Table 5.

Complexity and modality of experiences in reports from anaesthetic-induced unresponsiveness (Experiment 1) and non-rapid eye movement (NREM) sleep (Experiment 2). ∗Negative emotions were more often present during anaesthetic-induced unresponsiveness than during NREM sleep in reports that included dreaming (N=56, F(1, 54)=4.438, P=0.040). ∗∗Kinaesthetic/vestibular sensations (N=83, F(1, 81)=5.796, P=0.018) were more often experienced during anaesthetic-induced unresponsiveness than during NREM sleep in reports that included memory incorporation.

	Dreaming		Memory incorporation
	Anaesthesia, N of reports that include dreaming = 33	Sleep, N of reports that include dreaming = 24	Anaesthesia, N of reports that include memory incorporation = 47	Sleep, N of reports that include memory incorporation = 37
	N of reports that include specific content (%)		N of reports that include specific content (%)
Complexity
No perceptual content	3 (9.1)	0 (0)	3 (6.4)	0 (0)
Static report	9 (27.3)	15 (62.5)	37 (78.7)	37 (100)
Dynamic report	21 (63.6)	9 (37.5)	7 (14.9)	0 (0)
Modality
Sensory–perceptual
Visual	30 (90.1)	20 (83.3)	5 (10.6)	7 (18.9)
Auditory	15 (45.5)	10 (41.7)	37 (78.7)	29 (78.4)
Gustatory	1 (3.0)	0 (0)	0 (0)	0 (0)
Olfactory	0 (0)	0 (0)	0 (0)	0 (0)
Interoceptive	2 (6.0)	0 (0)	2 (4.3)	2 (5.4)
Kinaesthetic/vestibular	13 (39.4)	6 (25.0)	17 (36.2)∗∗	5 (13.5)∗∗
Tactile	1 (3.0)	0 (0)	14 (29.8)	14 (37.8)
Nociceptive and thermoceptive	1 (3.0)	0 (0)	7 (14.9)	6 (16.2)
Affective states
Positive	13 (39.4)	7 (29.2)	5 (10.6)	2 (5.4)
Negative	11 (33.3)∗	1 (4.2)∗	3 (6.4)	0 (0)
Cognition	15 (45.5)	6 (25.0)	12 (25.5)	6 (16.2)
Out-of-body experience	0 (0)	0 (0)	0 (0)	0 (0)
Sense of presence	2 (6.0)	0 (0)	8 (17.0)	1 (2.7)