Figure 3
From: Sympathetic modulation of hindlimb muscle contractility is altered in aged rats
Effect of LST stimulation on the tonus of the triceps surae muscles. (A) Example responses in one young and one aged rat of the response of muscle tonus induced by LST stimulation at 5 Hz. Among a 190 s period of LST stimulation, a 129 s period including tibial nerve stimulation was omitted. (B) Graph summarizing (n = 11 rats for each group) the changes in muscle tonus. X axis: frequency of LST stimulation. Y axis: changes in muscle tonus during LST stimulation, expressed as a delta value relative to the control level (or tonus) just before LST stimulation. *P < 0.05, **P < 0.01 (Wilcoxon signed-rank sum test, compared with the pre-stimulus control).
