"Modern noninvasive neuromodulation began in the 1980s with transcranial magnetic stimulation (TMS). The first device was developed in the early 1980s and sold as the Magstim Model 200. It was a revolutionary, noninvasive method for stimulating the brain and treating depression."
"Back then, neuroimaging studies revealed that brain patterns in depression: reduced activity in the left dorsolateral prefrontal cortex (DLPFC) and disrupted communication between the prefrontal and limbic regions. George wondered whether psychiatric disorders reflected dysfunctional activity in specific circuits and whether targeted stimulation could restore circuits to health."
"Using repetitive TMS (rTMS), George's group applied high-frequency stimulation to the left DLPFC, demonstrating antidepressant effects. The result reframed TMS from a diagnostic probe into a therapeutic intervention. It also helped establish "circuit psychiatry"-the idea that mental disorders are also disorders of network dynamics."
"In 2014, the U.S. Food and Drug Administration cleared the electroauricular device (EAD) the NSS-2 Bridge Neurostimulation System, an early translation of the concept, for use in acupuncture. Authorization expanded in 2017 to suppo"
Modern psychiatry has often relied on medications that alter neurotransmitters such as serotonin, dopamine, and norepinephrine, aiming for downstream changes that rebalance mood or cravings. Neuromodulation instead targets the brain’s electrical activity within networks. Noninvasive neuromodulation began in the 1980s with transcranial magnetic stimulation (TMS), including early devices such as the Magstim Model 200 for depression. In the 1990s, neuroimaging findings in depression—reduced left dorsolateral prefrontal cortex activity and disrupted communication between prefrontal and limbic regions—supported the idea that targeted stimulation could restore circuit function. Repetitive TMS applied to the left DLPFC produced antidepressant effects and helped establish circuit psychiatry. In addiction medicine, regulatory clearance in 2014 enabled an electroauricular device for acupuncture, with later authorization expanding its use.
#neuromodulation #transcranial-magnetic-stimulation-tms #circuit-psychiatry #depression #addiction-medicine
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