Rhythmic neuronal activity of multiple frequency bands has been described in many brain areas and attributed to numerous brain functions. Among these, little is known about the mechanism and role of infra-slow oscillations, which have been demonstrated recently in the mouse accessory olfactory bulb (AOB). Along with prolonged responses to stimuli and distinct network connectivity, they inexplicably affect the AOB processing of social relevant stimuli. Here, we show that assemblies of AOB mitral cells are synchronized by lateral interactions through chemical and electrical synapses. Using a network model, we demonstrate that the synchronous oscillations in these assemblies emerge from interplay between intrinsic membrane properties and network connectivity. As a consequence, the AOB network topology, in which each mitral cell receives input from multiple glomeruli, enables integration of chemosensory stimuli over extended time scales by interglomerular synchrony of infra-slow bursting. These results provide a possible functional significance for the distinct AOB physiology and topology. Beyond the AOB, this study presents a general model for synchronous infra-slow bursting in neuronal networks.
|Number of pages||17|
|Journal||Journal of Neuroscience|
|State||Published - 8 Mar 2017|
Bibliographical noteFunding Information:
This work was supported by the Israel Science Foundation (Grant 1350/12 to S.W.) and the Gatsby Charitable Foundation.
© 2017 the authors.
- Calcium imaging
- Infra-slow bursting
- Network model
- Sensory integration
ASJC Scopus subject areas
- Neuroscience (all)