Page 5 - EEG of Newborn and Infants

Developmental EEG Characteristics of premature and term baby

CA Continuity of Synchrony of EEG Appearance and Disappearance of
(wk) Background Activity Background Activity Difference Specific Waveforms and Patterns
between
27-28 Awake Quiet Active Awake Quiet Active Arousal and
sleep sleep sleep sleep
Sleep

- DD - ++++ ++++ No

29-30 D DD 0 00 1. Temporal theta bursts
+ + ++ No 2. Beta-delta complexes in central region

3. Occipital very slow activity

1. Beta-delta complexes in TO region

31-33 D DC No 2. Rhythmic 1.5Hz activity in frontal leads in
transitional sleep

3. Temporal alpha bursts replace 4-5 Hz bursts

1. Frontal sharp transients

34-35 C DC +++ + +++ No 2. Extremely high voltage beta activity during
beta-delta complexes

3. Temporal alpha bursts disappear

36-37 C DC ++++ ++ ++++ 1. Continuous bioccipital delta activity with
superimposed 12-15Hz activity during active

Yes sleep

2. Central beta-delta complexes disappear

38-40 C CC ++++ +++ ++++ 1. Occipital beta-delta complexes decrease and
Yes disappear by 39wk

2. Trace alternant pattern (NREM sleep)

Mizrahi EM et al Atlas of Neonatal EEG 2004