Table 9 Difficult emotional responses and the non-physical components of the Challenging Experience Questionnaire (CEQ).

From: Phenomenology and content of the inhaled N, N-dimethyltryptamine (N, N-DMT) experience

Coded units, themes, and questionnaire items

Documented in experience, n (%)

All experiences (n = 3778)

Experiences with no reported concomitant psychoactive substance use (n = 3242)

Difficult emotional responses

Time loop

31 (0.8)

22 (0.7)

Claustrophobia, feeling trapped, or feeling lost

17 (0.4)

15 (0.5)

Thoughts or mind racing

9 (0.2)

9 (0.3)

Suicidality

9 (0.2)

6 (0.2)

Challenging Experience Questionnaire (CEQ)

Fear

840 (22.2)

700 (21.6)

 Frightened

680 (18.0)

570 (17.6)

 Panic

252 (6.7)

211 (6.5)

 Experience of fear

693 (18.3)

580 (17.9)

 Anxious

468 (12.4)

383 (11.8)

 Had the feeling something horrible would happen

402 (10.6)

335 (10.3)

Grief

416 (11.0)

350 (10.8)

 Sad

60 (1.6)

45 (1.4)

 Feelings of grief

65 (1.7)

51 (1.6)

 Despair

140 (3.7)

117 (3.6)

 Feel like crying

42 (1.1)

30 (0.9)

 Feelings of despair

137 (3.6)

114 (3.5)

 Emotional and/or physical suffering

386 (10.2)

326 (10.1)

Insanity

107 (2.8)

87 (2.7)

 Fear that [the author] might lose [their] mind or go insane

69 (1.8)

56 (1.7)

 Change in sense of sanity

80 (2.1)

66 (2)

 Was afraid that the state would last forever

92 (2.4)

74 (2.3)

Isolation

45 (1.2)

35 (1.1)

 Felt isolated from everything and everyone

43 (1.1)

33 (1.0)

 Feel isolated from people and things

44 (1.2)

34 (1.0)

 Experience of Isolation and loneliness

44 (1.2)

34 (1.0)

Death

236 (6.2)

188 (5.8)

 Profound experience of own death

160 (4.2)

128 (3.9)

 Feel as if dead or dying

227 (6.0)

178 (5.5)

Paranoia

17 (0.4)

15 (0.5)

 Feeling that people were plotting against [the author]

9 (0.2)

7 (0.2)

 Experience of antagonism toward people around [the author]

11 (0.3)

10 (0.3)