it has been shown that stimulating the Gamma band activities can lead to an enhanced cognitive status in dementia patients (Silva et al., 2015), improved working memory (Hoy et al., 2015), increased endogenous attention (Hopfinger et al., 2017) and also may reduce intracerebral Tau protein burden (Dhaynaut et al., 2020); all these studies have had small sample sizes similar to our study. This evidence concerns the gene MAPT and dementia.