Cnim Abret Exam 2023 With 100% Correct Answers

in which of the following evoked potentials is the scalp position of recording electrodes most critical? Lower extremitity SSEP if an evoked potential has a voltage of 10 uV and the associated noise has a voltage of 50uV, waht is the signal to noise ration after 100 averages responses? 2:1 To display median nerve SSEP response as an upward deflection, which of the following must be known? waveform polarity and polarity convention of the amplifier inputs If an amplifier is rated as having 120dB common mode rejection ratio, which of the following ratios of in-phase to out-of-phase signals would be expected? 1,000,000:1 which cranial nerves innervate the extraocular muscles? abducens which is a SSEP far-field subcortical potential N34 (UE far-field subcortical) what is the segmental motor innervation of the pernoeus longus? L4, L5, S1 what opposes any change in current? Inductance the dorsal column pathways synapse at which loci on their way to the sensory cortex? nucleus cuneatus and thalamus With referential recording, maximal amplitude cortical evoked potentials following stimulation of the left posterior tibial nerve usually would be found between C3 and Cz For preoperative posterior tibial SSEPs, which of the following would be the best ipsilateral location for the ground electrode? Calf To record the afferent volley after posterior tibial nerve stimulation, an electrode should be placed on the: T5 spine Which of the following would result in the best resolution in the analog-to-digital converter process? The maximal peak-to-peak signal amplitude should match the converter range