There were 20 adult volunteers (16 male, 4 female) all but 1 naive to the experimental hypothesis. Fifteen reported more than 10 minutes prior experience with virtual environments. General data about participants are given in Table 4.2.
| Id | Gn | Age | Prev |
| 1 | M | 41 | 1 |
| 2 | M | 29 | 0 |
| 3 | M | 43 | 1 |
| 4 | M | 42 | 1 |
| 5 | M | 26 | 1 |
| 6 | M | 36 | 1 |
| 7 | M | 29 | 1 |
| 8 | F | 40 | 1 |
| 9 | M | 27 | 1 |
| 10 | M | 34 | 1 |
| 11 | F | 43 | 0 |
| 12 | M | 25 | 1 |
| 13 | M | 36 | 0 |
| 14 | M | 21 | 0 |
| 15 | F | 27 | 1 |
| 16 | M | 27 | 0 |
| 17 | M | 27 | 1 |
| 18 | F | 38 | 1 |
| 19 | M | 53 | 1 |
| 20 | M | 48 | 1 |
Id is the participant number. Gn gives the gender, Age the age in years, and Prev is ``1'' if the participant had more than 10 minutes of prior experience in virtual environments, ``0'' otherwise.
For general methods, including the image used and how the per-exposure presence ratings were taken, see Section 4.2. Participants were given a one-minute pre-exposure to each condition, in random order, during which they were asked to examine the scene and gather their impressions. Subsequently, per-exposure presence ratings were taken for each condition in an independent random order.
Three FOV conditions were compared: 16
, 32, and
48 (the widest available on the HMD used). FOV was restricted by
blacking pixels around the boundary of the display (by the same proportion
vertically as horizontally).