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. 2023 Apr 17;325(1):R13–R20. doi: 10.1152/ajpregu.00327.2022

Figure 1.

Figure 1.

Response of group III and IV muscle afferents to sinusoidal mechanical stimuli at different frequencies in rats. Each spot in the illustration represents the receptive field of a group III and IV muscle afferent. A: shading illustrates the tendinous area. B: representative raw recording of individual group IV fiber activity in response to a 137-mN sinusoidal mechanical stimulus at different frequencies (0.01, 0.05, 0.10, 0.20, and 0.25 Hz). C: average number of spikes evoked by a 137-mN sinusoidal mechanical stimulus at different frequencies in group III (○, n = 1) and IV (●, n = 11) fibers. D: average number of spikes per second to a 137-mN sinusoidal mechanical stimulus at different frequencies in group III (○, n = 1) and IV (●, n = 11) fibers. *P < 0.05; **P < 0.01. All data analyzed by one-way repeated-measures ANOVA followed by post hoc Fisher’s least significant difference (LSD).