INTRODUCTION Cardiac and respiratory fluctuations (physiological noise) are known to be confounding signals in the detection of cortical activation by fMRI. The standard correction method RETROICOR [1] has been used to perform a global correction by folding the whole time series (TS) into only one signal cycle and to use this global template to correct each individual cycle. We extended RETROIC...

This paper proposes an improved thermal asperity (TA) detection and correction technique for perpendicular recording channels, which performs better than the conventional one. The TA detection method is a threshold-based approach, while the TA correction method is performed by averaging the readback signal and applying a curve-fitting technique to estimate the TA signal. Then, the corrected rea...

This paper presents a novel approach for removing gradient artefacts from the EEG signal recorded during continuous EEG-fMRI, which are influenced by transient head movements of the subject within the magnetic scanner. Transient head movements provoke abrupt changes in the gradient artefact waveform, in such a way that they compromise the estimation of an artefact waveform to be subtracted and ...