Premonitory Urge in Tourette Syndrome

The premonitory urge is the sensory phenomenon that precedes a tic — described by patients as a building tension, an itch, a pressure, or an electrical sensation that is only relieved by performing the tic. It is the most treatment-relevant feature of Tourette syndrome because it provides a window of opportunity for intervention.

InhibiTic is built on the premonitory urge. The device's 8-channel EEG system monitors brain activity in real time, and a personally trained classifier detects the unique brainwave signature that appears in the 500–1000 ms window before tic onset. By intervening at the moment of the urge, the device stops the tic before it starts — without affecting anything else.

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