What does penile strain gauge measure?
A penile plethysmograph is a device used to measure blood flow to the penis. Comparing the flaccid and erect measurements of the gauge can indicate changes in blood flow. As the name implies, a mercury-in-rubber strain gauge is a rubber ring filled with mercury.
What is a PPG assessment?
Photoplethysmography (PPG) is an examination comparable to the ankle-brachial index except that it uses a very tiny blood pressure cuff around the toe and a PPG sensor (infrared light to evaluate blood flow near the surface of the skin) to record waveforms and blood pressure measurements.
Is the penile plethysmograph accurate?
In terms of specificity of these tests for pedophilia, research has estimated the specificity as 92%, 82%, 76%, and 92% in samples of community males and 80% and 92% in sexual offenders against adults. A single study has examined the accuracy of a circumferential phallometric test for hebephilia.
How do you measure arousal?
Measures of arousal may be classified in terms of this psychological spectrum. At the shortest intervals are measures that include indices of cortical activity such as the EEG, both event related and resting frequency. At somewhat longer intervals are the autonomic measures of Skin Conductance (SC) and Heart Rate (HR).
What is a plethysmograph test?
Body plethysmography is a pulmonary (lung-related) function test that determines how much air is in your lungs after you take in a deep breath. It also measures the amount of air left in your lungs after you exhale as much as you can.
What is a Phallometric test?
Phallometric testing-which measures changes in penile circumference or volume, while stimuli depicting different ages and sexual activities are presented-is widely used in clinical and research settings to detect such interests.
Why is it important to have a penile plethysmograph?
A penile plethysmograph is a device used to measure blood flow to the penis. Because good blood flow to the penis is important for erections, penile plethysmography can be especially helpful for doctors evaluating a man’s erectile function.
What does plethysmograph stand for in medical terms?
The penile plethysmograph (pluh-THIZ-muh-graf) (PPG) is a machine for measuring changes in the circumference of the penis. A stretchable band with mercury in it is fitted around the subject’s penis.
Which is the most common method of plethysmography?
The most commonly reported methods of conducting penile plethysmography involve the measurement of the circumference of the penis with a mercury-in-rubber or electromechanical strain gauge, or the volume of the penis with an airtight cylinder and inflatable cuff at the base of the penis.
How is plethysmography used for sex offender treatment?
American sex offender treatment programs utilize this test widely, and U.S. courts mandate plethysmography frequently as a term of supervised release. Penile plethysmography, polygraph, and Abel tests are utilized to monitor whether a supervised-release sex offender is at increased risk of reoffending.