Assessment of acute ischemic stroke brainwave using Relative Power Ratio

This paper examines the brainwave sub-band characteristics for three different group of stroke level based on the Relative Power Ratio (RPR) techniques. The EEG data sets have been collected from seventy four stroke patients with open eyes (OE) session. From these sessions, the sub-band RPR were calculated and further analysis is perform to determine the brainwave characteristics due to group stroke level. The results show that by implementing RPR technique, the pattern of group stroke level, especially in the cognitive or thinking abilities can be clearly observed. It can be concluded that the value for beta ratio is higher for Advance Group (AG) compare to Intermediate Group (IG) and Early Group (EG). In contrast alpha ratio for EG have higher value compared to AG and IG stroke level. This indicates that the PSD ratios can discriminate the characteristics of brainwaves for group stroke level assessment.