Eeg Part 1 Questions 160-180

Front 1

The common mode rejection ratio is usually 10,000:1 but hypothetically imagine another instrument, in which the CMR is 100,000:1. If 60 hz interference reach these 2 inputs of the amp, how much of it will actually be amplified?

Back 1

1 microvolt

Front 2

The EEG change most often seen w/ Sturge-Weber syndrome is

Back 2

Voltage depression over the affected hemisphere.

Front 3

Midline theta rhythm is a 5-7 hz "spiky" waveform which occurs in the frontocentral vertex head regions and is found in what % of the general population?

Back 3

20-40%

Front 4

___ causes decreased carbon dioxide, vasoconstriction and decreased peripheral blood flow.

Back 4

Hypocapnia, hyperventilation, cheyne-stroke breathing, valsalva maneuver.

Front 5

Of extended duration; slow to develop:

Back 5

Chronic

Front 6

Most sz are

Back 6

Idiopathic

Front 7

Why is the Wilson lawsuit an important market in EEG tech?

Back 7

Back (Definition)

Front 8

In normal pts, frontal and anterior temporal electrodes may record _____, indicating the onset of drowsiness.

Back 8

SEMS

Front 9

Fast Fourier transform

Back 9

The method which converts EEG data from time domain to the freq domain

Front 10

Epilepsy is __

Back 10

A collection of diseases and syndromes united by the occurrence of sz

Front 11

Front (Term)

Back 11

Diffusely slow w/ onset of Beta

Front 12

Inflammation of the spinal cord.

Back 12

Myelitis

Front 13

Certain atomic nuclei w/ an odd # of protons or neutrons or both are subjected to be strong magnetic field and the radiated electromagnetic signal Are analyzed. These signals are then constructed into imagines.

Back 13

MRI

Front 14

Mvt of cancer cells from 1 part of the body to another

Back 14

Metastasis

Front 15

Midbrain 1. The part of the brain developed from the middle of the 3 primary vesicles of the embryonic neural tube, comprising the tectum and the cerebral peduncles. The middle of the 3 primary brain vesicles in the embryo, lying between the prose cephalon and the rhombus cephalon. Messncephal

Back 15

Mesencephalon

Front 16

Growing worse; cancerous; resisting tx

Back 16

Malignant

Front 17

EOG refers to:

Back 17

Electrooculogram, eye mvt monitoring electrode

Front 18

Sleep spindles are seen ___

Back 18

Usually within the beta freq band, central and frontocentral head region, are often seen in stage II sleep

Front 19

Breach rhythm is produced by___.

Back 19

A skull defect

Front 20

Front (Term)

Back 20

Diffusely slow w/ onset of Beta

Front 21

Cyclically increasing and decrease respiratory depth and rate, separate by apneic phases, suggesting bilateral deep cerebral hemispheric of diencephalic dysfunction or may be produced by any encephalopathic state:

Back 21

Cheyne- Stroke respiration

Front 22

Around blood vessel

Back 22

Perivascular

Front 23

Lateral rectus spikes would be most likely to be recorded in which of the following electrodes?

Back 23

F7 or F8

Front 24

Sometimes Mvts are the direct result of paroxysmal discharge. Which of the mvts listed are likely caused by a paroxysmal discharge?

Back 24

Myoclonic jerk

Front 25

Spectral characteristics

Back 25

The relative contribution of delta, theta, alpha and beta in an EEG recording

Front 26

Horizontal resolution

Back 26

Dictates freq resolution of the digitized signal

Front 27

Vertical resolution

Back 27

Dictates amp resolution and is usually 12 bits

Front 28

Screen display

Back 28

In older instruments may cause poor display resolution of both amp and freq