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8 Cards in this Set
- Front
- Back
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Posterior EEG activity in age related changes
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earliest waking posterior rytmic activity of 3-4 Hz occors at 3 mo. There are individual differences in dominant frequencies at all ages. Up to 2 y is the fastest Posterior rhythms may decrease in freq from y2y
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Voltage of Dominant Posterior Rhythm in Children
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For the first 2-3 years voltage increases but in general decreases after 1y. voltage finally levels off during adolescence
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Posterior Slow Rhythms in Children
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posterior rhythms increase in rate from early childhood until maturity with an intermingling of slow waves. This causes polymorphic waves with sharp elements and are most prominant in ages 6-12
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Anterior EEG activity in Children
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Rhythmic 6=7 Hz theta activity may also be seen in the anterior regions as early as 3 to 5 years old.
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Sleep Development in Children
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6w to 2mo sleep spindles appear, k-complex appears at 4-6 mo. both spindles and k-complexes start off as asynchronous.
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Generalized 3 Hz spike-and-wave complex in Children
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may appear in waking or augmented in sleep. the 3 Hz is best seen in stages 3 and 4 sleep and is considered extremely abnormal
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Sharp-and-slow-complex in children
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Made up of alternating sharp waves (duration 70-200 msec) and slow waves in the 1.5-2.5 Hz range. The peak age is 2-6 years and is bilaterally symetrically and is abnormal
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Hyparrhytmia in Children
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Distinguished by 0.5 to 3 Hz multifocal asynchronous spikes and sharp and slow waves all of excessively high voltage from 300 greater than 2,000 uV. Between ages 2 mo and 5 years and is abnormal
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