Essential EDX Series: Volume II Insertional and Spontaneous Activity

Introduction

Technical Aspects
Action Potential
Intrumentation
Settings and Display

Insertional Activity
Lecture
Normal
Increased
Reduced
Dual Time Base – Filters
Pitfalls

Miniature End-plate
Potentials
Lecture
Waveform and Rhythm
With EP Spikes

End-plate Spikes
Lecture
Waveform and Rhythm
Interference and MEPPs
Triphasic
vs MUP

Fibrillation Potentials and
Positive Sharp Waves
Lecture
Waveform – Rhythm (Fib)
Rain on Tin Roof
FP = PSW
Low Amplitude
Waveform-Rhythm (PSW)
Trains of PSW
Not Sustained
Voluntary Activation
vs MUP
Complex Waveform

Complex Repetitive
Discharge
Lecture
Waveform – Rhythm
Abrupt Change
Slow Rate
Simple
Ephaptic Transmission

Myotonic Discharge
Lecture
Waveform and Rhythm
Percussion
“Distant Thunder”
Slow

Fasciculation Potential
Lecture
Waveform – Rhythm (Fib)
Neurogenic MUP
vs MUP
Very Slow
Pitfalls

Myokymic Discharge
Lecture
Waveform – Rhythm
Many MUPs
Two Discharges
Facial Muscle

Neuromyotonic Discharge
Lecture
Waveform and Rhythm
Induced by MUP

Cramp Discharge
Lecture
Waveform and Rhythm
Sudden Onset

Samples

Essential EDX Series: Volume II
Insertional and Spontaneous Activity
Authors Paul E. Barkhaus, M.D.; Sanjeev D. Nandedkar, Ph.D.

Video Samples
   Myokymia
   Myotonia