Your institution is subscribed to Read Institutional Edition. Log in or Sign Up to read full text articles.


[Number of spike-components contributing to the motor unit potential (author's transl)]

B Thiele, A Böhle
EEG-EMG Zeitschrift Für Elektroenzephalographie, Elektromyographie und Verwandte Gebiete 1978, 9 (2): 125-30
40 motor unit potentials recorded with concentric needle electrodes (Fig. 1) from the extensor digitorum communis muscle were analysed in order to find out the number of contributing muscle fibre action potentials. A "fractionation" of the motor unit potential was achieved by maintained voluntary activity under ischemic condition leading to a consecutive transmission block in the motor endplates within the active motor unit. Thus one after the other muscle fibre action potential failed to occur leading to a stepwise reduction of the motor unit potential which finally was abolished (Fig. 2 and 3). With technique it was shown that 65% of the area of the investigated motor unit potentials were composed of two to twelve (mean 5) muscle fibre action potentials (Fig 4). No correlation between the number of spike-components and duration or amplitude of the motor unit potential was found (Fig. 5). The non-analysed area of the motor unit potential probably represented activity of more distant muscle fibres of the motor unit.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Trending Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.