Table 3.

Mean Euler angle of rotation of subjects (N = 17) calculated as mean of all absolute Euler angles (Euler angle = arccos((cos(pitch)cos(roll) + cos(pitch)cos(yaw) + cos(roll)cos(yaw) + sin(pitch)sin(yaw)sin(roll) − 1)/2)).

Subject no.	Placebo	Ketamine
1	0.016	0.007
2	0.017	0.009
3	0.014	0.012
4	0.030	0.010
5	0.013	0.011
6	0.027	0.033
7	0.005	0.005
8	0.004	0.035
9	0.016	0.011
10	0.054	0.011
11	0.015	0.009
12	0.012	0.017
13	0.014	0.004
14	0.005	0.017
15	0.016	0.005
16	0.008	0.011
17	0.007	0.024
Average	0.016	0.014
Paired t-test	p-Value	0.526