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Neuro > EMG > Flashcards

EMG Flashcards

1
Q

Insertional activity

A

Burst of activity of a needle insertion

Increased with denervated muscle and many muscular diseases

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2
Q

Electrical silence

A

Once needle is inserted, normal muscle produces nothing

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3
Q

Motor unit potentials

A

Decreased in LMN injury

Increased with reinnervation of previously denervated

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4
Q

Complete LMN lesions

A

Fibrillation potentials

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5
Q

Partial LMN lesions

A

Fibrillation and fasciculation potentials

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6
Q

Fasciculations

A

Spontaneous contraction of most/all fibers

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7
Q

Fibrillation potentials

A

Spontaneous contractions of individual fibers

Evident with denervation 1-3 weeks

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Neuro (23 decks)

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