Random?
Temporal lobe epilepsy accounts for what % of all adult patients with epilepsy?
60%
What medication can worse absence seizures?
Carbamazepine (Tegretol)
Type of electrode material safe for MRI verification
platinum and nichrome
True of False: A notch filter should be applied after inspection of the recording without a notch filter in order to detect electrode artifacts.
True
type of cortical responses over the primary somatosensory cortex to median SSEPs
negative nearfield
The majority of seizures in the intensive care unit are:
Non-convulsive
Three most common forms of behavioral monitoring
self, observer, video
What are the characteristics of a pressure zone microphone?
mounts to flat surfaces for reduced echo-reverberation, but picks up extraneous sound; deiscrete and less vulnerable to handling
Minimum Horizontal Resolution is ______ pixels
1,280 pixels
cortical potentials for median nerve SSEP are recorded from
ipsilateral parietal lobe
first line treatment for partial seizures
Carbamazepine (tegretol)
Longer lasting than tube cameras, good resolution, no "blooming" and no image retention ("burn in"), tolerates difficult lighting conditions, is available with built-in infrared illuminators for night monitoring
Solid-state sensor monochrome
Epidural, subdural, intracerebral, foramen ovale impedance measurements can be safely performed within currents in the range of _______nA for electrodes insterted intracranially.
10
The capacity of how many channels are found in the majority of LTME recording equipment?
128
What are characteristics of a unidirectional microphone?
Picks up sound coming directly in front of the microphone head, eliminates extraneous noise, requires readjustment with patient movement, usually attached to video camera
ACNS recommendations for recording clinical EEG on digital media state that the sampling rate should be
sampling rate of 200 or higher
Requires illumination of 0.5 footcandle, satisfactory for daylight monitoring conditions, unsatisfactory for nocturnal monitoring under reduced lighting conditions.
Standard monochrome (black and white)
The 4 types of intracranial electrode placements for surgical resection as stated by ACNS
epidural, subdural, intracerebral, foramen ovale
What are the 3 types of mobility for video cameras?
fixed position camera, mobile or portable camera, remote pan/tilt device
Which grid contacts most likely represent the location of the central sulcus?
5 & 6
error in the timing of the sampling of waveforms and was a problem in early digital EEG instruments but no longer a problem in modern digital EEG instruments
sampling skew
Perceived optical resolution is 525 line pairs, satisfactory for LTME, higher optical resolution of up to 1,000 line pairs available in some monitors
Monochrome Display Monitor
What may be the impact of cortical stimulation in the circled area?
Language incomprehension
What are the two types of irises for video camera lenses?
standard and automatic
Perceived optical resolution in 250 pairs, minimal acceptable standard for LTME. The current optimal standards are 1600 x 1200 pixels with a screen diagonal size of 20 inches or more
Color Display Monitor