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Radiological Investigation of Stomach Changes following a Loud Auditory Stimulus

Department of Anatomy, University College, London, W.C.1

This excerpt was created in the absence of an abstract.

1. In a radiological investigation of the reaction of stomachs to the noise of an unexpected gunshot, an attempt was made to relate the reactions to some features of stomachs observed under normal conditions before the stimulus was given.

2. Fifty-five subjects were examined and changes in peristaltic rate and amplitude were observed in over 50 percent. of the cases. In only one case was a gross change in the outline of the stomach observed.

3. In most cases in which the rate of peristalsis was changed following the stimulus, this change consisted apparently in the suppression of the next wave or waves of contraction. This delay appears to be a small multiple (2 or 3 times) the mean peristaltic interval.

4. No relationship could be established between reactions to the stimulus and any other feature of the stomach that was measured. Nor was any correlation established between the experience of fear reported by the subject, or other bodily reactions such as sweating and pounding of the heart and a stomach reaction.

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