DOCTORAATSPROEFSCHRIFT - EDM - UHasselt

viii CONTENTS
15.1.2 A Haptic Component for ExtReAM . . . . . . . . . . . 136
15.2 Enabling Physical Travel . . . . . . . . . . . . . . . . . . . . . . 138
15.2.1 Motion Control . . . . . . . . . . . . . . . . . . . . . . . 138
15.2.2 Generating Travel Force Feedback . . . . . . . . . . . . 140
15.2.3 Force Feedback Issues . . . . . . . . . . . . . . . . . . . 142
16 Evaluating the Effects of Haptics on Presence while Traveling145
16.1 The Haptic Travel Experiment . . . . . . . . . . . . . . . . . . 146
16.1.1 Virtual Environment Setup . . . . . . . . . . . . . . . . 146
16.1.2 Task Description . . . . . . . . . . . . . . . . . . . . . . 147
16.1.3 Experimental Procedure . . . . . . . . . . . . . . . . . . 148
16.1.4 Hypotheses . . . . . . . . . . . . . . . . . . . . . . . . . 149
16.2 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . 150
16.2.1 Trial Completion Time . . . . . . . . . . . . . . . . . . . 150
16.2.2 Workload . . . . . . . . . . . . . . . . . . . . . . . . . . 152
16.2.3 Perceived Presence and Performance . . . . . . . . . . . 153
17 Conclusions 157
V CONCLUSIONS AND FUTURE RESEARCH 159
General Conclusions and Directions for Further Research 161
General Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Directions for Further Research . . . . . . . . . . . . . . . . . . . . . 163
APPENDICES 167
A Publications 167
B Dutch Summary - Samenvatting 169
C Interactive Object Examples 171
C.1 Interactive Door Object . . . . . . . . . . . . . . . . . . . . . . 171
C.2 Physical Interactive Door Object . . . . . . . . . . . . . . . . . 174
REFERENCES 177