TY - GEN
T1 - Effects of Subjective Visual Fatigue on Brain Function during Luminescent Sentence Reading Task
AU - Nishikawa, Tomohiro
AU - Watanuki, Keiichi
AU - Kaede, Kazunori
AU - Muramatsu, Keiichi
AU - Mashiko, Naoya
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - This study aims to examine the relationship between visual fatigue and brain function in the prefrontal cortex (PFC) during a luminescent sentence reading task. We conducted a 10 min luminescent sentence reading task in a dark room. Twelve healthy young volunteers participated in this study and performed six repeated experiments. The time-course of oxyhemoglobin (oxy-Hb) in the PFC was measured using a 22-channel wearable near-infrared spectroscope. Subjective visual fatigue and sleepiness were assessed using the ' Jikaku-sho shirabe' questionnaire. In addition, the critical flicker-fusion frequency (CFF) was measured as the objective index of fatigue. CFF could be used as the objective support for sleepiness, because Delta CFF and the feeling of drowsiness, Delta text{I}, were negatively correlated ({r}=-0.24, {p}<0.05). In our analysis, oxy-Hb in the medial PFC (mPFC) exhibited a significant negative correlation with the feeling of eyestrain, Delta text{V}({r}=-0.37, {p}<0.01), but not with other fatigue indexes. It was suggested that the development of subjective visual fatigue is related to the deactivation conditions in the mPFC. This study played an important role as the control for the evaluation of objective visual fatigue during various colored LED luminescent sentence reading tasks.
AB - This study aims to examine the relationship between visual fatigue and brain function in the prefrontal cortex (PFC) during a luminescent sentence reading task. We conducted a 10 min luminescent sentence reading task in a dark room. Twelve healthy young volunteers participated in this study and performed six repeated experiments. The time-course of oxyhemoglobin (oxy-Hb) in the PFC was measured using a 22-channel wearable near-infrared spectroscope. Subjective visual fatigue and sleepiness were assessed using the ' Jikaku-sho shirabe' questionnaire. In addition, the critical flicker-fusion frequency (CFF) was measured as the objective index of fatigue. CFF could be used as the objective support for sleepiness, because Delta CFF and the feeling of drowsiness, Delta text{I}, were negatively correlated ({r}=-0.24, {p}<0.05). In our analysis, oxy-Hb in the medial PFC (mPFC) exhibited a significant negative correlation with the feeling of eyestrain, Delta text{V}({r}=-0.37, {p}<0.01), but not with other fatigue indexes. It was suggested that the development of subjective visual fatigue is related to the deactivation conditions in the mPFC. This study played an important role as the control for the evaluation of objective visual fatigue during various colored LED luminescent sentence reading tasks.
UR - http://www.scopus.com/inward/record.url?scp=85082573335&partnerID=8YFLogxK
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U2 - 10.1109/SII46433.2020.9026251
DO - 10.1109/SII46433.2020.9026251
M3 - Conference contribution
AN - SCOPUS:85082573335
T3 - Proceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020
SP - 390
EP - 394
BT - Proceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE/SICE International Symposium on System Integration, SII 2020
Y2 - 12 January 2020 through 15 January 2020
ER -