Breakfast & Science Seminar 25

The fifth of the 2022 Breakfast and Science Seminar Series will be hybrid – both virtual and on-site.

Date and time: Tuesday May 31st, 2022 – 9:00 to 10:30 CET

Location:  Virtual on Zoom and on-site CIBM Seminar Room, EPFL campus, 1015 Lausanne.


09:00 – 09:15 Welcome & Introduction

09:15 – 10:00  Combining EEG microstates with machine learning to identify brain states and traits

Tomas Ros

Tomas Ros,
Research Staff Scientist CIBM EEG (HUG-UNIGE)


EEG microstates have been traditionally used to estimate group-wise differences between clinical populations and/or behavioral conditions. In this talk, I will present our recent attempts to use EEG microstates in the machine learning context, in order to classify individual brain states and traits. I will begin by introducing a novel framework involving a spectral decomposition of microstate dynamics, which significantly expands the informational space available for machine learning. This approach will be validated in the context of brain state classification, both behaviorally (e.g. eyes open vs eyes closed) and in clinical populations (e.g. post-traumatic stress disorder). Finally, I will discuss how such EEG microstate measures can be deployed in a closed-loop setting with the goal of training particular brain states in real-time, also known as neurofeedback.

About the Speaker

Tomas Ros graduated with an honors in physics BSc degree from Imperial College London. His PhD at University of London was focused on therapeutic applications of brain-computer interfaces, namely closed-loop neurofeedback. During this time, he pioneered the use of transcranial magnetic stimulation for probing neurofeedback-induced plasticity, demonstrating changes in excitation/inhibition balance after a single training session. During his first postdoc at the University of Western Ontario, he helped develop an EEG neurofeedback protocol for reducing levels of mind-wandering, which was underpinned by connectivity changes within intrinsic brain networks. This led to several translational studies of this protocol in patients with post-traumatic stress disorder (PTSD), revealing positive effects on well-being. He then moved to the University of Geneva, first collaborating on projects involving neurofeedback for post-stroke rehabilitation. He is presently research staff scientist at the CIBM, leading a team investigating the impact of neurofeedback on attention-deficit hyperactivity disorder (ADHD), affiliated with NCCR-Synapsy and the Functional Brain Mapping Lab.

10:00-10:30  CIBM news and networking  

Christoph MichelSeminar Chair

Christoph Michel, 
Head, CIBM EEG HUG-UNIGE Clinical and Translational Neuroimaging Section

Please register by Monday May 30, 2022, 12:00

To join us on Zoom, please register at the following link:–prjsiGdLCnbzjiKSMTeIRJGe0Nwpo

To attend on site, please register here, as places are limited:

After registering, you will receive a confirmation email containing information about joining the meeting.

We look forward to seeing you soon.



31 May 2022


9:00 am - 10:30 am

More Info

EPFL CIBM Seminar Room


EPFL CIBM Seminar Room

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