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8 Cards in this Set

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Posterior EEG activity in age related changes
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
Voltage of Dominant Posterior Rhythm in Children
For the first 2-3 years voltage increases but in general decreases after 1y. voltage finally levels off during adolescence
Posterior Slow Rhythms in Children
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
Anterior EEG activity in Children
Rhythmic 6=7 Hz theta activity may also be seen in the anterior regions as early as 3 to 5 years old.
Sleep Development in Children
6w to 2mo sleep spindles appear, k-complex appears at 4-6 mo. both spindles and k-complexes start off as asynchronous.
Generalized 3 Hz spike-and-wave complex in Children
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
Sharp-and-slow-complex in children
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
Hyparrhytmia in Children
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