TASER® devices

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Dr. Jauchem has served as expert witness in Texas and Louisiana for plaintiffs in cases involving use-of-force incidents in which conducted electrical weapons were used. Along with conducted electrical weapons, Dr. Jauchem has studied specific areas relevant to forensic pathophysiology, including excited delirium, hyperthermia, and proteomics.

Measurements of physiological factors prior to final pathological findings can help to develop hypotheses relating to weapons effects. One of the strengths of using laboratory models is the ability to control confounding factors. Dr. Jauchem selected the model he used for blood-factor studies for several reasons, including similarities to humans in terms of chemical and physical characteristics of blood, respiratory parameters, and responses to muscular exercise.


1. Sherry CJ, Brown GC, Beason CW, Jauchem JR, Dayton TE, Ross JA, Johnson LR, Kuhnel CT, Fines DA, Theis CF. An evaluation of the electrical properties and bio-behavioral effects of four commercially available TASER®s and the Jaycor Sticky Shocker. U.S. Air Force Research Laboratory Technical Report AFRL-HE-BR-TR-2003-0089, June 2003.
Available at URL: http://stinet.dtic.mil/cgi-bin/GetTRDoc?AD=ADA416553&Location=U2&doc=GetTRDoc.pdf.

2. Sherry CJ, Beason CW, Brown GC, Simonds JL, Ross JA, Cook MC, Fines DA, Jauchem JR, Merritt JH. Variable TASER® parameters: Effectiveness (muscle contraction) and cardiac safety (ventricular fibrillation). U.S. Air Force Research Laboratory Technical Report AFRL-HE-BR-TR-2004-0094, July 2004.

3. Jauchem JR. Effectiveness and health effects of electro-muscular incapacitating devices. University of New Hampshire Non-Lethal Technology Innovation Center’s Sixth Annual Non-Lethal Technology and Academic Research Symposium, Winston-Salem, North Carolina, 16 November 2004.

4. Jauchem JR. Electro-Muscular Incapacitation: Scientists perform research to evaluate effectiveness of electro-muscular incapacitating devices. Air Force Research Laboratory Technology Horizons, 2005.

5. Beason CW, Clark CD, Cook MC, Ashmore J, Fines DA, Ross JA, Sherry CJ, Parker JE, Jauchem JR. Electromuscular incapacitation (EMI) devices: An assessment of effectiveness and risk of injury. U.S. Air Force Research Laboratory Technical Report AFRL-HE-BR-TR-2004-0190, January 2005.

6. Jauchem JR, Sherry CJ, Fines DA, Cook MC. Acidosis, lactate, electrolytes, muscle enzymes, and other factors in the blood of Sus scrofa following repeated TASER® exposures. Forensic Science International 161: 20-30, 2006.

7. Jauchem JR, Cook MC, Beason CW. Blood factors of Sus scrofa following a series of three TASER® exposures. Forensic Science International 175: 166-170, 2008.

8. Beason CW, Jauchem JR, Clark CD III, Parker JE, Fines DA. Pulse variations of a conducted energy weapon (similar to the TASER® X26 device): Effects on muscle contraction and threshold for ventricular fibrillation. Journal of Forensic Sciences [Pathology and Biology section] 54: 1113-1118, 2009.

9. Jauchem JR, Beason CW, Cook MC. Acute effects of an alternative electronic-control-device waveform in swine. Forensic Science, Medicine, and Pathology 5: 2-10, 2009.

10. Jauchem JR, Seaman RL, Klages CM. Physiological effects of the TASER® C2 electronic control device. Forensic Science, Medicine, and Pathology 5: 189-198, 2009.

11. Jauchem JR. Deaths in custody: Are some due to electronic control devices (including TASER® devices) or excited delirium? Journal of Forensic and Legal Medicine 17: 1-7, 2010.

12. Jauchem JR. An animal model to investigate effectiveness and safety of conducted energy weapons (including TASER® devices). Journal of Forensic Sciences [Pathology and Biology section] 55: 521-526, 2010.

13. Jauchem JR. Repeated or long-duration TASER® electronic control device exposures: Acidemia and lack of respiration. Forensic Science, Medicine, and Pathology 6: 46-53, 2010.

14. Jauchem JR. Muscle stimulation by TASER® conducted energy weapons: Similarities with voluntary muscle contractions during exercise. Advances in Medicine and Biology 7: 169-179, 2010.

15. Jauchem JR. Increased hematocrit after applications of conducted energy weapons (including TASER® devices) to Sus scrofa. Journal of Forensic Sciences [Pathology and Biology section] 56(Suppl 1): S-229-S233, 2011.

16. Jauchem JR. Pathophysiologic changes due to TASER® devices versus excited delirium: Potential relevance to deaths in custody? Journal of Forensic and Legal Medicine 18: 145-153, 2011.

17. Comeaux JA, Jauchem JR, Cox DD, Crane CC, D’Andrea JA. Muscle contraction during electromuscular incapacitation: A comparison between square pulse waves and the TASER® X26 device. Journal of Forensic Sciences [Pathology and Biology section] 56(Suppl 1): S95-S100, 2011.

18. Jauchem JR, Seaman RL, Fines DA. Survival of anesthetized Sus scrofa after cycling (7 s on / 3 s off) exposures to an electronic control device for 3 min. American Journal of Forensic Medicine and Pathology 32: 124-130, 2011.

