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. 2004 Jun 2;24(22):5230–5238. doi: 10.1523/JNEUROSCI.5649-03.2004

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Copyright © 2004 Society for Neuroscience 0270-6474/04/245230-09.00/0

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Figure 3. — B50-elicited motor programs are blocked by PIR. Single-cycle programs were triggered once every minute by stimulating B50 at 10 Hz, in normal saline (ASW), in 1 × 10^–3 m pirenzepine (PIR), and after normal saline wash (WASH). The protraction phase (marked by white bar below traces) was monitored by firing of neurons B31/B32 and B63 and activity in the I2 nerve (I2N). The retraction phase (marked by black bar below traces) was monitored by activity in the buccal nerve 2 (BN2) and hyper polarization in B63 and B31/B32. The dashed line marks the level of peak depolarization in B31/B32 under control conditions to facilitate comparison.