vagus nerve stimulation Vagus nerve stimulation therapy is a treatment for epilepsy that involves a stimulator (or 'pulse generator') which is connected, inside the body, to the left vagus nerve in the neck.
Tuva (Russian: ÑÑÐ²Ð°Ì tyh-VAH) or 'Tyva' is a republic in Eastern Siberia, bordering the Altai Republic to the west, Khakassia to the northwest, Krasnoyarsk Krai to the north, Irkutsk Oblast to the northeast, Buryatia to the east, and Mongolia to the south.
Sources are rare and unclear for most of Tuva's early history. Archeological evidence indicates a Scythian presence possibly as early as the 9th century BC. Tuva was conquered relatively easily by the succession of empires which swept across the region. It was most likely held by various Turkic khanates until 1207.