Sign in to follow this  
Followers 0
rajeevkrishnadas

EEG Revision 1

9 posts in this topic

1. Electroencephalographic signals are generated by the cerebral cortex. T

2. EEG depends on afferent inputs from subcortical structures, including the thalamus and brainstem reticular formation. T

3. Thalamic afferents to the cortex are responsible for the alpha rhythm and sleep spindles. T

4. In the case of epileptiform activity, 20-70% of cortical spikes do not appear on the electroencephalogram. T

5. EEG is rarely specific as to cause because different diseases and conditions produce similar electroencephalographic changes. T

6. Spontaneous fluctuations of voltage potential at the scalp of 10-100 µV are seen normally. T

7. Alpha activity is most prominent over the occipital area in normal individuals. T

8. The normal alpha rhythm is attenuated (or blocked) by eye opening, mental activity, and drowsiness. T

9. Beta activity normally is present over the frontal areas. T

10. Beta activity may be prominent in patients receiving barbiturate or benzodiazepine drugs. T

11. Adults normally may show a small amount of theta activity over the temporal regions when awake. T

12. The percentage of intermixed theta frequencies increases after age 60. T

13. The amount and amplitude of slow activity (theta and delta) correlate closely with the depth of sleep. T

14. Slow frequencies are abundant on the electroencephalograms of newborns and young children. T

15. EEG is usually recorded using the international 10 20 system. T

16. Hypsarrhythmia is associated with infantile spasms (West's syndrome). T

17. 3-Hz spike-and-wave activity associated with typical absence attacks. T

18. Generalized multiple spikes and waves (polyspike wave) associated with myoclonic epilepsy. T

19. The term alpha coma refers to the apparent paradoxical appearance of monorhythmic alpha frequency activity in the electroencephalogram of a comatose patient. T

All references to Bradleys Textbook of Neurology in clinical practise

Share this post


Link to post
Share on other sites
this is fantastic.all ecg sorted.

I thought that was eEg sorted....

anyway.

Share this post


Link to post
Share on other sites

What will I do without Suerego cafe.

Thanks alot doeiannevergreys

Share this post


Link to post
Share on other sites
is it a coincidence that all the eeg answers are  True?

nope... that was purposeful...

modified to make it true.. so it is easy to remember as facts...

all answers are right... 100%

Share this post


Link to post
Share on other sites

As am running out of time to learn by-heart the EEG's. and according to our friend here any question with EEG is TRUE,

Merci to all

Share this post


Link to post
Share on other sites
Sign in to follow this  
Followers 0