MAPT and Lewy body dementia: Moreover, LBs were more abundant in deep than superficial cortical layers (PD: P = 0.004; PDD/DLB: P = 0.035), while p-tau and Aβ were more abundant in superficial than deep cortical layers in PDD/DLB (p-tau: P = 0.046; Aβ: P < 0.001).