Find out chronaxie and rheobase from the graph given below: (A) Chronaxie 0.2 msec; rheobas 0.3V, (B) Chronaxie 0.3V; rheobase 0.2 msec, (C) Chronaxie 0.3V; rheobase 0.6V, (D) Chronaxie 0.2 msec; rheobase 0.6V
Answer is A. Rheobase is the minimum stimulus strength that will produce a response. It corresponds to 0.3V Chronaxie is the minimum time duration for which a stimulus doubles the rheobase. Double the rheobase is 0.6V which corresponds to 0.2 msec.