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Your initial signal amplitude is 0.5 μV inside a background noise of 2 μV, what will the signal to noise ratio be after 400 averages? - 5 You would expect a loss of BAEPs in which surgery? - Pontine glioma You want your vertical resolution to: - Match the amplitude of your input to maximize the...

_______________________________ is the single most important step taken to avoid contamination 1. using gloves 2. using protective eyewear 3. washing hands 4. using transportation barrier - Washing hands "Hearing level" (HL) is defined as the 1. average threshold intensity of normally hearin...

A 60 Hz artifact will most likely be caused by... - Microscope A decreasing body temperature of the surgical patient monitored with EPs can result in... - Increasing latencies of SSEPs and BAERs. A delay in the latency of one eye in a PREP is diagnostic of... - Compressive lesion Optic Neuritis ...

A global significant decrease in amplitude of cortical SSEPs w/o significant decrease in amplitude of cervical and subcortical responses in a lumbar spine surgery is most possibly due to: a) Inadequate stimulation b) Changes in anesthesia regimen c) Significant blood loss due to surgery d) Dama...

If you have attenuation of wave V of BAERs that persists until closing, what is the most likely cause? - Retraction of the cerebellum What is the most important setting when establishing baseline BAER data? - Side of ear stimulation When opening posterior fossa, what is the most likely cause for ...

A 10-bit A/D converter has how many discrete voltage values in its range? - 1024 A 10Hz signal passing through a 10 Hz locut filter will be - Reduced in amplitude by approximately 30% A 60Hz artifact would most likely be caused by: - Infusion Pump A 60Hz notch filter should not be used for evoke...

Age Specific Normative data for BAEP is necessary under what age? - 3 years of age Constant current in SSEP Stimulation defines the ability of the stimulator to increase the intensity when which other factor is changed? - Impedance at the stimulator site Define recommended number of trials to be ...

"Pre stimulus triggering? - Includes a period of recording before the stimulus A "beanbag" is often used: - In the lateral position A 60 Hz artifact will most likely be caused by: - Microscope A CMAP response to proximal facial nerve stimulation following tumor removal would indicate? - An in...

A patient with a history of diabetes is likely to also have: - Peripheral Radiculopathy, increased upper, lower SSEPs A positive event occurring in the lead connected to the negative terminal, will result in a deflection - Downward A selective dorsal rhizotomy is associated with: - Cerebral pals...

A 10Hz signal passing through a 10Hz locut filter will be: A) Reduced in frequency to approximately 7hz B) Affected in no way C) Reduced in amplitude by approximately 30% D) Eliminated - C) Reduced in amplitude by approximately 30% A 60Hz notch filter should not be used for evoked potential rec...

"Signal-to-noise ratio" relates to which of the following? 1. The amplitude of the evoked response components to the amplitude of the unrelated components 2. The ability of the instrument to resolve data and noise vertically 3. Two inputs of a differential amplifier with like negativity 4. Sen...

_________________ is the single most important step taken to avoid contamination. A- Using a transportation barrier B- Using gloves C- Washing hands D- Using protective eyewear - C "Central cord syndrome" results in A- loss of function at the level damaged due to disruption of gray matter B...

___ clicks help resolve wave V of the BAEP - Condensation 60 HZ filters cause a change of latency by a: - a. phase shift 60. Reduction of the high frequency filter: - c. Increases evoked potential latency A "ground loop" is created when: - Two separate devices are attached to the same patient a...

-70mV inside the cell - A typical resting membrane potential of a neuron is: 1 +20 mV inside the cell 2 -20 mV inside the cell 3 +70 mV inside the cell 4 -70 mV inside the cell .1 mA - What is the max allowable chassis leakage current? 1 10 uA 2 20 uA 3 .1 mA 4 10 mA 0.1 to 10 uV - Electri...