About the Authors

Xiaogeng Wan

Affiliation Department of Mathematics and Centre for Complexity Science, Imperial College London, London, United Kingdom

Björn Crüts

Affiliation Brainmarker BV, Molenweg 15a, Gulpen, The Netherlands

Henrik Jeldtoft Jensen

h.jensen@imperial.ac.uk

Affiliation Department of Mathematics and Centre for Complexity Science, Imperial College London, London, United Kingdom

Competing Interests

At the time of the study, BC was consultant of Brainmarker BV, a company that integrates EEG hardware and software in psychiatry and psychology practices and hospitals for the purpose of predicting and evaluating treatment outcomes (see brainmarker.com for more information). For this study the CE certified EEG hardware produced by Brainmarker was used, but the study did not relate to any marketing or sales activity of Brainmarker BV. Brainmarker made the different EEG machines available for the study and provided the raw data for further analysis. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Analyzed the data: XW BC HJJ. Wrote the paper: XW BC HJJ.