TY - GEN
T1 - Evaluation of adaptation to visually induced motion sickness by using physiological index associated with baroreflex function
AU - Sugita, Norihiro
AU - Yoshizawa, Makoto
AU - Abe, Makoto
AU - Tanaka, Akira
AU - Chiba, Shigeru
AU - Yambe, Tomoyuki
AU - Nitta, Shin Ichi
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Visual images including intensive motions and the experience of virtual reality sometimes induce visually-indeuced motion sickness (VIMS). There are few studies that have objectively evaluated the effects of repetitive exposures to these stimuli on humans. In this study, an experiment was carried out in which the same video image was presented to human subjects three times. We evaluated changes of the intensity of VIMS they suffered from with a subjective score and a physiological index, ρmax, which is defined as the maximum cross-correlation coefficient between heart rate and pulse wave transmission time and is considered to reflect baroreflex function. The results showed that the adaptation to VIMS could be represented by a decrease in the objective index ρmax as well as the subjective score. On the contrary, however, some subjects' ρmax increased in a few similar time regions at every trial. This fact suggests that we can specify the part of the video image which is closely related to VIMS by analyzing the change ρmax with time.
AB - Visual images including intensive motions and the experience of virtual reality sometimes induce visually-indeuced motion sickness (VIMS). There are few studies that have objectively evaluated the effects of repetitive exposures to these stimuli on humans. In this study, an experiment was carried out in which the same video image was presented to human subjects three times. We evaluated changes of the intensity of VIMS they suffered from with a subjective score and a physiological index, ρmax, which is defined as the maximum cross-correlation coefficient between heart rate and pulse wave transmission time and is considered to reflect baroreflex function. The results showed that the adaptation to VIMS could be represented by a decrease in the objective index ρmax as well as the subjective score. On the contrary, however, some subjects' ρmax increased in a few similar time regions at every trial. This fact suggests that we can specify the part of the video image which is closely related to VIMS by analyzing the change ρmax with time.
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U2 - 10.1109/IEMBS.2007.4352284
DO - 10.1109/IEMBS.2007.4352284
M3 - Conference contribution
C2 - 18001950
AN - SCOPUS:57649196075
SN - 1424407885
SN - 9781424407880
T3 - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
SP - 303
EP - 306
BT - 29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
T2 - 29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
Y2 - 23 August 2007 through 26 August 2007
ER -