When Looking at EMG Interference Patterns,a "Picket Fence" Appearance Suggests

question 4

Multiple Choice

When looking at EMG interference patterns,a "picket fence" appearance suggests a neuropathic lesion.The "space between the pickets" helps determine whether the neuropathy is due to an upper motor neuron lesion (UMNL) or a lower motor neuron lesion (LMNL) ,because:

• A)With a LMNL,the problem is one of motor unit Activation,resulting in a larger space between pickets
• B)With a LMNL,the problem is one of motor unit Recruitment,resulting in a larger space between pickets
• C)With an UMNL,the problem is one of motor unit Activation,resulting in a larger space between pickets
• D)With a UMNL,the problem is one of motor unit Recruitment,resulting in a larger space between pickets

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