Date: 2021-02-10 Experiment: WT DREADD awake DG + CA3 Experimenter: Mariela Objective: in awake 4x16 probe in DG 32 linear 25 um probe in CA3 at 20 deg angle SURGERIES Mouse : 4497 - 2 dots , DOB 16-12-2020 , 22.8 g injection: LV-160 / pLenti225.CamKII.hM4D(Gi)-mCherry Solutions: ACSF 2018 10:40 iso induction + bupre 11:05 Injection site = (0,0,0) ==> DG marks (-0.75;0.5), (0.25;-0.5), CA3 marks at (1.25;-0.25), (0.25,1.25) ==> center (0.92;0.63). 12:20 craniotomy DG = oedema from the injection scar, CA3 ok 12:25 Recovery RECORDINGS Mouse : 4497 - 2 dots , DOB 16-12-2020 , 22.8 g injection: LV-160 / pLenti225.CamKII.hM4D(Gi)-mCherry 14:00 Removed the silicon, OK 14:35 zero S404 in the middle of the DG craniotomy zero CCO5 in the middle of the CA3 craniotomy take impedances S404 (0;0,-2.25) 15:15 CA1 1370-1500 CA1 all shanks SWR go up above the layer, and down below CA1. DS go down above the layer and up in the 2/3rd of the layer itself CHANGED approached about DG: as previous experiments were too lareral and too deep we stop as soon as we hear spike, because they are most likely from CA3 All deepst channel to be up and all the shallow to be down Heard spikes 2150 - shank 3 and 4 Saw dentate spike reversal : yes 16:10 CCO5 (0;0;-2.78) 1570-1950 CA1 2600-2785 CA3 we stopped at -2.78 17:22 Recording 1 17:55 Inject 200uL saline, then recording 2 18:25 Recording 3 19:10 remove probes 19:20 Iso - sac CC05 had noise during several moments of the recordings (hair touchong the probe?) Notes for histology: 4406 CA3: 20 deg, DiI (1*1 marks total) DG: 0 deg, DiI x (1*4 marks total) TdTomato