%0 Journal Article %A HUGO KRUEGER %A ISADORE LAMPE %A J. G. REID %T THE EFFECTS OF MORPHINE AND ITS DERIVATIVES ON INTESTINAL MOVEMENTS V. CONTRIBUTIONS TO THE ANALYSIS OF INTESTINAL RECORDS %D 1936 %J Journal of Pharmacology and Experimental Therapeutics %P 327-340 %V 56 %N 3 %X Fluoroscopic visualization and X-ray films have shown that the P-waves of kymographic records of intestinal motility are caused by peristalsis. Most of the other waves on such a record are due to localized activity. The increase in tone following moderate doses of morphine usually does not involve all the musculature over a balloon to the same extent. Rhythmic contractions are not identical with segmenting contractions but are the result of activity involving the musculature over nearly the entire length of the balloon. %U https://jpet.aspetjournals.org/content/jpet/56/3/327.full.pdf