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Table 1 Experimental groups and sample sizes. From the initial number of mice that entered the experiment (total injected), some died owing to intrahippocampal kainate injections, anesthesia, or implantations. *Some mice were excluded from the LFP analysis due to electrode/optic fiber positions not in CA1 (n = 4), due to lack of signal from the electrode (n = 1), or due to unusual hippocampal atrophy (n = 2). **Two mice were excluded from histological analysis because of widespread PACK-mCherry expression not only in CA1 but also in DG. ***Three mice were further excluded from the analysis of GFAP intensity because of incomparable labeling intensity. The final sample sizes for LFP analysis and histological analysis are presented in the last two columns

From: Long-term in vivo application of a potassium channel-based optogenetic silencer in the healthy and epileptic mouse hippocampus

Group Total injected Died due to surgery Excluded*/** LFP analysis Histological analysis
Saline + PACK 11 2 4*, 2** 6 8/5***
Saline + bPAC 8 1 1*,1** 6 6
Saline + mCherry 4 1 1* 3 4
Saline + no virus 9 2 0 7
Kainate + PACK 11 4 2* 5
Kainate + bPAC 9 6 0 3
Kainate + no virus 10 5 0 5