Patient

Decrement (Trapezius)

Muscle

Fibrilations

Positive sharp waves

Form of action potential

EMG pattern

#1

35%

Right  biceps br.

+

+

Polyph.

Myogenic

Left deltoid

+

+

Bi-/Polyph.

Myogenic

Right vastus  med.

-

-

Bi-/Polyph.

Myogenic

#2

20%

Right orbicularis oris

-

-

Bi-/Polyph.

Myogenic

Right trapezius

-

-

Bi-/Polyph.

Myogenic

Left trapezius

-

-

Biph.

Myogenic

Right deltoid

-

-

Bi-/Polyph.

Myogenic

Right interosseus 1

-

-

Bi-/Polyph.

Myogenic

Paraspinal muscles, thoracic level

++

++

-

-

Right vastus lat.

-

-

Bi-/Polyph.

Myogenic

Right anterior tribal

-

-

Bi-/Polyph.

Myogenic