Effect of Synaptic Connectivity on Long-Range Synchronization of Fast Cortical Oscillations (original) (raw)

Cortical gamma oscillations in the 20-to 80-Hz range are crucial for attentiveness and sensory perception yet exhibit synchronization across distances despite synaptic delays. This study employs in vivo recordings and large-scale cortical network models to explore how network geometry influences long-range synchronization of these fast oscillations. Findings suggest that multiple independent synaptic pathways within a two-dimensional network promote precise phase synchronization of gamma oscillations, effectively resulting in nearly zero phase delays across remote sites. These insights propose a shared mechanism underlying oscillatory synchronization in neural networks.