. 2022 Feb 23;92(6):1527–1534. doi: 10.1038/s41390-022-01992-2

Table 3.

Summary of EEG studies of FGR/SGA neonates during infancy/childhood.

Study	EEG channel	Popn (N)	Mean GA	PMA of EEG	SWC	Spectral power	Mean EEG amplitude
Cohen et al., 2018	C3–M2, O1–M2 or C4–M1, O2–M1	p-FGR (13)	32^3/7 (24^6/7–35^5/7)	First month; sixth month		↓Relative delta power was lower in QS at 1 m ↑Relative theta, alpha and beta power were higher in QS at 1 m
Cohen et al., 2018	C3–M2, O1–M2 or C4–M1, O2–M1	p-AGA (17)	32 (27^3/7–35^5/7)	First month; sixth month
Yiallourou et al., 2018	C4–M1, O2–M1, F4–M1	p-FGR (17)	30 ± 1	5–12 years	↑Sleep duration Total—509 mins* ↑NREM—335 mins* ↑N2–198 mins* ↓N3–101 mins* Sleep Proportion ↑N2–50%* ↓N3–25%*	↑Total, delta, theta, and alpha power were higher
Yiallourou et al., 2018	C4–M1, O2–M1, F4–M1	p-AGA (15)	29 ± 1	5–12 years	Sleep duration Total—497 min NREM—295 mins N2–154 min N3–112 min Sleep proportion N2–42% N3–32%
Ozdemir et al., 2009	10–20 system	t-SGA (40)	39.4 ± 0.8	first month; third month		↑Relative delta power 88/89%** 1 m/3 m at CzC4 in QS	↓30*/38* 1 m/3 m
Ozdemir et al., 2009	10–20 system	t-AGA (20)	39.7 ± 0.7	first month; third month		Relative delta power 85/83% 1 m/3 m at CzC4 in QS	66/74 1 m/3 m

↑ indicate an increase in the SGA/FGR group, ↓ indicate a decrease in the FGR/SGA group.

GA gestational age, PMA postmenstrual age, SWC sleep–wake cycle, NREM non-rapid eye movement, N3 deep sleep, prefix t term, prefix p preterm, QS quiet sleep.

*p < 0.05; **p < 0.01; ***p < 0.001.