In December 2008, Neurotronics Inc was acquired by Japanese firm Nihon Kohden Corporation. Neurotronics Inc offer the PolysmithTM Sleep Analysis Program - a powerful tool for use in the diagnosis and study of sleep disorders. Based on the WindowsTM operating systems, Polysmith is the ideal solution for laboratories dedicated to sleep studies, multi disciplinary laboratories also performing EEG, and laboratories extending PSG testing to in-home studies. Over 30 years of published clinical research has gone into the development of Polysmith and has helped to create some of the most advanced algorithms.