Congenital facial weakness is present in a heterogeneous group of conditions. Among them is Moebius syndrome, which has been defined as a disorder with congenital, non-progressive facial weakness and limited abduction of one or both eyes. It is typically attributed to agenesis of the abducens and facial cranial nerves. This paper details ocular motor findings of 40 subjects (23 months to 64 yea...

BACKGROUND Vestibular and ocular motor impairments and symptoms have been documented in patients with sport-related concussions. However, there is no current brief clinical screen to assess and monitor these issues. PURPOSE To describe and provide initial data for the internal consistency and validity of a brief clinical screening tool for vestibular and ocular motor impairments and symptoms ...

Wavelet decomposition of ocular motor signals was investigated with a view to its use for noise analysis and filtering. Ocular motor noise may be physiological, depending on brain activities, or experimental, depending on the eye recording machine, head movements and blinks. Experimental noise, such as spikes, must be removed, preserving noise due to neuro-physiological activities. The proposed...

BACKGROUND Self-generated body movements require compensatory eye and head adjustments in order to avoid perturbation of visual information processing. Retinal image stabilization is traditionally ascribed to the transformation of visuovestibular signals into appropriate extraocular motor commands for compensatory ocular movements. During locomotion, however, intrinsic "efference copies" of the...

Measurement of eye movements often helps to diagnose ocular motor disorders in the clinic, and is also used as a research tool in ocular motor, vision and vestibular research. Eye movements, however, are usually recorded without simultaneous video recordings, making offline interpretation difficult. We developed a tool that converts the measured eye movement data into a three-dimensional (3D) m...

BACKGROUND Neurological disturbances are common problems in children with Down Syndrome (DS). AIM To determine the prevalence of neurological disorders affecting children with Down Syndrome. PATIENTS AND METHODS Review of medical records of 253 children aged from 1 day to 23 years affected with DS, attended at a public hospital and a University clinic. RESULTS The overall prevalence of ne...

DELL'OSSO, L. F., and R. B. DARoFF. Functional organization of the ocular motor system. Aerospace Med. 45(8) : 873-875, 1974. Various stimuli, other than a moving target, have evoked slow eye movements improperly designated "pursuit." Attempts at ex­ plaining these eye movements have provoked convoluted hypo­ theses. This confusion can be alleviated by conceptualization of the ocular motor cont...

OBJECTIVE To investigate the changes of predictive ocular motor function in the patients with Parkinson's disease (PD), and to discuss its clinical value. METHODS Videonystagmography (VNG) was used to examine 24 patients with idiopathic Parkinson's disease, 15 males and 9 females, aged 61 +/- 6 (50-69), and 24 sex and age-matched healthy control subjects on random ocular saccade (with the tar...