PMID- 25570755
OWN - NLM
STAT- MEDLINE
DCOM- 20151006
LR  - 20200928
IS  - 2694-0604 (Electronic)
IS  - 2375-7477 (Linking)
VI  - 2014
DP  - 2014
TI  - Statistics of inter-spike intervals as a routine measure of accuracy in automatic 
      decomposition of surface electromyogram.
PG  - 3541-4
LID - 10.1109/EMBC.2014.6944387 [doi]
AB  - Automated motor unit (MU) decomposition algorithms of surface electromyogram 
      (EMG) have been developed recently. However, a routine estimate of the 
      decomposition accuracy is still lacking. The objective of this preliminary study 
      was to examine the statistics of the inter-spike intervals (ISIs) of the 
      identified MUs as a measure of the decomposition accuracy, such that the ISI 
      analysis can be used as a routine procedure to assess the accuracy of the surface 
      identified MU spike timings. A surface EMG recording and decomposition system was 
      used to record EMG signals and extract single MU activities from the first dorsal 
      interosseous muscle of three healthy individuals. The estimated ISI statistics 
      were cross-validated with decomposed MUs from simultaneous intramuscular EMG 
      recordings. Our preliminary results reveal that the distribution of the ISIs, 
      specifically the deviation from the Gaussian distribution as represented by 
      secondary peaks at the short or long ISIs, can provide information regarding the 
      spurious errors and missed firing errors in the decomposition. In addition, the 
      variability (coefficient of variation) of the ISIs also correlated inversely with 
      the decomposition accuracy. These findings show that the ISI statistics can be 
      used to assess the spike timing accuracy of the identified MUs from surface EMG 
      decomposition algorithms.
FAU - Hu, Xiaogang
AU  - Hu X
FAU - Suresh, Nina L
AU  - Suresh NL
FAU - Jeon, Brian
AU  - Jeon B
FAU - Shin, Henry
AU  - Shin H
FAU - Rymer, William Z
AU  - Rymer WZ
LA  - eng
GR  - R24 HD050821/HD/NICHD NIH HHS/United States
GR  - R24 HD50821-07/HD/NICHD NIH HHS/United States
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PL  - United States
TA  - Annu Int Conf IEEE Eng Med Biol Soc
JT  - Annual International Conference of the IEEE Engineering in Medicine and Biology 
      Society. IEEE Engineering in Medicine and Biology Society. Annual International 
      Conference
JID - 101763872
SB  - IM
MH  - Action Potentials/*physiology
MH  - *Algorithms
MH  - Automation
MH  - Electrodes
MH  - Electromyography/*methods
MH  - Humans
MH  - Motor Neurons/physiology
MH  - *Statistics as Topic
EDAT- 2015/01/09 06:00
MHDA- 2015/10/07 06:00
CRDT- 2015/01/09 06:00
PHST- 2015/01/09 06:00 [entrez]
PHST- 2015/01/09 06:00 [pubmed]
PHST- 2015/10/07 06:00 [medline]
AID - 10.1109/EMBC.2014.6944387 [doi]
PST - ppublish
SO  - Annu Int Conf IEEE Eng Med Biol Soc. 2014;2014:3541-4. doi: 
      10.1109/EMBC.2014.6944387.