CNIM – SSEP questions with correct answers

When recording a PTN SSEP, the Fpz-Cs5 channel records... - Answer N34 Subcortical far-field potentials In the 10-20 system of electrode placement, the point 20% (of the nasion-ion distance) anterior to Cz is called... - Answer Fz An electrode measured 20% lateral to Cz on the right using 10-20 system is... - Answer C4 P14 is a far-field, subcortically generated response which probably reflects... - Answer Caudal medial lemniscal activity Upper SSEPs If over three hours the PTN cortical response attenuates while subcortical is stable... - Answer Keep monitoring subcorticals In general, filter settings for SSEP recordings... - Answer Can be narrower for cortical than peripheral responses The initial waveform recorded of a near-field PTN cortical potential is... - Answer Positive due to electronic depolarization of the membrane under the recording electrode.