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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: Gastroenterology. 2018 May 24;155(3):760–770.e1. doi: 10.1053/j.gastro.2018.05.036

Figure 2.

Figure 2

UES contractile response to slow (1ml/sec) and ultra-slow (0.05ml/sec) acid infusions in (2a) young and (2b) elderly. The X-axis displays each of the 10-second epoch before, during and after acid infusions. As seen in both young and elderly, the UES contractile response to slow acid infusion was significantly stronger than that of the ultra-slow infusion and the difference became notable starting at the second 10-second Epoch of infusion (p<0.001). UES-CI: UES high-pressure zone contractile integral