FINAL EXAM (END 201, 202, and 203) Questions With Solutions
0 view 0 purchase
Course
Electroencephalography
Institution
Electroencephalography
FINAL EXAM (END 201, 202, and 203)
Questions With Solutions
Founding Fathers of Neurological Testing o 1875 - Richard Caton records the first
electrical activity of a brain from animals
o 1890 - Adolf Beck identified the localization of senses on the brain with evoked potentials
o 1929 - Han...
FINAL EXAM (END 201, 202, and 203)
Questions With Solutions
Founding Fathers of Neurological Testing o 1875 - Richard Caton records the first
electrical activity of a brain from animals
o 1890 - Adolf Beck identified the localization of senses on the brain with evoked potentials
o 1929 - Hans Berger identifies the 1st recording of the electric field of the human brain
-Berger is known as the 'Father of EEG'
o 1951 - George D. Dawson demonstrated the evoked potential of an ulnar nerve
Evolution of neurological testing o Electroencephalogram (EEG)
-First recorded brain activity in humans in 1924 using a galvanometer designed for
electrocardiograms
o Evoked Potentials (EP)
-An expansion of EEG that records the brain's response to external stimuli of the nervous system
o Far Field Potential (FFP)
-An expansion of Evoked Potential that records the deep brain response to external stimuli
o Digitalization of Neurologic Testing
-The introduction of CT scans and MRI to show brain anatomy in the 1970's
-Electroencephalographs move from analog to digital recordings in the 1980s
, FINAL EXAM (END 201, 202, and 203)
Questions With Solutions
Diagnostic tests that evolved from the EEG o Evoked Potentials
-Record the brain's electrical response to motor and sensory stimuli
-Created by extracting the Evoked Potential during an ongoing EEG via photographic summation
o Types of Evoked Potentials include:
-Visual Evoked Potential (VEP)
•Records the brain's response to visual stimuli via the Optic Tract
-Brainstem Auditory Evoked Potential (BAEP)
•Records the brain's response to auditory stimuli via the Auditory Tract
-Somatosensory Evoked Potential (SSEP)
•Records the brain's response to external stimuli via the Peripheral Nervous System
The evolution of the EEG from analog to digital o Analog EEG
-Recorded on paper using pens and ink
-Required frequent maintenance (i.e. paper, ink, calibration) to obtain a recording
-Required continuous monitoring by an EEG Technician
-EEG Records were at a minimum 120 pages long
o Digital EEG
, FINAL EXAM (END 201, 202, and 203)
Questions With Solutions
-Uses computer technology to record and save records
-Records are able to be viewed in different formats
-Allows for continuous recordings without an EEG Technician
-Recordings can be accessed remotely by physicians globally
-Computer data analysis enables additional insights which may have not been previously
identified
EEG is a brain function diagnostic test that provides valuable information to other neurological
fields o Neurologists
-Helps identify seizures, encephalopathies, tumors, sleep disorders, brain injuries, etc.
oNeurosurgeons
-Used to monitor patients before, after, and during surgeries
o Psychiatrists
-Helps to determine if the cause of a patient's problems are neurological
DIGITAL EEG o Digital EEG is providing the tech & physician with greater flexibility in
the recording & interpretation of the EEG
, FINAL EXAM (END 201, 202, and 203)
Questions With Solutions
o The following guidelines are in a format that examines the essential characteristics of digital
EEG systems
Acquisitions •EEG Amplifiers:
-A minimum of 25 electrode inputs (21 on the scalp, ground, reference & 2 extra) are
recommended and ideally, 32 electrode inputs (9 extra electrodes) should be available when
recording
Analog to digital conversion: •Horizontal resolution -a sampling rate of 3 times the
highest frequency being recorded as recommended
•Vertical resolution -a resolution of 16 bits or higher is preferred for precision
Disk space: •The data is compressed on acquisition & allows approx. 24 hours of EEG
data to be stored on a 1-gigabyte hard drive
Screen •The minimum recommended size for the display screen is 17" with specifications
of 100 pixels per second & a vertical resolution minimum of 2 pixels per millimeter
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller UpperClass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $32.49. You're not tied to anything after your purchase.
