<p><b>(A)</b> Raw trace of muscle spindle afferent response to ramp and hold stretch. Times where baseline (BL), initial static time (IST), and final static time (FST) firing frequencies measured are shown on the trace. <b>(B)</b> Instantaneous frequency (inst fr; Hz) response to ramp and hold stretch of identified unit during stretch. Time BL, dynamic peak (DP), IST, and FST measured identified on graph. <b>(C)</b> Length change during stretch. <b>(D)</b> Muscle tension during stretch. Time where baseline tension (BL), maximum tension (peak), and end of ramp tension (plateau) were measured indicated on trace. <b>(E)</b> Raw trace of neural response (top) to sinusoidal vibration (length change bottom). The larger unit exhibits 1:1 entrainment as denoted by small black arrows. The smaller unit’s firing rate is unaffected by vibration as denoted by large dashed arrows.</p
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