Welcome to the Virtual Presentations area!
We will upload here short and long talks presented at the BrainCrit 2022 conference, as soon as they become ready for publishing. For virtual posters check here.
Talk 2022#Day2-1 – Dietmar PLENZ – Avalanche Scaling in the Synchronization of Cortical Cell Assemblies
By Dietmar Plenz (Bethesda, MD). Neurons in cortex synchronize their spiking in response to local and distant inputs. These synchronized assemblies are fundamental to cortex function, yet basic dynamical aspects about their size and duration are largely unknown. Using 2-photon imaging of neurons in superficial cortex of awake mice, we show that synchronized assemblies organize … Continue reading Talk 2022#Day2-1 – Dietmar PLENZ – Avalanche Scaling in the Synchronization of Cortical Cell Assemblies
Talk 2022#Day2-2 – Woodrow SHEW – Low Dimensional Criticality Embedded in High Dimensional Awake Brain Dynamics
By Woodrow Shew (Fayetteville, AR). The criticality hypothesis offers an explanation of the observed complexity of brain dynamics and is important because of potential computational advantages near criticality. However, in the awake state, when cortex most needs computation, experimental evidence for criticality has been inconsistent, especially when considering spikes of many single neurons measured with … Continue reading Talk 2022#Day2-2 – Woodrow SHEW – Low Dimensional Criticality Embedded in High Dimensional Awake Brain Dynamics
By Samir Suweis (Padova, Italy). The critical brain hypothesis has emerged as an attractive framework to understand neuronal activity, but it is still widely debated. In this talk, I will first present data from a multi-electrodes array in the rat’s cortex and show that power-law neuronal avalanches satisfying the crackling-noise relation coexist with spatial correlations … Continue reading Talk 2022#Day2-4 – Samir SUWEIS – Disentangling the Critical Signatures of Neural Activity
By Bradley Voytek (La Jolla, CA). Perception, action, and cognition depend upon coordinated neural activity. This coordination operates within noisy, distributed neural networks potentially poised on the edge of criticality. These networks change with development, aging, and disease. Extensive field potential and EEG research shows that neural oscillations interact with neuronal spiking, which has been … Continue reading Talk 2022#Day2-5 – Bradley VOYTEK – A Non-Critical Perspective on Criticality
By Simona Olmi (Sesto Fiorentino, Italy). I will first give a brief overview of the next generation neural mass models, which represent a complete new perspective for the development of exact mean field models of heterogeneous spiking networks . Then I will report recent results on the application of this formalism to reproduce relevant phenomena … Continue reading Talk 2022#Day2-6 – Simona OLMI – Next Generation Neural Mass Models
By Orit Peleg (Boulder, CO). Fireflies offer a unique and rare glimpse into animal communication. Their signal comprises a species- specific on/off light pattern repeated periodically, used by individual fireflies to advertise themselves to potential mates. Detecting individuals becomes increasingly challenging at high densities of fireflies. In this talk, I will explore how fireflies approach … Continue reading Talk 2022#Day2-7 – Orit PELEG – Living Orbs of Light: The Physics of Firefly Communication
Keynote 2022#Day2 – Ad AERTSEN – Mechanisms Underlying the Generation of Spatiotemporal Sequences in Spiking Neuronal Networks
By Ad Aertsen (Freiburg, Germany). Spatio-temporal sequences of neuronal activity are observed in many brain regions in a variety of tasks and are thought to form the basis of meaningful behavior. However, mechanisms by which a neuronal network can generate spatiotemporal activity sequences have remained obscure. In my presentation I will present an overview of … Continue reading Keynote 2022#Day2 – Ad AERTSEN – Mechanisms Underlying the Generation of Spatiotemporal Sequences in Spiking Neuronal Networks
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 , to maximize dynamical range and computational capabilities. In humans, sleep plays a crucial role to re-tune the system towards criticality . We explore neural avalanches, and the scaling relation … Continue reading Spotlight 2022#4 – Silvia SCARPETTA – Critical Brain Dynamics in EEG During Sleep
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
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