Spontaneous displacement of air after encephalography.
In some cases it has been observed that after encephalography air seems to be displaced from one part of the ventricular system to another without movements of the head. This apparently occurs in spite of the law of upward displacement of gases in fluids.
D000392:Air Movements; D002552:Cerebral Ventricles; D006801:Humans; D011011:Pneumoencephalography