Alien Hand: Current Research Trends

Meritorious advances in recent years included proposed checklists for the component behaviors for diagnosing alien hand, structured interviews for querying the patients' experiences, and demonstrating white matter cerebral damage that extends far beyond the lesion boundaries that are identifiable on conventional structural brain MRI. This review summarizes the diversity of the presentations of alien hand. Many behaviors that are encompassed by alien hand are not so far explained by clinical or experimental brain MRI findings.