Somatosensible Reizantworten von Nerven, Rückenmark und Gehirn (SEP)

Prediction of long-term disability in multiple sclerosis

“…For spinal stimulation the rim of the coil was placed over the seventh cervical and fifth lumbar vertebra. When MEPs were identifiable, the shortest onset latency was 14 and values exceeding the normal mean by 2.5 standard deviations (SDs) were regarded as abnormal. VEPs were recorded from an active electrode placed 3 cm above Oz and a reference electrode at Fz.…”

“…When MEPs were identifiable, the shortest onset latency was determined and used for calculating the central motor conduction time (CMCT). CMCT was assessed according to published normal values, 14 and values exceeding the normal mean by 2.5 standard deviations (SDs) were regarded as abnormal. VEPs were recorded from an active electrode placed 3 cm above Oz and a reference electrode at Fz.…”

Combined visual and motor evoked potentials predict multiple sclerosis disability after 20 years

“…23 In brief, only the latencies of the most robust components were used for further analysis; for VEP: component P100; for MEP to abductor digiti minimi muscles and anterior tibial muscles: central motor conduction time (CMCT). Normal values were taken from our own laboratory for VEPs and from Stoehr et al, 1996 30 for MEPs to upper and lower extremities (height adjusted). As in prior examinations, reproducibly absent VEP or MEP responses were substituted by the longest CMCT or P100 latency measured in the whole cohort.…”

Intraoperatives elektrophysiologisches Monitoring mit evozierten Potenzialen

“…Die Latenz nach N.-tibialis-Stimulation beträgt über dem sensorischen Kortex ca. 40 ms (P40/N50-Potenzial, [128]). Ein wichtiger Parameter zur Diagnostik der zerebralen Funktion ist die zentrale Leitungszeit ("central conduction time", CCT).…”

“…Abb. 1; [128]). Mit zunehmender Anzahl der Sweeps steigen einerseits das Signal-Rausch-Verhältnis und damit die Genauigkeit der Amplituden-sowie Latenzbestimmung, andererseits verlängert sich aber auch die Analy- …”