Spotlight 2022#9 – Asem WARDAK – Extended Anderson Criticality in Heavy-Tailed Neural Networks

By Asem Wardak (Harvard Medical School, Cambridge, MA). November 9th, 2022. We investigate the emergence of complex dynamics in networks with heavy-tailed connectivity by developing a non-Hermitian random matrix theory. We uncover the existence of an extended critical regime of spatially multifractal fluctuations between the quiescent and active phases. This multifractal critical phase combines features … Continue reading Spotlight 2022#9 – Asem WARDAK – Extended Anderson Criticality in Heavy-Tailed Neural Networks

Spotlight 2022#8 – Marie-Constance CORSI – Exploiting Brain Critical Dynamics to Inform Brain-Computer Interface Performance

By Marie-Constance Corsi (Paris Brain Institute, Paris, France). November 9th, 2022. The reconfiguration of large-scale interactions among multiple brain regions is characterized by aperiodic perturbations, called “Neuronal Avalanches”, which can be tracked non-invasively as they expand across the brain. As such, learning a new task might affect the path of propagation of neuronal avalanches.Brain-Computer Interfaces … Continue reading Spotlight 2022#8 – Marie-Constance CORSI – Exploiting Brain Critical Dynamics to Inform Brain-Computer Interface Performance

Spotlight 2022#7 – Megan BOUCHER-ROUTHIER – Deep Generative Adversarial Networks Capturing Complex Spiral Waves in Disinhibited Cortical Circuits

By Megan Boucher-Routhier (University of Ottawa,ON). November 9th, 2022. In cortical circuits, disinhibited activity yields complex spatiotemporal patterns of fluctuation. One example of this occurs during interictal epileptic brain activity where spiral waves are generated, consisting of complex neural activity that rotates around a center of mass. Here, we investigated the complexity of neural activity … Continue reading Spotlight 2022#7 – Megan BOUCHER-ROUTHIER – Deep Generative Adversarial Networks Capturing Complex Spiral Waves in Disinhibited Cortical Circuits

Spotlight 2022#6 – Adrian PONCE-ALVAREZ – Critical Scaling of Whole-Brain Activity

By Adrian Ponce Alvarez (Polytechnical University of Catalunya, Barcelona, Spain). November 8th, 2022. Scale invariance is a characteristic of neural activity and how it emerges from neural interactions remains a fundamental question. Here, we studied the relation between scale-invariant brain dynamics and structural connectivity by analyzing human resting-state (rs-) fMRI signals, together with diffusion MRI … Continue reading Spotlight 2022#6 – Adrian PONCE-ALVAREZ – Critical Scaling of Whole-Brain Activity

Spotlight 2022#5 – Davor CURIC – Neural Desynchronization Spreading During Sleep-like States Reveals Critical Dynamics

By Davor Curic (University of Calgary, AB). November 8th, 2022. Sleep dynamics have been described as a switching between two broad states; non-rapid eye movement sleep (nREM), which is associated with high delta power thought to originate from widespread neuronal synchronization, and REM, where-in neuronal desynchronization produces high theta power reminiscent of waking behavior. For … Continue reading Spotlight 2022#5 – Davor CURIC – Neural Desynchronization Spreading During Sleep-like States Reveals Critical Dynamics

Spotlight 2022#4 – Silvia SCARPETTA – Critical Brain Dynamics in EEG During Sleep

By Silvia Scarpetta (University of Salerno, Italy). November 8th, 2022. Recent experimental results and theoretical models have supported the idea that brain self-organizes to criticality [1], to maximize dynamical range and computational capabilities. In humans, sleep plays a crucial role to re-tune the system towards criticality [2]. We explore neural avalanches, and the scaling relation … Continue reading Spotlight 2022#4 – Silvia SCARPETTA – Critical Brain Dynamics in EEG During Sleep

Spotlight 2022#3 – John BEGGS – Quasicritical Brain Dynamics

By John Beggs (Indiana University, Bloomington, IN). November 7th, 2022. Much evidence seems to suggest the cortex operates near a critical point, yet a single set of exponents defining its universality class has not been found. In fact, when critical exponents are estimated from data, they widely differ across species, individuals of the same species, … Continue reading Spotlight 2022#3 – John BEGGS – Quasicritical Brain Dynamics

Spotlight 2022#2 – Matthieu AGUILERA – Assessing functional system’s dynamics through longitudinal EEG recordings in a new mouse model of early Alzheimer’s disease

By Matthieu Aguilera (University of Strasbourg, France). November 7th, 2022. Alzheimer’s disease (AD) is a neurodegenerative pathology characterized by a progressive and irreversible deterioration of cognitive functions, especially memory. A challenge in current research on AD is to find a reliable and early marker of the disease. Recently, our team showed that the new humanized … Continue reading Spotlight 2022#2 – Matthieu AGUILERA – Assessing functional system’s dynamics through longitudinal EEG recordings in a new mouse model of early Alzheimer’s disease

Spotlight 2022#1 – Hilgo BRUINING – Criticality at the core of precision medicine for neurodevelopmental disorders

By Hilgo Bruining (University Medical Center, Amsterdam, the Netherlands). November 7th, 2022. New treatment developments for neurodevelopmental such as autism have failed to reach clinical implementation due to inter- and intraindividual variability across biological and clinical dimensions. To resolve this situation, we propose to use the framework of excitation/inhibition imbalances in resting-state EEG measurements to … Continue reading Spotlight 2022#1 – Hilgo BRUINING – Criticality at the core of precision medicine for neurodevelopmental disorders

Poster 2022#1 – Helen S. ANSELL – Structural Criticality of 3D Brain Volumes

The highly complex structure of the brain is integral to its function, yet many aspects of the physical structure of the brain and how they aid its function remain poorly understood. Here we utilize millimeter-scale 3D reconstructions of brain volumes [1-3] to examine physical properties of the structure of the brain at the cellular level. … Continue reading Poster 2022#1 – Helen S. ANSELL – Structural Criticality of 3D Brain Volumes