The Cluster 3 focused on the mechanisms of PSN and oxidative stress pathways, with the prevalent keyword being “stroke,” “expression,” “focal cerebral-ischemia,” “activation,” “oxidative stress,” “tumor-necrosis-factor,” and “mechanisms.” The keywords were color-coded into different types per the average year of publication (APY) utilizing the VOSviewer (Figure 7B). Here, TNF is linked to Stroke.