Astrocytes Optimize the Synaptic Transmission of Information
Figure 2
Synaptic signal transmission at a presynaptic action potential frequency of 5 Hz is shown as a function of the relative background calcium level.
The calcium is normalized to the value that maximizes synaptic transmission. The vertical line denotes the value of calcium that yields the experimentally measured transmission probability of the tripartite synapse. The inset shows the power spectrum of the postsynaptic current events at the value of calcium that maximized the signal transmission.