<prompt> All are true regarding basal electrical rhythm of intestine except?Tone of contraction is related to amplitude of stimulusTone of contraction is related to frequency of stimulusFrequency of contraction is 6minThreshold of contraction is -50 mV  <response>: Ans. a Tone of contraction is related to amplitude of stimulusRef: Ganong, 25th edp.497Tone of contraction is proportional to the number and frequency of actional potentials and not the amplitude 