Characteristics of Tetanic Force Produced by the Sternomastoid Muscle of the Rat
Figure 5
Illustration of muscle force measurement as a function of stimulation frequency in a representative rat. Individual muscle contractions to stimulation pulses at different frequencies are shown in red. Single stimulation pulses are indicated by green vertical lines. The muscle responded with single twitches until 25 Hz. At 50 Hz the muscle contractions were fused. With an increasing frequency of stimulation, the muscle responded with increased force, which reached a plateau at about 150 Hz.
