Research Topic

Two- and three-dimensional spatiotemporal dynamics in the cerebral cortex revealed with multi-site recordings

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Identifying the functional circuits in the brain has been one of the central issues in neuroscience. As an increasing number of cortical areas and pathways are identified and characterized by anatomical and functional studies, schematic brain-wide diagrams are drawn. Recent recording techniques from wide ...

Identifying the functional circuits in the brain has been one of the central issues in neuroscience. As an increasing number of cortical areas and pathways are identified and characterized by anatomical and functional studies, schematic brain-wide diagrams are drawn. Recent recording techniques from wide cortical areas including high density ECoG, two or three dimensional intracortical electrode arrays and optical methods with voltage sensitive dye not only visualize these diagrams in detail which are essentially defined by point to point relations but also offer unprecedented opportunities of capturing its spatiotemporal dynamics. How such dynamics and underlying neural circuits are embedded over physical space has been getting a spotlight in the field.

Two- and three-dimensional spatiotemporal dynamics such as the propagating cortical waves and physiological interactions between horizontal and laminar connections across a certain volume can only be revealed by the multi-site recordings. To interpret the phenomenon, insights in multiple scales from microscopic single cell level, mesoscopic circuit that is characterized by dynamics of populations or aggregate signals from local areas to macroscopic system level must be integrated.

The understanding of such spatiotemporal dynamics may critically be important to elucidate how the brain embeds information and its flow in multivariate entities, and how such dynamics are related to behavioral and cognitive outcome.

In this research topic, we wish to feature state of the art and review of the following items:
1) The cutting edge recording methods, including latest devices, covering wide cortical areas.
2) The observations of two or three-dimensional activities in various cortical areas and potentially connected structures at different spatial resolutions.
3) The analysis methods to characterize the spatiotemporal structure of the activity pattern of different signal modalities.

We welcome research articles on experimental, theoretical and clinical questions related to the cortical recording and the spatiotemporal patterns.


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