Table 1.

Outcomes and main results of reviewed studies. Peracchia S, Curcio G.

STUDY	SOL	TST	TIB	REM	nREM	SWS	SSt	SS	ST	SQ	VLF	HR	Temp	VM
Higuchi et al.57	+			-		=		-		-		+	+
Dworak et al.51	+	=		=		-	+*							-
Ivarsson et al.69											+	+
Weaver et al.46	+			=	=	=		-				=
Brunetti et al.53		-
Van den Bulck49			-***						+
King et al.52	+	-		-						-
Ivarsson et al.48								-				+**
Wolfe et al.47
Exelman & Van den Bulck50	+							+		-
Twenge et al.54		-
Arrona-Palacios56		-	-					+

NOTE: (+) increase compared to the control group and/or baseline condition; (-) reduction compared to the control group and/or baseline condition; (=) no changes. SOL: sleep onset latency; TST: total sleep time; TIB: time in bed; REM: rapid eye movement sleep; nREM: non rapid eye movement sleep; SWS: slow wave sleep; SSt: variations in sleep stages; SS: subjective sleepiness; ST: subjective tiredness; SQ: sleep quality; VLF: very low frequency; HR: heart rate; Temp: temperature; VM: verbal memory; VsM: visuospatial memory; WM: working memory; SA: sustained attention; Ins: insomnia; F: fatigue.

^*limitedly to stages 2 and 4

^**limitedly to violent videogames

^***both in weekdays and weekend days