Synaptic Variability Introduces State-Dependent Modulation of Excitatory Spinal Cord Synapses

Figure 7

(a) There was a significant difference in the available vesicle pool at connections where metaplasticity or release probability-dependent plasticity occurred. (b) Graph showing the relationship between the number of vesicles and the PP ratio. The data is fit with a single exponential association and suggests that the influence of vesicle numbers on the PP ratio plateaued at approximately 1.0.

(a)

(b)