Method for assessing the susceptibility of a human individual suffering from a psychiatric or neurological disorder, in particular with depressed mood as a predominant feature, to neuromodulation treatment, in particular repetitive Transcranial Magnetic Stimulation (rTMS), the method comprising: a) Providing a dataset comprising electroencephalographic (EEG) activity and Event Related Potentials (ERP) data of said human individual; b) Assessing the susceptibility of said human individual to neuromodulation treatment based on said dataset.