Related Experiment Video
Updated: Dec 31, 2025

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
Published on: August 22, 2025
Torticollis in children with enlarged vestibular aqueducts
Jacob R Brodsky1, Karampreet Kaur2, Talia Shoshany2
1Boston Children's Hospital, 300 Longwood Avenue, Boston, MA, 02115, USA; Harvard Medical School, 243 Charles Street, Boston, MA, 02114, USA.
Objectives:
To evaluate the association between torticollis and enlarged vestibular aqueduct (EVA).
Methods:
An online/phone survey was administered to parents of 133 children diagnosed with the following disorders: EVA, GJB2 (Connexin 26) mutations associated congenital hearing loss and epistaxis (control). The survey included questions regarding symptoms of torticollis, vertigo, and hearing loss.
Results:
Patients with EVA had a 10-fold greater odds of having torticollis than controls (31% vs. 4%; OR = 10.6; 95% CI: 2.9, 39.2). No patients with GJB2 had a reported history of torticollis. Torticollis preceded the diagnosis of hearing loss in most (87%) patients with EVA who had a reported history of torticollis. EVA patients were more likely to have reported motor delay than controls (40% vs. 15%; p = 0.002). EVA patients with prior torticollis (80%; 12/15) were more likely to have balance impairment than EVA patients without prior torticollis (12%; 4/33; p < 0.001). Twelve patients had a reported history of paroxysmal torticollis, all of whom had EVA.
Conclusion:
Torticollis in infants may be a marker of EVA. Infants with torticollis should be monitored closely for hearing loss and motor delay, especially when the torticollis is paroxysmal.
Related Concept Videos
The Vestibular System
Equilibrium and Balance
Articulations of the Vertebral Column
Muscles that Move the Head
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
Anatomy of the Ear
Cranial Bones: Superior and Posterior View
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...

