Non-invasive technique shows promise but needs more study Oct 3, 2013 by Stephani Sutherland Electrical stimulation of the motor cortex was established as an effective treatment for pain 20 years ago, but the risks and drawbacks of surgically implanting electrodes in the brain keep many patients from pursuing this invasive treatment (Tsubokawa et al., 1991; Kurata, 1993; Nguyen et al., 2011). What if there was a safer, non-invasive way to deliver analgesic neurostimulation? T