Dr. Kaji’s research has focused on the pathophysiology, molecular genetics, and functional neuroanatomy of dystonia, especially Lubag dystonia. As an electromyographer, he has a keen interest in motor neuron disorder, and recently published a paper on a new gene causing amyotrophic lateral sclerosis (OPTN). Dr. Kaji has also published extensively on botulinum neurotoxin therapy of movement disorders and other conditions in leading biomedical journals.