Signal Aquisition Flashcards Preview

BCIA Exam > Signal Aquisition > Flashcards

Flashcards in Signal Aquisition Deck (10)
Loading flashcards...
1
Q

Which electrode is placed over the scalp or brain to detect a EEG activity?

A

Active

2
Q

Which term refers to the particular arrangement by which a number of pairs of electrodes in EEG channels are simultaneously is displayed in an EEG record?

A

Montage

3
Q

Sudden limb and electrode cable movement will most affect which band?

A

Delta

4
Q

What is the name of the international EEG electrode placement system?

A

10–20 international system of electrode placement

5
Q

A montage in which the reference electrode is common to multiple derivations is termed what type of montage?

A

 Common electrode reference

6
Q

The F, Z, cz , and pz sites are what percent of the total distance between the nasion in the inion starting from FPC?

A

20%

7
Q

When a faulty electrode connection results in a sudden voltage discharge, this produces…

A

Electrode, pop, artifact

8
Q

At what percentages are the EEG electrodes distance between the Nací en en en en en between the left preauricular point & right preauricular point?

A

10 or 20 %

9
Q

How can you control radio frequency artifact?

A

Remove unused sensor cables from the encoder box

 Select a 40 Hz hi pass filter

Locate encoders away from high frequency, artifact sources

10
Q

A _________  refers to both the process of recording from a pair of electrodes in an EEG channel, and the resulting in EEG record.

A

Derivation