Exam All Answers and Illustrations
Given
2 basic montages used during electrode screening - 🧠 ANSWER ✔✔1)
numeric order bipolar
2) referential
imaging that measures brain synchronicity - 🧠 ANSWER ✔✔coherence
imaging
type of software helpful for quantifying seizures in ICU/EEG - 🧠 ANSWER
✔✔trending
1st consideration when guarding against skin breakdown - 🧠 ANSWER
✔✔electrode type
,main MEG imaging techniques - 🧠 ANSWER ✔✔-single current dipole
(ECD)
-current density/distribution (MR-FOCUSS)
-beamformer (spatial filter)
MRI safe electrodes guard against - 🧠 ANSWER ✔✔magnetic influence on
electrodes
strengths of MEG - 🧠 ANSWER ✔✔-correlates function and anatomy
-millisecond temporal resolution
-millimeter spatial resolution
-non-invasive
Phase II EEG quality is greatly improved by implantation of - 🧠 ANSWER
✔✔grids for reference and ground
only imaging technique that is useful for determining seizure focus - 🧠
ANSWER ✔✔SPECT
MEG detects signals generated by - 🧠 ANSWER ✔✔pyramidal neurons
weaknesses of MEG - 🧠 ANSWER ✔✔-expensive
, -requires magnetically shielded room
-requires helium
True or False: a pedometer is a type of MEG detector - 🧠 ANSWER
✔✔false
ACNS recommendation for the time frame of physician interpretation of
LTM - 🧠 ANSWER ✔✔read data collection after it is complete
cooling below 32 degrees C increases risk of - 🧠 ANSWER ✔✔-focal
cerebral deficit
-infection
-coagulopathy
-arrhythmia
unable to form and store new memories - 🧠 ANSWER ✔✔anterograde
amnesia
local networks - 🧠 ANSWER ✔✔-least expensive
-data cannot be viewed remotely
-are like most EMU setups
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