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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Cell Calcium. 2021 Sep 10;99:102472. doi: 10.1016/j.ceca.2021.102472

Fig. 1. Electrical and mechanical activities of gastric corpus and antrum.

Fig. 1.

A&B show simultaneous intracellular electrical and isometric force recordings from the gastric corpus. C&D show similar recordings of electrical and mechanical activity from the gastric antrum. The gastric corpus is more depolarized and slow waves are at a greater frequency than antrum. Corpus slow waves are also smaller in amplitude and do not produce as forceful contraction as antrum. E shows gastric corpus slow waves at a faster sweep speed. Corpus slow waves consisted of an initial slow depolarization with spontaneous transient depolarizations (STDs; *) followed by a sinusoidal wave that also had superimposed STDs. F shows gastric antrum slow waves at a faster sweep speed. Antrum slow waves consisted of an upstroke depolarization, partial repolarization, and a plateau phase that was sustained for several seconds before repolarization to a diastolic RMP. An inflection (arrows and inset) often separated the upstroke phase into two discrete components. G–J Summarized bar graphs illustrating the differences in RMP and electrical slow wave parameters between corpus and antrum. **** P < 0.0001. All data graphed as mean ± SEM. n = 11.