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Max Planck Florida Institute scientists create first realistic 3D reconstruction of a brain circuit
Date:12/7/2011

tly correlated with their structure and connectivity, which marks a first step toward understanding basic organizational principles of the brain.

Working with both awake and anesthetized rats, and also examining stained brain slices, the neuroscientists used sophisticated new light microscopy as well as custom designed tools to examine 15,000 neurons of nine identified cell types. Using a painstaking, six-step process, the researchers identified and reconstructed the column's constituent parts using sophisticated software and a range of other new state-of-the-art tools and processes.

Described in a related paper co-authored by Drs. Sakmann and Oberlaender, these new methods, which were developed in part at the Max Planck Florida Institute, allow researchers, for the first time, to simulate electrical signaling in a computer model at subcellular and millisecond resolution.

"We can now quantify the number of neurons of each cell type, their three-dimensional structure, connectivity within these networks, and response to sensory stimulation, in both an anesthetized and awake animal," said Dr. Oberlaender. "Such a quantitative assessment of cortical structure and function is unprecedented and marks a milestone for future studies on mechanistic principles that may underlie signal flow in the brain, during such functions as decision making."


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