Journal of Engineering and Applied Sciences

Year: 2017
Volume: 12
Issue: 1 SI
Page No. 5726 - 5730

A Study of Evaluation Method on Image Recall Capacity using EEG

Authors : Ssang-Hee Seo

Abstract: The purpose of this study is to evaluate individual recall capacity. To this end, recall capacity of individual was evaluated to the changes of EEG when they recall about that images after watching the images. The 27 healthy college students (male 16, female 11) were selected. Before participating in the experiment, they prepared a consent form. Their brain waves were subsequently measured. The subjects all consisted of persons who were right-handed and without brain-related diseases. EEG data measured at the occipital and frontal lobe. Beta (13~30 Hz) band and theta (4~8 Hz) band were abstracted through analyzing the relative power spectrum. Classification was made between the individuals who are good and not good at recalling images. The result showed that the relative beta power of the occipital lobe was low when they recall the images compared to watch the images. This result showed similar results in the relative theta power in the frontal lobe. However, quiz score and variation in beta power at the occipital lobe indicates a high correlation. It means that the higher the quiz score, the greater the change of relative beta power in recall state. But the variation of theta power at the frontal lobe did not produce significant results. We divided into three groups to identify recall capacity of individual based on discriminating factors. We calculated the mean value of difference between beta power in stable state and beta power in recall state. The highest group of mean value of difference showed the highest quiz score at the occipital lobe. The difference between the three groups was very large. These results showed that those who have a high recall capacity show high beta power difference in recall state at the occipital lobe. This suggests that recall capacity has connection to a beta power variation at the occipital lobe and that there exists an individual difference in recall capacity. Beta power at the occipital lobe can be used as an indicator of individual recall capacity.

How to cite this article:

Ssang-Hee Seo , 2017. A Study of Evaluation Method on Image Recall Capacity using EEG. Journal of Engineering and Applied Sciences, 12: 5726-5730.

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