Heart Rate Variability (HRV) - Polygraph Place Bulletin Board

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Heart Rate Variability (HRV)

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Author	Topic: Heart Rate Variability (HRV)
pal_karcsi Member	posted 11-06-2008 03:42 PM Anybody has any info concerning the use of heart rate variability (HRV ) in detecting deception ?? I only found one article in Japan. Any input is appreciated. Thanks, ------------------ Hól vagytok székelyek, e földet biztam rátok. Elvették töletek,másé lett hazátok. Vesszen Trianon ! IP: Logged
Barry C Member	posted 11-06-2008 04:42 PM It appears in a number of studies along side of other criteria. Read some of the Utah research and you'll find references to heart rate. DACA now teaches slowing of rate as a reaction - if no amplitude increase is seen, and that criteria is based on the research out there. IP: Logged
Taylor Member	posted 11-06-2008 05:41 PM On a side note (I don't know of any research to support this) I have noticed on most of my DI calls the BV rate has increased by the end of the chart...the truthful ones BV rate decreases or flucuates by a point or two. IP: Logged
pal_karcsi Member	posted 11-06-2008 06:13 PM HRV is not just heart rate . Heart rate variability refers to the interbeat interval between two consecutive beats. The IBI ( inter beat interval ) is draw directly from an ECG or a holter device. The polygraph can not display the IBI. Doctors use it as a predictor for sudden death , but has many other aplications e.g. in Biofeedback for decreasing anxiety. ------------------ Hól vagytok székelyek, e földet biztam rátok. Elvették töletek,másé lett hazátok. Vesszen Trianon ! IP: Logged
Barry C Member	posted 11-06-2008 06:26 PM Yes, and that's why you want to look at the Utah research where they record such things. You can get it from pressure tracings that we use. I think Limestone might have been doing something with that, but I'm not sure. As I said, DACA scores slowing of rate (a larger beat-to-beat interval), but Dr. Kircher told me what he's seen really requires a computer to "see." IP: Logged
MFERGUSON Member	posted 11-14-2008 07:04 PM I am actually designing my Thesis around HRV and you are right the Japan study is the only one I have found. Most people don't understand the microsecond changes between beats. I am currently researching different medical instruments to find one that I can compare against my charts. I had asked Limestone if they could do it and they weren't succesful. Feel free to contact me if you have any other questions. IP: Logged
Barry C Member	posted 11-14-2008 07:41 PM Contact Dr. Kircher at the University of Utah. He's measured this stuff before. I've seen some of the data, but at this point, I don't know enough about it to know what to make of it. If your sampling rate is fast enough, you can measure the "distance" between beats with the cuff. You could ask Dr. Kircher if he's correlated that with other measures and see how it compares. IP: Logged
pal_karcsi Member	posted 11-14-2008 07:52 PM MFerguson : I´m also doing some research on HRV for lie detection. You can get the HRV and IBI from almost any new EKG holter device. I´m using a Biofeedback device : J J I-330 which would do it ok. Please write me so we can share ideas. My e.mail is : psicoiuris@hotmail.com Dr. Carlos Pal-Hegedus ------------------ Hól vagytok székelyek, e földet biztam rátok. Elvették töletek,másé lett hazátok. Vesszen Trianon ! IP: Logged
MFERGUSON Member	posted 11-17-2008 03:47 PM Barry, Thank you I will. Jordan ________________________________________ Carlos, I will be talking to you soon. Jordan IP: Logged
Gordon H. Barland Member	posted 11-17-2008 11:48 PM Pal & MFerguson, Dr. Barbara Carlton did some HR variability research at DoDPI about 15 years ago. She was calling it STI (systolic time intervals). Her report should be at DACA. Her research was followed up by Drew Richardson, who was then working on his doctorate. I don't recall anything practical coming from their efforts, but at that time they had to do all their measurements by hand and manually enter them into a spreadsheet, so they couldn't possibly handle the volumes of data available with today's software. You might try contacting Don Krapohl for a copy of the report(s). Gordon IP: Logged
pal_karcsi Member	posted 11-18-2008 08:24 AM Gordon : Thanks for the info , I will contact Don about this. Right now with new software we can extract more info on HRV that 15 years ago. I think HRV could be another polygraph variable to be use in the near future. Best, ------------------ Hól vagytok székelyek, e földet biztam rátok. Elvették töletek,másé lett hazátok. Vesszen Trianon ! IP: Logged
MFERGUSON Member	posted 11-19-2008 07:25 PM Gordon, I did mention this to Don when I first learned that this measurement was available. The research available on HRV is overwhelming. It is considered one of the best measurements of autonomic nervous system arousal and one of the greatest predictors of mortality. I will keep you posted on any developments. Jordan IP: Logged

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