19. Comeaux JA, Jauchem JR, Cox DD, Crane CC, D’Andrea JA. 40-Hz square-wave stimulation requires less energy to produce muscle contraction: Compared with the TASER® X26 conducted energy weapon. Journal of Forensic Sciences [Pathology and Biology section] 58: 1026-1031, 2013.

20. Jauchem JR, Bernhard JA, Cerna CZ, Lim TY, Seaman RL, Tarango M. Effects of a TASER® conducted energy weapon on the circulating red-blood-cell population and other factors in Sus scrofa. Forensic Science, Medicine, and Pathology 9: 308-320, 2013.

21. Jauchem JR. Blood lactate concentration after exposures to conducted energy weapons (including TASER® devices): Is it clinically relevant? Forensic Science, Medicine, and Pathology 9: 386-394, 2013.

22. Jauchem JR. Exposures to conducted electrical weapons (including TASER® devices): How many and for how long are acceptable? Journal of Forensic Sciences 60(Suppl 1): S116-S129, 2015.

23. Jauchem JR, Cerna CZ, Lim TY, Seaman RL. Exposures of Sus scrofa to a TASER® conducted electrical weapon: No effects on 2-dimensional gel electrophoresis patterns of plasma proteins. Forensic Science, Medicine, and Pathology 10: 526-534, 2014.

24. Jauchem JR. TASER® conducted electrical weapons: Misconceptions in the scientific/medical and other literature. Forensic Science, Medicine, and Pathology 11:53-64, 2015.



“Less-Than-Lethal TASER® Technology.” U.S. Department of Justice Policy Assessment Liability Panel (Washington, DC, 20 June 2000).

“Electro-Muscular Incapacitation Devices, Human Effects Research.” Naval Research Laboratory (San Antonio, TX, 23 Apr. 2003).

“Data Assessment Regarding Injury and Effectiveness of Electro-Muscular Disruptor Devices.” U.S. Marine Corps Joint Non-Lethal Weapons Directorate (Brooks City-Base, TX, 23 Jan. 2004).

“TASER®-like Devices for Non-Lethal Applications.” Defense Advanced Research Projects Agency Advisory Panel (Arlington, VA, 6 May 2004).

“Quarterly Director’s Review.” U.S. Marine Corps Joint Non-Lethal Weapons Directorate (Quantico, VA, 22 July 2004).

“Review of Directed Energy Technology.” KARTA Technologies (San Antonio, TX, 30 July 2004).

“Directed Energy and Non-Lethal Research at the Radio-Frequency Radiation Division” U.S. Air Force Safety Center (Albuquerque, NM, 23 Sept. 2004).

“Parametric assessment of waveform characteristics and electrode placement/separation.” Joint Non-Lethal Weapons Directorate Health Effects Advisory Panel (Arlington, VA, 15 Dec. 2004).

“Future Capabilities of Electro-Muscular Disruptor Devices.” Briefing to Chief Scientist, Materials Directorate, Air Force Research Laboratory (Brooks City-Base, TX, 2 Feb. 2005).

“Studies of Muscle Contraction and Blood Factors in Animals Exposed to Electromuscular Incapacitating Devices.” Bioelectromagnetics Society Winter Workshop: Exploring the Boundaries of Electromagnetic Field Intervention Techniques (Tempe, AZ, 3 Feb. 2006).

“Effects of Electronic Control Devices.” European Office of Aerospace Research & Development, U.S. Air Force (Brooks City-Base, TX, 21 Feb. 2006).

“Electronic Control Devices.” Director, Advanced Concepts Group, Sandia National Laboratories (Albuquerque, NM, 20 Mar. 2006).

“Electromuscular Incapacitation: Historical Perspective.” Human Electromuscular Incapacitation Conference (Quantico, VA, 18 Apr. 2006).

“The Use of Acoustics or Electromuscular Disruption Devices as Non-Lethal Weapons.” Institute for National Security Studies, U.S. Air Force Academy (Colorado Springs, CO, 4 May 2006).

“Recent Studies of Electromuscular Incapacitation.” Principal Investigators’ Meeting, University of Chicago (Chicago, IL, 24 Oct. 2006).

“Parametric Studies of Electromuscular Incapacitation Waveforms.” Principal Investigators’ Meeting, Man-Tech Corporation (San Antonio, TX, 21 Aug. 2007).

“Update of Human Electro-Muscular Disruption Program.” Human Effects Advisory Panel, Joint Non-Lethal Weapons Directorate (Arlington, VA, 11 Dec. 2007).

“Electronic Control Devices.” Air Force Research Directorate Information Exchange (San Antonio, TX, 24 Jan. 2008).

“Electro-Muscular Incapacitation Devices.” Directed Energy Bio-Effects Internal Scientific Advisory Board Review (San Antonio, TX, 1 July 2008).

“Electro-Muscular Incapacitation.” UK/US Novel Effects Behavioral Workshop for Special Projects, United Kingdom Ministry of Defence (London, United Kingdom, 3 Sept. 2008).

“Electronic Control Devices.” Security Forces Squadron, 48th Fighter Wing, U.S. Air Forces in Europe (Royal Air Force Lakenheath, United Kingdom, 4 Sept. 2008).

“Physiological Responses of Repeated Exposures to TASER® Devices.” Meeting of the Medical Panel, Committee for the Study of Deaths Following Electro-Muscular Disruption, National Institute of Justice (Baltimore, MD, 13 Nov. 2008).

“Electro-Muscular Incapacitation Effects.” U.S. Marine Corps (Fort Sam Houston, TX, 5 Aug. 2013).

(Site of presentation or location of organization in parentheses)