Electrical excitation of skeletal muscle for the estimation of time since death in the early postmortem period

Mohd Noor Suhani, Shahrom Abd Wahid, H. Zarida

Research output: Contribution to journalArticle

Abstract

Electrical excitability of the Orbicularis oculi muscle was assessed on 34 cadavers, according to the subjective grading of muscular response developed by Kline and Kline. In the first group of 28 cadavers, electrical excitation was done to investigate its relationship with the time since death. Direct electrical excitation was through the use of needle electrodes to provide 50 V direct current impulses of 10ms duration at 50 cycles/sec. From electrical excitation of the first group of 28 cadavers, it was found that there was significant negative correlation between the degrees of muscular response and the postmortem interval, and that there was a linear relationship between the two variables. Visible electrical excitation could be elicited up to the 8th hour after death for which the range of estimates of the postmortem interval for each degree of response have been calculated. For the second group of cadavers, it was found that electrical excitation was able to predict the actual postmortem interval for 5 out 6 cadavers within one standard error of the predicted value. The limitations and advantages of this method are discussed It is concluded that electrical excitation of the orbicularis oculi muscle can be of practical use for estimating the time since death for appropriate cases in the early postmortem period.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Forensic Medicine and Toxicology
Volume23
Issue number2
Publication statusPublished - Jul 2006

Fingerprint

Cadaver
Muscle
Skeletal Muscle
death
Needles
Group
grading
Electrodes
Muscles
time

Keywords

  • Electrical excitation/stimulation
  • Orbicularis oculi
  • Postmortem period
  • Rigor mortis
  • Time since death

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Toxicology

Cite this

Electrical excitation of skeletal muscle for the estimation of time since death in the early postmortem period. / Suhani, Mohd Noor; Abd Wahid, Shahrom; Zarida, H.

In: Journal of Forensic Medicine and Toxicology, Vol. 23, No. 2, 07.2006, p. 1-6.

Research output: Contribution to journalArticle

@article{a491be6d0ded45678ef43fd7f9008c71,
title = "Electrical excitation of skeletal muscle for the estimation of time since death in the early postmortem period",
abstract = "Electrical excitability of the Orbicularis oculi muscle was assessed on 34 cadavers, according to the subjective grading of muscular response developed by Kline and Kline. In the first group of 28 cadavers, electrical excitation was done to investigate its relationship with the time since death. Direct electrical excitation was through the use of needle electrodes to provide 50 V direct current impulses of 10ms duration at 50 cycles/sec. From electrical excitation of the first group of 28 cadavers, it was found that there was significant negative correlation between the degrees of muscular response and the postmortem interval, and that there was a linear relationship between the two variables. Visible electrical excitation could be elicited up to the 8th hour after death for which the range of estimates of the postmortem interval for each degree of response have been calculated. For the second group of cadavers, it was found that electrical excitation was able to predict the actual postmortem interval for 5 out 6 cadavers within one standard error of the predicted value. The limitations and advantages of this method are discussed It is concluded that electrical excitation of the orbicularis oculi muscle can be of practical use for estimating the time since death for appropriate cases in the early postmortem period.",
keywords = "Electrical excitation/stimulation, Orbicularis oculi, Postmortem period, Rigor mortis, Time since death",
author = "Suhani, {Mohd Noor} and {Abd Wahid}, Shahrom and H. Zarida",
year = "2006",
month = "7",
language = "English",
volume = "23",
pages = "1--6",
journal = "Indian Journal of Forensic Medicine and Toxicology",
issn = "0973-9122",
publisher = "Indian Journal of Forensic Medicine and Toxicology",
number = "2",

}

TY - JOUR

T1 - Electrical excitation of skeletal muscle for the estimation of time since death in the early postmortem period

AU - Suhani, Mohd Noor

AU - Abd Wahid, Shahrom

AU - Zarida, H.

PY - 2006/7

Y1 - 2006/7

N2 - Electrical excitability of the Orbicularis oculi muscle was assessed on 34 cadavers, according to the subjective grading of muscular response developed by Kline and Kline. In the first group of 28 cadavers, electrical excitation was done to investigate its relationship with the time since death. Direct electrical excitation was through the use of needle electrodes to provide 50 V direct current impulses of 10ms duration at 50 cycles/sec. From electrical excitation of the first group of 28 cadavers, it was found that there was significant negative correlation between the degrees of muscular response and the postmortem interval, and that there was a linear relationship between the two variables. Visible electrical excitation could be elicited up to the 8th hour after death for which the range of estimates of the postmortem interval for each degree of response have been calculated. For the second group of cadavers, it was found that electrical excitation was able to predict the actual postmortem interval for 5 out 6 cadavers within one standard error of the predicted value. The limitations and advantages of this method are discussed It is concluded that electrical excitation of the orbicularis oculi muscle can be of practical use for estimating the time since death for appropriate cases in the early postmortem period.

AB - Electrical excitability of the Orbicularis oculi muscle was assessed on 34 cadavers, according to the subjective grading of muscular response developed by Kline and Kline. In the first group of 28 cadavers, electrical excitation was done to investigate its relationship with the time since death. Direct electrical excitation was through the use of needle electrodes to provide 50 V direct current impulses of 10ms duration at 50 cycles/sec. From electrical excitation of the first group of 28 cadavers, it was found that there was significant negative correlation between the degrees of muscular response and the postmortem interval, and that there was a linear relationship between the two variables. Visible electrical excitation could be elicited up to the 8th hour after death for which the range of estimates of the postmortem interval for each degree of response have been calculated. For the second group of cadavers, it was found that electrical excitation was able to predict the actual postmortem interval for 5 out 6 cadavers within one standard error of the predicted value. The limitations and advantages of this method are discussed It is concluded that electrical excitation of the orbicularis oculi muscle can be of practical use for estimating the time since death for appropriate cases in the early postmortem period.

KW - Electrical excitation/stimulation

KW - Orbicularis oculi

KW - Postmortem period

KW - Rigor mortis

KW - Time since death

UR - http://www.scopus.com/inward/record.url?scp=34247891532&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247891532&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:34247891532

VL - 23

SP - 1

EP - 6

JO - Indian Journal of Forensic Medicine and Toxicology

JF - Indian Journal of Forensic Medicine and Toxicology

SN - 0973-9122

IS - 2

ER -