Figure 1.
High and low affinity GABAA currents in human sensory neurons. A. In acutely dissociated neurons, a low affinity transient current predominates. GABA was applied at the time indicated. B. After 24hr or more in culture, a high affinity persistent current was detectable. C. Concentration-response data from 10 neurons were normalized with respect to the amplitude of the current evoked with 1 mM GABA. Pooled data were fitted with a Hill equation to yield an EC50 of 540 nM.