What is the time gap given in train of 4: (A) 10 Sec, (B) 20 Sec, (C) 40 Sec, (D) None
Answer is D. In Train of four, four successive stimuli of 0.2sec are applied over 2sec,between two stimuli, the gap is 0.5sec as 4stimuli are applied at a constant interval in 2sec.