practice for EEG registry
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| Describe MU | show 🗑
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| Describe the third rhythm (temporal lobe alpha) and its occurance | show 🗑
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| describe slow alpha variant and its occurence | show 🗑
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| show | 16 to 20 hz posterior rhythm can be armonic (twice as fast) as the patients alpha rhythm Occurs in the wake state with eyes closed attenuates with eye opening.
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| show | Periodic sharp activity that progresses into monorhythmic theta pattern of sharply contoured theta. Occurs in the waking state of older patients no symptom or clinical changes are associates with discharge
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| Describe rhythmic midtemporal theta of drowsiness and its occurence. | show 🗑
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| show | Sharply contoured trains of 16 and 6 hz spike waves in the posterior region maximal at T%\T^ best recorded from widely spaced electrodes so best seen on a referential montage contralateral ear drowsy or N1
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| Describe positive occipital sharp transients of sleep (posts) and their occurrence | show 🗑
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| show | surface positive waves in the occipital regions that are transient activity associated with saccadic eye movements while patient eyes are open that block with eye closure
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| Describe wickets spikes and their occurrence. | show 🗑
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| show | parietal or occipital low voltage spike and wave complexes that occur as a single wave or in brief bursts the spike is very low voltage om comparison with the slow wave drowsiness
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| show | Low voltage sharp waves that occur on one or both sides in the temporal and frontal regions; may mimic EKG artifact seen most often on referential montages occurs n1 and N2 sleep
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