Dysphagia is a frequent complication in patients with brain injury, which can lead to aspiration pneumonia and thus prolonged hospitalization or even death. It is essential therefore, to detect and assess dysphagia early for best patient care. Fiberoptic endoscopic (FEES) and Videofluoroscopy (VFS) evaluation of swallowing are the gold standard exams in swallowing studies but neither are perfectly suitable for patients with disorders of consciousness (DOC). In this study, we aimed to objectivize the sensitivity and specificity of the Nox-T3TM sleep monitor and validate its use for investigating neurological swallowing disorders. Nox-T3 provides time-coordinated patterns of muscular and respiratory activity and a combination of submental and peri-laryngeal surface electromyography, nasal cannulas and respiratory inductance plethysmography belts connected to Nox-T3 allows recording swallowing events and their coordination with breathing. We compared Nox-T3 swallowing capture to manual swallowing detection on fourteen DOC patients. The Nox-T3 method identified swallow events with a sensitivity of 95% and a specificity of 99%. In comparison, FEES and VFS have a sensitivity of 0.7 to 1 and a specificity of 0.5 to 0.97, respectively. In addition, Nox-T3 has qualitative contributions, such as visualization of the swallowing apnea in the respiratory cycle. These results suggest that Nox-T3 could be used for swallowing evaluation in DOC patients and support its continued clinical use for swallowing disorder investigation.