Exploration of Differences in Metabolite Concentrations by NMR Spectroscopy in the Ventral Striatum, Anterior Cingulate Cortex and Prefrontal Cortex in Euthymic Patients With Unipolar and Bipolar Type II Mood Disorders, as Well as in Healthy Subjects

"The MRI protocol will be carried out at 3 Tesla (3T) on a Siemens NMR imaging system (Magnetom Vida, Siemens Healthcare, Erlangen, Germany), the emission of radiofrequency waves and the reception of the signal will be done using a resonator in quadrature head (64-channel phase-array antenna). The MRI protocol will take place in two phases:~* Realization of a morphological sequence for the identification of the zone of interest.~* Acquisition of a 1D NMR spectrum in the ventral striatum (right and left).~* Acquisition of a 1D NMR spectrum in the anterior cingulate cortex (right and left).~* Acquisition of a 1D NMR spectrum in the prefrontal cortex (right and left)."