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Table 1 Scoring system of amplitude integrated electroencephalography (aEEG)

From: Benefits of starting hypothermia treatment within 6 h vs. 6–12 h in newborns with moderate neonatal hypoxic-ischemic encephalopathy

Score Curve variability SWC Lower boundary values Narrow-band width and lower boundary voltage
0 No variation curve None Seriously inhibited (< 3 μV) Amplitude suppression: low amplitude (≤15 μV) and low voltage (5 μV)
1 Some curve, no sinusoidal ariation Starting occurrence period Some inhibition (3~ 5 μV) Immaturity amplitude: high amplitude (> 20 μV) or medium amplitude (15~ 20 μV) and low voltage (5 μV)
2 Sinusoidal ariation No clear No inhibition (> 5 μV) Immaturity amplitude: high amplitude (> 20 μV) and high voltage (> 5 μV)
3   Clear period, but suspension   Gradually mature amplitude: medium amplitude (15~ 20 μV) and high voltage (> 5 μV)
4   Clear period, no suspension   Mature amplitude: low amplitude (< 15 μV) and high voltage (> 5 μV)
5   Rule and mature period   
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