pulse artefact in EEG recordings at 9.4 T magnetic field

Jorge Arrubla 1 , Lukas Breuer 1 , Nuno da Silva 1 , Jrgen Dammers 1 , Irene Neuner 1,2 , and N. Jon Shah 1,3

1 Institute of Neuroscience and Medicine - 4, Forschungszentrum Jlich, Jlich, NRW, Germany, 2 Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Aachen, NRW, Germany, 3 JARA - Faculty of Medicine, RWTH Aachen University, Aachen, NRW, Germany

In this study we investigate components of the pulse artefact in EEG data recorded at 9.4 T using a combination of ICA, ICASSO and CTPS. We found that the pulse artefact can be separated into different deflections, depending on the phase of the heartbeat, which contribute differently to the resulting artefact. It was possible to identify a link between the amplitude of the pulse artefact and the age of our volunteers, suggesting that the pulse artefact has a strong dependence on what we hypothesize is the arterial compliance.

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