Why does threshold-level change in transcranial motor evoked potentials during surgery for supratentorial lesions?

Tammam Abboud, Torge Huckhagel, Jan-Heinrich Stork, Eik Vettorazi, Manfred Westphal & Tobias Martens
Objective: Rising threshold-levels during monitoring of motor evoked potentials (MEP) using transcranial electrical stimulation (TES) have been described without damage to motor pathway in cranial surgery, suggesting the need for monitoring of affected and unaffected hemisphere. We aimed to determine[for full text, please go to the a.m. URL]
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