Table 1.

Reported range of E_GABA in 20 published studies

Study	E_GABA (mV)	N	Technique	Citation	Notes
1	−89.0	6	Gramicidin	Nakahata et al., 2010
2	−87.0	6	Gramicidin	Ormond and Woodin, 2009
3	−82.7	17	Gramicidin	Ilie et al., 2012
4	−81.2	6	Gramicidin	Galanopoulou, 2008	Female mice
5	−81.0	4	Cell attached	Chorin et al., 2011
6	−79.0	12	Gramicidin	Pavolv et al., 2011
7	−78.0	5	Gramicidin	Zhan et al., 2006
8	−77.0	8	Gramicidin	Lagostena et al., 2010
9	−75.8	6	Gramicidin	Tanaka et al., 1997	Evoked in SLM
10	−74.2	8	Gramicidin	Galanopoulou, 2008	Male mice
11	−74.0	18	Gramicidin	Tyzio et al., 2007
12	−72.6	6	Gramicidin	Tanaka et al., 1997	Evoked in SP
13	−72.0	5	Cell attached	Tyzio et al., 2008
14	−69.0	6	Gramicidin	Riekki et al., 2008
15	−68.9	7	Gramicidin	Barmashenko et al., 2011
16	−68.7	18	Gramicidin	Raimondo et al., 2012
17	−68.0	9	Gramicidin	MacKenzie and Maguire, 2015
18	−67.8	10	Gramicidin	Sauer et al., 2012
19	−66.3	12	Gramicidin	Balena et al., 2010
20	−56.6	6	Gramicidin	Yang et al., 2015

Twenty group means of E_GABA measurements using gramicidin and cell-attached techniques in age-matched CA1 pyramidal cells. SP, Stratum pyramidale; SLM, stratum lacunosum-moleculare. The group mean values of E_GABA in 20 separate studies shown indicate a distribution >25 mV. The number of recorded cells (N) in each study varies between 4 and 18. There is no significant correlation between the number of recorded cells and the reported E_GABA values (Pearson's r = −0.13, p = 0.5) or the variation in E_GABA values indicated by the SEM (Pearson's r = −0.38, p = 0.1).