Our lab does research at the intersection of cognitive neuroscience, computational neuroscience and cognitive psychology.
Using a multimodal approach including neuroimaging (EEG, MEG, TMS, fMRI), computational modeling and behavioral measures, we investigate the link between the spatio-temporal organization of brain oscillations and visual perception and attention.
We use vision as a tool to study cognition in the neuro-typical human brain. Our research axes focus on Behavioral and Brain Rhythms, as well as the development of neuroimaging analytic tools.
Behavioral performance fluctuates rhythmically over time
Despite the impression that our perceptual experience of the world is seamless and continuous across time, this is likely an illusion. Evidence suggests that information is sampled periodically, like successive snapshots taken by a video camera.
Our lab investigates the rhythms of perception and attention. One of the protocol we use is the dense sampling paradigm. With this tool, we have gathered evidence for alpha and theta rhythms in behavioral performance.
see review Kienitz, Schmid and Dugué (2022)
Part of our effort aims at linking behavioral rhythms and brain oscillations. Using EEG, we have demonstrated that the phase, amplitude and frequency of brain oscillations play a role in perception and attention. Using TMS, we have also provided causal evidence in favor of a functional role of brain oscillations in our conscious perceptual experience.
Causal link between brain oscillations and cognition
Fakche, VanRullen, Marque and Dugué (2022)
Brain activity propagates across the cortex
Our ERC funded research focuses on the spatio-temporal organization of oscillations across the cortex, and its role in perception and attention. We develop analytic tools that allow the measurement and characterization of oscillatory traveling waves in human cortex using MEG, EEG and intra-cranial stereotactic EEG. Using sEEG recordings specifically, we recently showed that global phase dynamics dominate in human cortex.
Alexander and Dugué (2024)
Behavioral rhythms propagate across space
Using psychophysics, we demonstrated that behavioral rhythms propagate across the retinotopic space, presumably due to Traveling Waves of activity across early visual regions (e.g., V1) affecting performance in space and time.
Fakche and Dugué (2024)