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Computational Intelligence and Neuroscience
Volume 2016 (2016), Article ID 4292145, 13 pages
Research Article

Herbal Extracts That Reduce Ocular Oxidative Stress May Enhance Attentive Performance in Humans

1School of Information and Communications, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
2Department of Dermatology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea
3Department of Ophthalmology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea

Received 26 July 2016; Revised 31 October 2016; Accepted 21 November 2016

Academic Editor: Justin Dauwels

Copyright © 2016 Hohyun Cho et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We used herbal extracts in this study to investigate the effects of blue-light-induced oxidative stress on subjects’ attentive performance, which is also associated with work performance. We employed an attention network test (ANT) to measure the subjects’ work performance indirectly and used herbal extracts to reduce ocular oxidative stress. Thirty-two subjects participated in either an experimental group (wearing glasses containing herbal extracts) or a control group (wearing glasses without herbal extracts). During the ANT experiment, we collected electroencephalography (EEG) and electrooculography (EOG) data and measured button responses. In addition, electrocardiogram (ECG) data were collected before and after the experiments. The EOG results showed that the experimental group exhibited a reduced number of eye blinks per second during the experiment and faster button responses with a smaller variation than did the control group; this group also showed relatively more sustained tension in their ECG results. In the EEG analysis, the experimental group had significantly greater cognitive processing, with larger P300 and parietal 2–6 Hz activity, an orienting effect with neural processing of frontal area, high beta activity in the occipital area, and an alpha and beta recovery process after the button response. We concluded that reducing blue-light-induced oxidative stress with herbal extracts may be associated with reducing the number of eye blinks and enhancing attentive performance.