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
edit
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

VEPs 2

Visual evoked potentials 2

QuestionAnswer
The typical distance from the light source to the patient in flashing VEPs is __ - __ cm 30, 45
Background luminance with flashing VEPs is kept __ (low / high) low
A stimulus luminance for flashing VEPs increases, the amplitude of the VEP __ (increases/decreases) and latency __ (increases/decreases) increases, decreases
Flashing VEPs are set at a frequency of no faster than __ per secon 2
The first channel for a flashing VEP MO-ear
The second channel for a flashing VEP LO-er
The third channel for a flashing VEP RO-ear
A rhythmic after discharge is seen with flashing VEP after approximately __ msec 240
Early peaks with a flash VEP are maximal over the __ cortex; later peaks are maximal near the __ occipital; vertex
Up to __% of normal subjects have no response on one side of the head with flash VEPs despite the absence of pathology 5
The flash VEP can be composed of up to __ peaks with varying polarity, amplitude and latency 7
The normal flash VEP is composed of a major positive peak with a latency between __ and __ msex and a major negative peak with a latency between __ and __ msec 50, 100, 100, 250
After __ weeks conceptual age, an occipitally negative negative peak is seen at 200-300 msec on flash VEP 24
At 24 weeks EGA, an occipitally negative peak is seen on flash VEP at __ - __ msec 200, 300
At __ - __ weeks EGA, a positive peak precedes the negative peak on flash VEP with a latency of < 200 msec 32, 35
As pupil size increases, stimulus intensity __ (increases/decreases) increases
The criteria for an abnormal flash VEP Absence of a response with stimulation of one eye
Created by: schmittse
Popular Physiology 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