RLE and PLE Tools
The Respiration Line Excursion Tool (RLE) and Pulse Amplitude Tool (PLE) are intended to improve the precision and reliability of feature extraction and numerical scoring. The RLE and PLE tools will evaluate changes in activity at the relevant questions compared with changes in activity at the comparison questions. The relative strength of response is illustrated by a numerical score (RLE Score and PLE Score), and the direction of the score is indicated by the sign value. When the sensor gain/sensitivity level is greater than zero, greater responses will be shown at higher positions on the polygraph and smaller responses are shown a lower position on the chart. This means that positive RLE scores are correlated with truth-telling, while negative scores are correlated with deception. Recommended integer scores (i.e. 3-position or ESS scores) are indicated by user-selectable colors, with the default colors Red and Green indicating recommendations for negative and positive integer scores. Recommended integer scores are subject to a maximum and minimum optimization constraints in order to improve the diagnostic value of the recommended scores and to reduce the likelihood that a recommended score will be based on unstable or artifacted data segments.
To enable the RLE and PLE Tools while viewing a chart, select Tools > Preference > Look/Feel Summary, and enable (check) the PLE and RLE Tools (Thoracic and Abdominal).
*Note: When using the PLE component with the LX4000, the appropriate auxiliary port must be identified as the PLE channel for the PLE tool to recognize the data.
Once the the RLE and PLE tools have been enabled, to ensure that the RLE and PLE tools automatically display each time a chart is viewed, go to Tools > Preferences > Chart Settings. Enable the PLE Tool/RLE Tool must be set to Yes.
