Our studies on MRI (Magnetic resonance imaging) biomarkers in neuropsychiatric disorders rely on reference data from control subjects which are dependent from our scanner. Due to the upcoming replacement of our MR scanner, the investigators need to 'recalibrate' our current database by acquiring the same data on both the old and the new device from a small group of controls (n = 36 to 40). This will be combined with measures of cortical excitability using robotized TMS (transcranial magnetic stimulation) that will be combined to MRI biomarkers in forthcoming studies. Therefore, the primary objective of this biomedical trial is to collect MRI and physiological measurements in normal subjects whose characteristics match to our study populations.
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Recalibration of MRI database
Timeframe: From enrollment to the end of participation at 39.5 months maximum
Physiological parameters
Timeframe: From enrollment to the end of participation at 39.5 months maximum