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. 2013 Apr 24;33(17):7130–7144. doi: 10.1523/JNEUROSCI.3576-12.2013

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Copyright © 2013 the authors 0270-6474/13/337130-15$15.00/0

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Figure 1. — Unitary GPe–STN synaptic transmission is subject to profound short-term depression at in vivo rates of activity. A, Example of a unitary GPe–STN synaptic connection stimulated at 33 Hz for 10 s. Gray bar (top) represents the duration of stimulation. Dark gray represents the first and 10th seconds of stimulation, shown on an expanded time scale below. The amplitude and reliability of transmission during the first seconds of stimulation were considerably greater than during the 10th second of stimulation. B, C, Population data arising from 29 unitary connections. B, Plots of normalized mean conductance, including transmission failures (black markers), excluding transmission failures (blue markers), and mean reliability (red markers) per second of stimulation at 33 Hz. C, Normalized mean conductance excluding failures (blue markers) and reliability of transmission (red markers) are shown plotted against normalized mean conductance including failures. Points derived from first, fifth and 10th seconds of stimulation are denoted.