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. Author manuscript; available in PMC: 2009 May 11.
Published in final edited form as: Auton Neurosci. 2005 Feb 7;117(2):67–78. doi: 10.1016/j.autneu.2004.10.007

Fig. 7.

Fig. 7

Pertussis toxin (PTX) did not affect fEPSP rundown. (A) PTX pretreatment abolished the IPSP but not the fEPSP in submucosal neurons. Downward deflections in the IPSP traces are voltage responses caused by hyperpolarizing current pulses. A decrease in the amplitude of these responses during the IPSP indicates a decrease in membrane resistance. (B) Successive fEPSPs recorded from myenteric neurons with and without PTX pretreatment. There were no differences between values obtained in treated and untreated tissues at any time point. Data are mean ± SEM (n = 8).