Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

EEG Instrumentation

practice for EEG registry

QuestionAnswer
Define differential amplifier. A differential amplifier amplifies only the difference in voltage between the two inputs. It does not amplify equal (common) voltages at the two inputs. The more the inputs vary in voltage the more there is to amplify.
Define input impedance. Input impedance is impedance between components of the differential amplifier. It must be high for optimal functioning of the amplifier. Must be a least 10 mega-ohms.
Describe the polarity convention of an EEG instrument. INPUTS UP rules Down Rules input 1 negative positive Input 2 positive negative
The rule in the design of EEG instruments is that if input 1 is positive with respect to input 2, the deflection of that channel will be down
Define amplifier a combination of electric components designed to increase voltage.
Define sensitivity a measure of how much voltage is required to cause a deflection of a certain distance; in EEG usually uV/mm equation S=V/A S = sensitivity V= voltage A=Amplitude
The rule in the design of EEG instruments is that if input 1 is negative with respect to input 2, the deflection of that channel will be UP
Define gain. The ratio of output to input signal. Gain has no units of measurement.
Define time constant. The time required for the waveform to fall to 37% of the peak deflection. Describes the effect of the low frequency filter on square wave pulse.
Define common mode rejection(CMRR) Common mode rejection ratio (CMRR) is set by the EEEEG CMRR compares what is common to the amplifiers (for example 60 Hz) to what is amplified and should be a least 10,000
Created by: moeegtech
Popular EEG sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards