The Distribution of Useful Frequencies in Polygraph Sensor Channels
Journal Title: European Polygraph - Year 2017, Vol 42, Issue 4
Abstract
Purpose: to help other polygraph researchers better understand the distribution of energy across diff erent frequencies in the standard six polygraph channels in common use. The channels shown will be pneumo, electrodermal (Axciton), cardio cuff pressure, movement sensor, and infrared plethesmo (Axciton). In all cases we use a zero phase high pass filter with a fourth order roll off . Unless otherwise noted, all frequency traces are kept with a constant gain to show their relative energy or strength content.
Authors and Affiliations
Bruce White
Keywords
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- EP ID EP357770
- DOI 10.1515/ep-2017-0016
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