We intend to test in a randomized, rater blinded, placebo controlled, prospective study the primary hypothesis that an escitalopram-rTMS-combination treatment is more efficacious in the treatment of refractory major depression assessed with the Hamilton Depression Rating Scale compared to placebo.
A second hypothesis is that the treatment of MDE with escitalopram (that means in the "Placebo group") alone lead to typical changes like
* An increase in neurotrophic factors concentration (measured by blood concentrations of nerve growth factor (NGF) and brain derived nerve growth factor (BDNF),
* An increase in hippocampal metabolites (measured with magnetic resonance spectroscopy (MRS
* An increase in motor cortical inhibitory activity (measured with motor evoked potentials (MEP
* An increase in serotonergic activity (measured with EEG parameters, Moreover, it is hypothesized that similar but pronounced changes occur in the group treated with the combination treatment.