Studying Brain Dyanmics in Large-Scale Cortical Networks with MEG Imaging and Human Intracerebral...

Speaker: Karim JerbiNeurophysiology of Action and Perception Collège de France CNRS,Paris, France
&
Brain Dynamics and Cognition Lab, INSERM,
Lyon, France Abstract:Increasing evidence from human and non-human primate studies suggests that long-range cerebro-cerebral synchronization might reflect ongoing communication between distant neural populations essential for integrative behaviour. In the first part of this talk I will present the results of an MEG study in which we investigated the task-specific modulation of cerebral oscillations and long-distance cortico-cortical coupling in multiple frequency bands during a sustained visuomotor task. Our results show modulations of oscillatory power in various frequency bands in multiple areas including an increase in high gamma power (60-90 Hz) in motor and premotor areas during visuomotor control. Coherence analysis provides evidence for task-specific increases in low-frequency coherence between the primary motor cortex and multiple cortical and subcortical brain areas forming large-scale functional networks including the fronto-parietal circuit and the cerebello-thalamo-cortical pathway. In the second part of the talk I will provide an overview of some of the ongoing studies performed with intracerebral recordings in humans performing various cognitive tasks. Both online and offline analysis will be presented. The invasive experiments with real-time visual feedback of task-related brain power modulations (/Brain TV/ set-up) are discussed in the context of invasive brain-computer interfaces, neurofeedback as well as its utility basic neuroscience research.Host: Professor Richard Leahy

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Talyia Veal