SPECTER v2

SPECTER - the Signal sPECtrum Tensor decomposition and Eye blink Removal algorithm

SPECTER (the Signal sPECtrum Tensor decomposition and Eye blink Removal) is a novel algorithm designed to detect and eliminate eye blink-related artifacts from electroencephalogram (EEG) recordings by using a combination of tensor decomposition and signal reconstruction from the amplitude spectrum. A key advantage of SPECTER is that it does not require information from an electrooculogram (EOG).

The function requires access to the following toolboxes/scripts:

1. Rasmus Bro (2025). The N-way Toolbox (https://www.mathworks.com/matlabcentral/fileexchange/1088-the-n-way-toolbox), MATLAB Central File Exchange. Retrieved August 4, 2025.

https://uk.mathworks.com/matlabcentral/fileexchange/1088-the-n-way-toolbox

2. EEGlab plugin ADJUST

semi-automatic selection of eye- blink related components

https://sccn.ucsd.edu/eeglab/plugin_uploader/plugin_list_all.php

3. ADMMGLA algorithm for the spectrum-to-signal transformation

Y. Masuyama, K. Yatabe, and Y. Oikawa, "Griffin-Lim Like Phase Recovery via Alternating Direction Method of Multipliers," IEEE Signal Process. Lett., 2019.

https://github.com/dendisuhubdy/ADMMGLA/tree/cpp/src/Matlab

4. Topographic EEG/MEG plot

Víctor Martínez-Cagigal (2025). Topographic EEG/MEG plot (https://www.mathworks.com/matlabcentral/fileexchange/72729-topographic-eeg-meg-plot), MATLAB Central File Exchange. Retrieved August 4, 2025.

https://uk.mathworks.com/matlabcentral/fileexchange/72729-topographic-eeg-meg-plot?s_tid=srchtitle

For more information:

ROŠŤÁKOVÁ, Z. – ROSIPAL, R. – TREJO, L.J. SPECTER – The Signal sPECtrum Tensor decomposition and Eye blink Removal algorithm. In Biomedical Signal Processing and Control, 2025, vol. 99, art. no. 106889. ISSN 1746-8094. https://doi.org/10.1016/j.bspc.2024.106889

ROŠŤÁKOVÁ, Z. – ROSIPAL, R. Deflation properties in tensor-based eye blink removal algorithm. In Statistical Papers, 2025, vol. 66, art. no. 91. ISSN 0932-5026. https://doi.org/10.1007/s00362-025-01714-w

ROŠŤÁKOVÁ, Z. – ROSIPAL, R. Introducing SPECTER 2.0 – an enhanced version of the tensor based eye blink removal algorithm. In Proceedings of the 15th International Conference on Measurement. Editors A. Dvurečenskij, J. Maňka, J. Švehlíková, V. Witkovský. – Bratislava, Slovakia : Institute of Measurement Science, SAS, 2025, p. 53-56. ISBN 978-80-69159-01-3.

This research was supported by the EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under the project No. 09I03-03-V04-00205.