Mehdi Senoussi

Post-doctoral fellow in the Verguts lab at the Experimental Psychology department of Ghent University (Ghent, Belgium).


senoussi <dot> m <at> gmail <dot> com

I am cognitive (neuro)scientist interested in cognitive control mechanisms at the behavioral and neural level.

For instance our ability to create and manipulate a mental image, attend to a specific feature or sensory modality or invoke a percept from memory. What are the shared mechanisms, resources, and their limits, across these cognitive operations? What are their temporal dynamics? Finally, how and why these processes can be impaired or occasionally fail (e.g. attentional lapses, sustained attention deficits, cognitive control impairments)?

I study these phenomena using psychophysics, neuroimaging (EEG, fMRI), multivariate pattern analyses techniques (MVPA) and modelling.

Short bio.

After completing my masters degree in Paris (CogMaster) I did my PhD under the supervision of Leila Reddy and Rufin VanRullen at the CerCo lab in Toulouse (France). The topic of my thesis was on the effect of learning, at different timescales, on neural representations of visual objects using EEG, fMRI and multivariate pattern analysis techniques.

Following my PhD I started a collaboration with Laura Dugué, at the INCC (Paris) on the behavioral and neural markers of attentional deployment using machine learning and modelling.

From January to December 2017 I held a post-doctoral position at the Human Factors lab of ISAE-Supaéro (french Institute of Space and Aeronautics). The project was on developing methods to study and monitor attentional resources, cross-modal attentional allocation and mental workload with Frederic Dehais and Raphaëlle Roy.

I currently hold a post-doctoral position in the Experimental Psychology department at Ghent University. I am working with Tom Verguts and Durk Talsma on the neural basis of instruction following. We investigate how stimulus-response mappings are quickly set up at the neural level. For that purpose we use EEG connectivity measures to study how synchronization (i.e. phase-locking) through cross-frequency coupling allows to create such functional networks on the fly (see Tom Verguts' model of cognitive control (2017): Binding by random bursts: A computational model of cognitive control). Some preliminary findings from this project were presented at the Society for Neuroscience annual meeting (2018), see below for a reprint of the poster.

Publications

Senoussi, M., Reddy L., VanRullen, R. (in prep.). Electrophysiological predictors of an expected stimulus during visual sequence learning.

Peer-reviewed articles

Senoussi M., Moreland J. C., Busch N., Dugué L. (2019). Attention explores space periodically at the theta frequency. Journal of Vision. (open access)

Senoussi, M., Verdiere, K.J., Bovo, A., Chanel, C.P.C., Dehais, F., Roy, R.N. (2017). Pre-stimulus antero-posterior EEG connectivity predicts performance in a UAV monitoring task. Systems, Man, and Cybernetics (SMC), IEEE International Conference. (pdf)

Senoussi, M., Berry, I., VanRullen, R., Reddy L. (2016). Multivoxel Object Representations in Adult Human Visual Cortex Are Flexible: an Associative Learning Study. Journal of Cognitive Neuroscience. (pdf)

Eickenberg, M., Senoussi, M., Pedregosa, F., Gramfort, A., Thirion, B (2013). Second Order Scattering Descriptors Predict fMRI Activity Due to Visual Textures. Pattern Recognition in Neuroimaging (PRNI), International Workshop. (pdf)


Conference presentations

Senoussi M., Verbeke P., De Loof E., Talsma D., Verguts T. (2019). The role of theta oscillations (4-8hz) in cognitive control: stimulus-response binding in behavior and electroencephalography. 21st meeting of the European Society for Cognitive Psychology (ESCoP) (Tenerife, Spain). (Oral presentation)

Senoussi M., Verbeke P., De Loof E., Talsma D., Verguts T. (2019). Testing a computational model of cognitive control through periodic binding at theta frequency: a behavioural and EEG investigation. Federation of European Neuroscience Societies (FENS), Brain Conference on "Dynamics of the brain: temporal aspects of computation" (Copenhagen, Denmark). (Poster)

Senoussi M., Verbeke P., De Loof E., Talsma D., Verguts T. (2019). Controlled by the beat: Investigating the role of theta oscillations in cognitive control. Belgian Association for Psychological Sciences (BAPS) annual meeting (Liège, Belgium). (Oral presentation)

Senoussi M., Verbeke P., Talsma D., Verguts T. (2018). Electrophysiological markers of instructed sensory-motor mappings: Testing a computational model of cognitive control . Society for Neuroscience annual meeting (San Diego, USA). (Poster) (pdf)

Senoussi M., Talsma D., Verguts T. (2018). Electrophysiological markers of instructed stimulus-response mappings. GDR Vision annual meeting (Paris, France). (Poster)

Senoussi M., Galas L., Busch N., Dugué L. (2018). Comparing the neural dynamics of voluntary feature-based and spatial attention. GDR Vision annual meeting (Paris, France). (Oral presentation)

Senoussi M., Busch N., Galas L., Dugué L. (2018). Comparing the neural dynamics of voluntary feature-based and spatial attention. Visual Science Society annual meeting (St Petersburg, FL, USA). (Poster)

Dugué L., Senoussi M., Moreland J. C., Busch N. (2018). Attention explores space at the theta frequency. Visual Science Society annual meeting (St Petersburg, FL, USA). (Oral Presentation)

Dugué L., Busch N., Senoussi M. (2017). Behavioral rhythms of attentional sampling. European Conference on Visual Perception (Berlin, Germany). (Poster)

Senoussi M., Reddy L., Vanrullen R. (2015). Electrophysiological predictors of an expected stimulus during visual sequence learning. Society for Neuroscience annual meeting (Chicago, USA). (Poster) (pdf)

Senoussi M., Berry I., Vanrullen R., Reddy L. (2014). Object Representations in Human Visual Cortex are Flexible: an Associative Learning study. Visual Science Society annual meeting (St Petersburg, FL, USA). (Oral Presentation)

Ongoing Collaborations

Leila Reddy & Rufin VanRullen at CerCo lab (Toulouse, France) - Visual sequence learning and expectation signals. (EEG, MVPA)

Laura Dugué at INCC (Paris) and Niko Busch at University of Münster (Münster, Germany):

• Decoding EEG correlates of Spatial versus Feature-based attention (EEG, MVPA, Modeling).

Frédéric Dehais & Rasa Gulbinaite & Alban Duprès at ISAE-Supaéro (Toulouse, France) - Neural correlates of cross-modal endogenous attention (EEG, MVPA)

Savannah Cookson at D'Esposito lab (UC Berkeley, USA) - Theta oscillations in working memory: individual differences and task-related theta peak modulation.