Rectal electrostimulation of erection in macaca fascicularis primates

摘要

AbstractNoninvasive transrectal electronic stimulation using a Biosonics MEGS (registered trademark and devices by Biosonics, Inc.; patent pending) unit was employed to produce erection in five Macaca fascicularis primates. Using an electrode‐bearing glove (Biosonics, patent pending) a modulated pulse stimulus of 12 and 15 V was applied to five intra‐rectal loci overlying the prostate. The locus that produced the most positive response was then stimulated at six intensities between 7.5 and 15 V. Erectile response was quantitated with a new device that measures penile rigidity (Biosonics, patent pending). Of the five loci tested (midline central, midline base, midline apex, right and left border), the right border of the prostate produced the most consistent and strongest erectile response. Increasing the stimulus intensity between 7.5 and 15 V demonstrated that a minimum voltage of 10.5 V was necessary for erection. There was a rapid progressive increase in rigidity, which became maximum at 15 V. These results demonstrate that the use of the Biosonics MEGS device and rigidometer provides a reliable method of producing and quantitating erection in prima