Fig. 5 Spatial resolution of the optogenetic activation achieved with OLED microarrays. Spatial resolution of the optogenetic activation achieved with.

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Fig. 5 Spatial resolution of the optogenetic activation achieved with OLED microarrays. Spatial resolution of the optogenetic activation achieved with OLED microarrays. A HEK-293S+A cell attached to an OLED microarray is stimulated with different patterns of blue light from the array for 30 s (blue-shaded area) and subsequently deactivated with green light after switching off the OLED array (green-shaded area). The current (I) across the cell membrane is monitored using the whole-cell patch clamp recording technique during different stimulation patterns, as indicated by the schematic representations on the left. First row, full array switched on; second row, three pixels switched on underneath the cell; third row, three pixels switched on directly next to the cell but not underneath; and fourth row, three pixels switched on next to cell and underneath the patch pipette. The mean current change (ΔI) during light stimulation is indicated in red for each recording. Anja Steude et al. Sci Adv 2016;2:e1600061 Copyright © 2016, The Authors