Hi,
When I read papers and found that authors used Cscl and Csmeth-based internal solution to record IPSC at the same experiment. I calculated the Cl- Veq from Cscl -based solution -0.48mV, The holding potential is -70mv to get inward IPSC. However, Cl- Veq from Csmethl -based solution is -87mV, the hoding potential is 0mv to record outward IPSC. So I did not understand why they recorded the IPSC with two different internal solution to record inward/outward currents?