AMCI - Amnestic Mild Cognitive Impairment

To investigate the effect of trazodone on sleep, hippocampal-dependent memory and hippocampal excitability. The investigators hypothesize that trazodone will improve total sleep time and proportion of time in Slow Wave Sleep (SWS).

The aging population in Europe is leading to an increase in neurodegenerative diseases, such as Alzheimer's disease (AD), which is expected to affect 152 million people worldwide by 2050. In Italy, there are approximately 1.2 million cases of dementia, with 600,000 attributed to AD. Given the limited effectiveness of current pharmacological treatments, there is a growing need for early, non-pharmacological interventions to slow disease progression and improve the quality of life for patients and caregivers. The Neurocognitive Assessment Platform 4 Alzheimer (NAP4A) study aims to create a digital platform for the early detection of amnestic mild cognitive impairment (MCIa), considered an intermediate stage between normal aging and dementia. The platform uses non-invasive biometric tools, including EEG, blood flow sensors, and eye-tracking devices, to collect neurophysiological and behavioral data. The study will involve 100 participants aged 55 to 80, divided into two groups: one with individuals diagnosed with MCIa and a control group of healthy participants. Over 12 months, regular assessments will be conducted to identify markers that predict the progression from MCIa to AD. The goal is to develop advanced diagnostic tools that support early and targeted interventions.

The goal of this clinical trial is to learn if transcranial photobiomodulation (t-PBM), a light-based brain therapy, can help improve memory and cognitive skills in older adults with amnestic mild cognitive impairment (aMCI). This condition involves memory problems that are greater than normal aging and may increase the chance of developing Alzheimer's disease. The main questions this study aims to answer are: 1. Does t-PBM, when used together with cognitive training, improve memory and cognitive skills? 2. Does t-PBM change how certain brain areas communicate with each other, especially in the default mode network (DMN)? Researchers will compare: t-PBM plus cognitive training to sham (inactive) t-PBM plus the same cognitive training to see if the active light treatment leads to better cognitive improvement and healthier brain activity. Participants will: * Provide a blood sample so the research team can create a genetic profile; * Complete cognitive tests before and after the 4-week program; * Meet with a dietitian before and after the program so the research team can make sure diet stays consistent and does not influence brain results; * Have a brain fMRI scan before and after treatment to measure brain connectivity changes; * Take part in eight sessions of cognitive training; * Receive either active t-PBM or sham t-PBM during these sessions.