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 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).