Turbulent dynamics and in silico perturbation-based measures are disrupted across biological stages of Alzheimers disease

According to the AT(N) framework, Alzheimers disease (AD) can be biologically characterised by amyloid deposition, tau pathology, and neurodegeneration, yet how these processes relate to whole-brain dynamics remains unclear. Here, we investigated these relationships and the link between whole-brain dynamics and cognitive dysfunction using multimodal neuroimaging from 145 ADNI3 participants. We combined multiscale measures of turbulent dynamics with responses to in silico perturbations obtained from whole-brain models. AD progression was characterised by a scale-dependent reorganisation of turb

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