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. 2014 Sep 30;235:83–91. doi: 10.1016/j.jneumeth.2014.06.031

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Fig. 4 — Combined optogenetics, reverse microdialysis and silicone probe recordings. (A) Schematic drawing (AP = −3.14 from bregma, Paxinos and Watson, 2007) showing the position in the VB of the optrode (with the four shanks of the silicone probe in orange and the attached optic fiber in gray) and the microdialysis probes (black) with their active membranes shown in red. (B) Coronal brain section indicating the tracks of the microdialysis probe (DP) and the optrode (SP + OF). (C) Wavelet transform (top) and ipsilateral EEG (bottom) during laser light stimulation in the VB, consisting of 5 trains of 5 (5 ms) pulses at 10 Hz (laser intensity: 40 mW) during reverse microdialysis of aCSF (C1) and TTA-P2 (C2) in an anesthetized rat. Blue lines mark the time of the laser light stimulation. (D) Spindle activity on raw (top) and band-passed signal (low trace) before (D1) and after (D2) TTA-P2 microdialysis. Calibrations in D1 also apply to D2. (E) Raster plots (and superimposed respective EEG traces) showing the activity of 4 VB TC neurons in response to the light pulses during aCSF (E1) and TTA-P2 (E2) microdialysis. Light pulse-triggered spike rates (E3) from 15 stimulation epochs.