As the MTL is known to exhibit elevated levels of tau protein deposition (Harrison et al., 2019; Marks et al., 2017) and age-related neuronal loss (Jack et al., 1998; Raz et al., 2004), particularly in patients with beginning cognitive decline (Braak & Del Tredici, 2015; Fjell et al., 2010), deficits in time perception might potentially serve as behavioural marker for pre-clinical stages of dementia (El Haj & Kapogiannis, 2016; Maaß et al., 2019). The gene discussed is MAPT; the disease is Mental deterioration.