Fig. 7. Muscle force is enhanced by augmentation. (A) Original recording of gm6 muscle force during intermediate in vivo rhythm stimulation. Top trace: stimulus. Bottom trace: force. The first, tenth and eleventh stimulus trains are shown. Tenth and eleventh stimulus trains were separated by a pause of 100 s. Dotted lines indicate peak force. (B) Comparison of maximum force during first and tenth stimulus train. (C) Comparison of maximum slope of force production during first and tenth stimulus train.