Fig 4. Quantitative analysis of proprioceptive afferents supplying the mouse soleus muscle.
(A) The number of proprioceptive afferents supplying a given MS ranged from 1 to 5 (n = 135 neonatal and mature MS supplied by 295 proprioceptive afferents in total). Most often, MS were supplied by 2 proprioceptive afferents. (B) Total proprioceptive afferent population per muscle was weakly correlated with total number of receptors (Spearman correlation rs(7) = 0.498). (C) Total number of MS per muscle displayed a modest negative correlation with the number of average afferents per MS (Spearman correlation rs(7) = -0.536).