Memory Deterioration in Alzheimer Disease

This study is examining how memory deteriorates in people with Alzheimer's disease (AD) or mild cognitive impairment (MCI) using advanced brain imaging (7T MRI) and electrical brain activity measurements (EEG). The goal is to better understand the biology behind memory loss in these conditions. **You may be eligible if...** - You are over 55 years old - You have a confirmed diagnosis of Alzheimer's disease or mild cognitive impairment (MCI) based on current diagnostic criteria - You are a native Norwegian speaker - You live at home (not in a care facility) **You may NOT be eligible if...** - You have severe cognitive impairment (CDR score above 2) - You have a brain tumor or history of brain surgery - You have had a significant head injury - You have any condition that prevents you from safely undergoing MRI or EEG (e.g., metal implants) Talk to your doctor to see if this trial is right for you.