Heart rate variability analysis based lie detection method and lie detection device

Abstract

The invention discloses a heart rate variability analysis based lie detection method and lie detection device. The heart rate variability analysis based lie detection method comprises collecting heartbeat signals of a tester in real time during the integral testing process; obtaining a time series of heartbeat (RR) intervals according to the heartbeat signals; dividing the RR interval time series into a plurality of sub-series according to the time interval of a conversion before a test, the mentality purification and a formal test; comparing character information of the sub-series and judging whether the tester lies or not with time domains and frequency domain analysis for calculating the HRV (Heart Rate Variability) of the sub-series serving as the character information. The heart rate variability analysis based lie detection method is reliable, strong in practical operability and high in lie detection accuracy.

Description

technical field [0001] The invention relates to polygraph technology, in particular to a polygraph method and polygraph device based on heart rate variation analysis. Background technique [0002] At present, the most widely used and mature polygraph technology in the judicial field is the multi-channel psychological test technology. Physiological response map, and judge whether the subject is lying or not. In the long-term psychological test research and practical application, commonly used physiological indicators include skin electricity, respiration, heart rate (HR) and blood pressure. In the application of the (CQT) method, the peak height ratio is used as the main evaluation method for the post-test evaluation chart (skin electricity); in the application of the direct guideline method (MGQT), the evaluation is carried out by measuring the positive rate (PFC) of the skin electricity related problems . However, existing studies have shown that even under strict contro...

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Problems solved by technology

The latest research shows that both HR and HRV will change under contextual and cued fear conditioning (contextual and cued fear conditioning), but when retrieving contextual and cued fear memories, compared with HR, the expression of HRV for memory and emotional responses are more sensitive and significant (Liu J, Wei W, Kuang H, Zhao F, Tsien JZ(2013) Changes in Heart Rate Variability Are Associated with Expression of Short-Term and Long-Term Contextual and Cued Fear Memories.PLoS ONE 8(5): e63590.doi: 10.1371 / journal.pone.0063590), therefore, HRV is an important indicator reflecting memory retrieval and emotional stress, but there is no lie detection method that uses HRV analysis as a characteristic parameter

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