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J Neurophysiol. 2012 Apr;107(7):1979-95. doi: 10.1152/jn.00625.2011. Epub 2011 Dec 14.

A system for recording neural activity chronically and simultaneously from multiple cortical and subcortical regions in nonhuman primates.

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Massachusetts Institute of Technology, 43 Vassar St., Bldg. 46-6133, Cambridge, MA 02139, USA.


A major goal of neuroscience is to understand the functions of networks of neurons in cognition and behavior. Recent work has focused on implanting arrays of ∼100 immovable electrodes or smaller numbers of individually adjustable electrodes, designed to target a few cortical areas. We have developed a recording system that allows the independent movement of hundreds of electrodes chronically implanted in several cortical and subcortical structures. We have tested this system in macaque monkeys, recording simultaneously from up to 127 electrodes in 14 brain regions for up to one year at a time. A key advantage of the system is that it can be used to sample different combinations of sites over prolonged periods, generating multiple snapshots of network activity from a single implant. Used in conjunction with microstimulation and injection methods, this versatile system represents a powerful tool for studying neural network activity in the primate brain.

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