Workshop - "SFEMG and measuring jitter with concentric needle electrodes."

Meet Don Sanders and Janice Massey at AANEM/Phoenix, Nov 1, 2023

Guidelines for SFEMG - 2022

Read the full publication here...


Has anyone seen/recorded triangular after potentials with concentric needle electrode?
If so, are they similar to those recorded with SFE?
Please report to Don or Erik.

Trigger and JSum details

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Take a look here...

Guidelines for SFEMG - 2019

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SFEMG Videos

The extensive set of SFEMG videos is found here...

Recent Publications


Sanders DB, Kouyoumdjian JA, Stålberg EV. ​Single fiber EMG and measuring jitter with concentric needle electrodes. Muscle Nerve 2022;1-15.


Lee I, Sanders DB, et al. Single-institutional reference values for concentric needle jitter analysis using the extrapolated reference values procedure: Comparison to published reference values. Muscle Nerve 2021;63(1):113-116.


Matamala JM, Verdugo RJ. Single fiber EMG guidelines: Moving towards a "single" methodological consensus. Clin Neurophysiol 2019;130(8):1399-1400.

Sanders DB, Arimura K, et al. Guidelines for single fiber EMG. Clin Neurophysiol 2019;130(8):1417-1439.

Stålberg E, van Dijk H, et al. Standards for quantification of EMG and neurography. Clin Neurophysiol 2019;130(9):1688-1729.


Lispi L, Leonardi L, et al. Longitudinal neurophysiological assessment of intramuscular type-A botulin toxin in healthy humans. Neurol Sci 2018;39(2):329-332.

Nandedkar SD, Sanders DB, et al. The extrapolated reference values procedure: Theory, algorithm, and results in patients and control subjects. Muscle Nerve 2018;57(1):90-95.

Oliveira Santos M, Swash M, et al. Concentric or monopolar electrode for jitter determination in orbicularis oculi. Clin Neurophysiol 2018;129(12):2552-2556.

Stålberg E, Kouyoumdjian JA, et al. Problems in Comparing Jitter Values Obtained with Voluntary Activation and Electrical Stimulation. J Neuromuscul Dis 2018;5(2):225-230.


Pitt MC. Use of stimulated electromyography in the analysis of the neuromuscular junction in children. Muscle Nerve 2017;56(5):841-847.

Pitt MC, Jabre JF. Determining jitter values in the very young by use of the e-norms methodology. Muscle Nerve 2017;55(1):51-54.

Sanders DB, Massey JM. Does change in neuromuscular jitter predict or correlate with clinical change in MG? Muscle Nerve 2017;56(1):45-50.

Stalberg E, Sanders DB, et al. Pitfalls and errors in measuring jitter. Clin Neurophysiol 2017;128(11):2233-2241.


Stålberg E, Sanders DB, et al. Reference values for jitter recorded by concentric needle electrodes in healthy controls: A multicenter study. Muscle Nerve 2015.


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