| Paper Abstract and Keywords |
| Presentation |
2015-03-10 14:30
Quantitative assessments of arousal level by analyzing fixation eye movements and pupil fluctuations
Shogo Honda, Takeshi Kohama, Hisashi Yoshida (Kinki Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Previous studies have shown that microsaccade (MS) rates increase and pupil diameters continuously constrict antecedent to the occurrence of slow eye movements (SEMs). Since SEMs occur in connection with the depression of arousal, fixation eye movements and pupil fluctuations are candidate indicators to monitor arousal states. However, SEM detection methods of these studies are not sufficiently accurate. In this study, we propose a new SEM detection method to extract SEMs as sections and analyze MS rates and pupil fluctuations before the starting poing of each SEM section. The results clearly show that gradual rise of MS rate and longitudinal miosis are observed prior to the initiation of SEMs, and these properties become more distinctive when they are restricted to primal SEMs. Moreover, we performed similar experiment using more precise equipment and the results show that periodical MS rate heave associated with nystagmus appears approximately two minutes prior to SEMs. This indicates that these profiles might be able to be used to estimate arousal states quantitatively. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Arousal level / SEM / Microsaccade / Pupil fluctuation / Time frequency analysis / / / |
| Reference Info. |
ITE Tech. Rep., vol. 39, no. 11, HI2015-51, pp. 25-28, March 2015. |
| Paper # |
HI2015-51 |
| Date of Issue |
2015-03-03 (HI) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
HI |
| Conference Date |
2015-03-10 - 2015-03-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tokyo University of Agriculture and Technology |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
HI |
| Conference Code |
2015-03-HI |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Quantitative assessments of arousal level by analyzing fixation eye movements and pupil fluctuations |
| Sub Title (in English) |
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| Keyword(1) |
Arousal level |
| Keyword(2) |
SEM |
| Keyword(3) |
Microsaccade |
| Keyword(4) |
Pupil fluctuation |
| Keyword(5) |
Time frequency analysis |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Shogo Honda |
| 1st Author's Affiliation |
Kinki University (Kinki Univ.) |
| 2nd Author's Name |
Takeshi Kohama |
| 2nd Author's Affiliation |
Kinki University (Kinki Univ.) |
| 3rd Author's Name |
Hisashi Yoshida |
| 3rd Author's Affiliation |
Kinki University (Kinki Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2015-03-10 14:30:00 |
| Presentation Time |
25 minutes |
| Registration for |
HI |
| Paper # |
HI2015-51 |
| Volume (vol) |
vol.39 |
| Number (no) |
no.11 |
| Page |
pp.25-28 |
| #Pages |
4 |
| Date of Issue |
2015-03-03 (HI) |