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A New Individually Addressable Micro-LED Array for Photogenetic Neural Stimulation

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7 Author(s)
McGovern, B. ; Inst. of Biomed. Eng., Imperial Coll., London, UK ; Berlinguer Palmini, R. ; Grossman, N. ; Drakakis, E.
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Here, we demonstrate the use of a micro light emitting diode (LED) array as a powerful tool for complex spatiotemporal control of photosensitized neurons. The array can generate arbitrary, 2-D, excitation patterns with millisecond and micrometer resolution. In particular, we describe an active matrix control address system to allow simultaneous control of 256 individual micro LEDs. We present the system optically integrated into a microscope environment and patch clamp electrophysiology. The results show that the emitters have sufficient radiance at the required wavelength to stimulate neurons expressing channelrhodopsin-2 (ChR2).

Published in:

Biomedical Circuits and Systems, IEEE Transactions on  (Volume:4 ,  Issue: 6 )

Date of Publication:

Dec. 2010

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