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Dr. Jorge Riera
Tohoku University, Japan
Florida International University, USA

Riera

Electrophysiology, before and again: In the era of the colored revolution in neuroscience through the fluorescent imaging techniques, the extracellular electric recording technique is recapitulating its role thanks to the rapid development of the silicon-based microelectrode arrays (MEA).

~Dr. Jorge Riera

Dr. Jorge Riera is interested in elucidating volumetric aspects of the neuronal coding in the neocortex of rodents, as well as in determining how these aspects are reflected in the slow- components of the extracellular electric potentials at either the small (LFP) or the large (EEG) scale. For that end, multi-laminar extracellular recordings obtained from extended portions of the cortical sheet are desirable. For about three years, Dr. Riera’s group in Tohoku University has been working together with NeuroNexus in customizing a three-dimensional “3D” probe to achieve this goal in particular for the somatosensory barrel cortex.

ResultS

Dr. Takakuni Goto, a postdoc in Dr. Riera’s group, has recently developed a new method to obtain 3D reconstructions of the neuronal current sources for unit/postsynaptic activity, which is robust to both noise and electrode resolution. This methodology is based on previous results about the conductive properties of the barrel cortex of Wistar rats (Goto et al., J Neurophysiol 104(6): 3388-3412, 2010). The group, currently in residence at Florida International University in Miami FL, is now working on determining the spatial codifiers of the whisker’s velocity and direction. Please contact NeuroNexus for more information.

Probe Status

3D arrays are customizable by choosing any set of 2D arrays to fit your experimental needs.

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