The Spatial Reach of Brain Wave Synchronization
Presented By: John Myers, PhD
Speaker Biography: I am a postdoctoral Associate in the Department of Neurosurgery at Baylor College of Medicine. I make discoveries about how brain waves support crucial cognitive functions such as attention, perception, and emotional regulation. My favorite tools are those of electrophysiology, such as intracranial EEG and microelectrode arrays that we use to measure neural activity. I also use these tools to help inform the world about the neural basis of mental disorders such as major depression.
Webinar: The Spatial Reach of Brain Wave Synchronization
Webinar Abstract: Brain wave synchronization, also called neuronal coherence, is a fundamental mechanism of communication in the brain, where synchronized field potentials coordinate synaptic and spiking events to support plasticity and learning. Although the spread of field potentials has garnered great interest, little is known about the spatial reach of neuronal coherence. Here we used simultaneous recordings from electrocorticography grids and high-density microelectrode arrays to estimate the spatial reach of neuronal coherence and spike-field coherence (SFC) across frontal, temporal, and occipital cortices during cognitive tasks in humans. We observed the strongest coherence within a 2-3 cm distance from the microelectrode arrays, potentially defining an effective range for local communication. This range was consistent across brain regions, frequencies, and cognitive tasks...
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