 This study proposes a novel audiovisual brain computer interface, BCI, system to evaluate sound localization in patients with disorders of consciousness, DOC. The system uses electroencephalogram e.g. signals to detect event-related potentials, ERPs, associated with the target button being selected by the patient. Patients who show ERPs associated with the target button are considered to have sound localization ability. This method was tested on 18 patients with DOC, and 11 out of 18 patients demonstrated sound localization ability using the BCI system. Three of these patients also improved their performance in the second CRSR assessment after the BCI experiment. These results suggest that the BCI system could be used to assist the assessment of sound localization and improve the clinical diagnosis of DOC patients. This article was authored by Jun Xiao, Yan Bin He, Tian Yu Yu, and others. We are article.tv, links in the description below.