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Polygraph Glossary Physiology

Psychogalvanic Reflex

Definition
The Psychogalvanic Reflex (PGR) is an obsolete term coined by Veraguth (1906) for what is now called the electrodermal response.

What Is the Psychogalvanic Reflex?

The Psychogalvanic Reflex (PGR) is an obsolete term coined by Veraguth (1906) for what is now called the electrodermal response.

Cross-references

More physiology terms in this glossary
tachypnea Tachypnea is rapid, usually shallow breathing. In polygraph testing, tachypnea may indicate anxiety, a medical condit... incisura An incisura is a notch or indentation in a waveform. See: Dicrotic Notch. Traube-Hering-Mayer wave The Traube-Hering-Mayer (THM) wave is a rhythmic low-frequency fluctuation (~0.1 Hz) in heart rate linked to blood pr... Attention The focusing or concentration of mental activity on a stimulus. Central to the theory of salience in polygraph testin... diastole Diastole is the phase of the heartbeat cycle when the heart muscles relax and the chambers fill with blood. In the po... thoraco-lumbar division The thoracolumbar division is an anatomical classification of the sympathetic branch of the Autonomic Nervous System,...

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