Which polygraph, "lie detector" polygraph?

https://www.apa.org/topics/cognitive-neuroscience/polygraph

> Reviews of decades of scientific research suggest that polygraph tests are not reliable or accurate enough to be used in most forensic, legal or employment settings.

> Although lying can cause the physiological responses measured by polygraph machines—such as sweating and increased heart rate—those same changes can occur even when people are not lying, for example when they are nervous.