Electronic brain implants and electromagnetic pulses work better for some people who suffer from psychiatic disorders than Electroconvulsivetherapy, psychopharmacotherapy or psychotherapy. These biomedical therapeutic tools include: Artificial Hippocampus; Deep Brain Stimulation (DBS); Vagus Nerve Stimulation (VNS); Magnetic Seizures Therapy; repetitive Transcranial Magnetic Stimulation (rTMS); and, transcranial Direct Current Stimulation (tDCS). In this communication, it is focused the use of rTMS, in the treatment of Depression, Parkinson's Disease/Negative Syndrome of Schizophrenia and Auditory Hallucinations within Positive Syndrome of Schizophrenia (PSS), and of tDCS, in the treatment of Depression and Dementia, and highlighted some neural networks implicated in these syndromes, which dysfunction is reverted through the use of those technological therapeutic tools. Also, it is presented mathematical models of: the (oscillatory) glutamatergic NMDA mediated neurotransmission system; and the Auditory Hallucinatory activity (within PSS). A nanodevice's project (sponsored by US Foresight Institute for Nanotechnology), for monitoring brain activity, at a subatomic level, during administration of rTMS and tDCS is also presented. NASA had elected DBS, VNS and rTMS, to be used in selected populations, due to their neuromodulator, neuroplastic and neuroprotector effects.