Sleep in disorders of consciousness: behavioral and polysomnographic recording

Table 2 Sleep characteristics

ID	S1, min	S2, min	SWS, min	REM, min	Spindles present	N spindles	Density, sp/min	Amplitude, μV
UWS1	88	389.5	22	4.5	0	19	0.06	19.57
UWS2	33.5	434.5	31	5.5	0	31	0.08	14.28
UWS3	68.5	194	86	0	0	0	0	0
UWS4	15.5	77.5	72.5	7.5	0	0	0	0
UWS5	171	189	27	28.5	0	10	0.06	6.86
UWS6	0	0	0	0	0	0	0	0
UWS7	72.5	77.5	2	0	0	20	0.26	11.16
UWS8	31	154	242	30.5	1	14	0.10	9.22
UWS9	64	258	102.5	30.5	1	2	0.01	7.79
UWS10	71	3	0	0	0	0	0	0
UWS11	2	479.5	200.5	0	1	89	0.21	38.29
UWS12	46.5	190.5	52	0	1	125	0.68	7.13
UWS13	49	69.5	2	1.5	1	7	0.15	6.99
UWS14	81	154	24.5	14	0	3	0.02	6.99
UWS15	24.5	64.5	68	67.5	1	65	1.13	13.62
UWS16	13.5	78.5	204.5	0	0	31	0.43	15.25
UWS (M ± SD)	52 ± 42.5	175.8 ± 147.5	71 ± 78.8	11.9 ± 18.8
MCS1	83.5	163.5	33	0	0	1	0.01	7.80
MCS2	159.5	63	0	86.5	0	15	0.39	29.10
MCS3	162	119.5	47	7.5	0	2	0.02	7.80
MCS4	46.5	187	57	19.5	0	6	0.04	10.20
MCS5	119	88.5	4	24.5	1	143	1.71	14.01
MCS6	147.5	504.5	173	126	1	3	0.01	10.45
MCS7	216.5	110.5	11.5	28	1	8	0.08	11.71
MCS8	67.5	373.5	63.5	10.5	1	4	0.01	10.71
MCS9	93	262	75	38	1	120	0.48	18.64
MCS10	75	323.5	47.5	24	0	5	0.03	8.32
MCS11	4.5	295.5	253.5	90	1	121	0.61	8.48
MCS12	169	104	15	22	1	2	0.03	15.71
MCS13	25.5	206	119.5	0	1	19	0.10	12.21
MCS14	21.5	177	19.5	6	1	1	0.01	4.80
MCS15	197.5	225	6.5	31.5	1	323	1.48	16.48
MCS16	34.5	194.5	0	25	1	11	0.06	6.60
MCS (M ± SD)	101.4 ± 67.2	212.3 ± 117.3	57.8 ± 70.3	33.7 ± 36
CC1	60	231	162.5	21	1	209	0.99	25.37
CC2	40	191.5	144	91.5	1	50	0.27	25.48
CC3	64.5	244.5	102	83	1	146	0.70	20.47
CC4	152	446.5	41	49.5	1	264	0.65	16.86
CC5	111	231	8.5	41	1	89	0.47	15.67
CC6	56.5	209	30.5	33	1	20	0.11	11.42
CC7	68.5	282.5	56	17	1	276	1.08	15.48
CC8	56	286	24.5	84	1	130	0.52	15.77
CC9	170.5	170.5	101	88.5	1	82	0.59	20.17
CC10	36.5	193.5	110.5	51	1	281	1.53	20.50
CC (M ± SD)	81.5 ± 46.8	248.6 ± 79.1	78 ± 53.2	56 ± 28.7

UWS unresponsive wakefulness syndrome, MCS minimally conscious state, CC clinical control, S1 sleep stage 1, S2 sleep stage 2, SWS slow-wave sleep, REM rapid eye movement sleep. Spindles present (defined by visual screening): 0, no; 1, yes. N spindles, the overall number of spindles; Density, sleep spindle density defined as the overall number of spindles divided by the duration of artifact-free S2 in minutes; Amplitude, the average amplitude of sleep spindles in μV

ISSN: 1741-7015