Table 1. Unpleasantness of remifentanil effects (experiment 2).

Subject	Paradigm „rest“		Paradigm „move“
	Nausea scale	Most unpleasant opioid effect	Nausea scale	Most unpleasant opioid effect
1	0	Fixating difficulties	0	Swallowing difficulties
2	0	Slow breathing	8	Nausea
3	0	Feeling heavy	0	Itching
4	0	Itching	7	Nausea
5	0	Itching	0	Itching
6	0	Fixating difficulties	4	Nausea
7	0	Swallowing difficulties	4	Nausea
8	0	Feeling heavy	6	Nausea
9	0	Itching	4	Nausea
10	1	Swallowing difficulties	10	Nausea