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Dynamic control of extracellular environment in in vitro neural recording systems

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5 Author(s)
Pearce, T.M. ; Dept. of Biomed. Eng., Univ. of Wisconsin, Madison, WI, USA ; Williams, J.J. ; Kruzel, S.P. ; Gidden, M.J.
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A technique is presented for rapid fabrication of microfluidic channels on top of multichannel in vitro neural recording electrode arrays. The channels allow dynamic control of both stable and transient flow patterns over localized areas of the array, over biologically relevant timescales. A cellular model consisting of thermally sensitive dorsal root ganglion neurons was integrated into the devices. The device was used to demonstrate precise control of the extracellular microenvironment of individual cells on the array. Since the methods presented here are not specific to a particular cell type or neural recording system, the technique is amenable to a wide range of applications within the neuroscience field.

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Neural Systems and Rehabilitation Engineering, IEEE Transactions on  (Volume:13 ,  Issue: 2 )