نتایج جستجو برای: vestibulo
تعداد نتایج: 2374 فیلتر نتایج به سال:
We present an eye/head gaze controller based on recent findings in biological gaze control. Despite the absence of an explicit VOR mechanism the model is able to (i) produce classical VOR responses and (ii) reject head perturbations during the saccadic portion of a gaze shift executed to a remembered target -what is usually attributed to a separate vestibular mechanism. We argue that distinguis...
The mammalian orienting response to sounds consists of a gaze shift that can be a combination of head and eye movements. In animals with mobile pinnae, the ears also move. During head movements, vision is stabilized by compensatory rotations of the eyeball within the head because of the vestibulo-ocular reflex (VOR). While studying the gaze shifts made by cats to sounds, a previously uncharacte...
Cervical nystagmus due to loss of cerebellar inhibition on the cervico-ocular reflex: a case report.
Studies of the cervico-ocular reflex and the vestibulo-ocular reflex have been carried out separately and in combination on a patient with gait ataxia due to a cerebellar tumour. With the head fixed in space, body rotation to the right (left neck torsion) induced marked nystagmus to the left in darkness. Vestibulo-ocular responses to sinusoidal rotation were symmetrical while the neck was immob...
level, pupil reaction, and corneal reflex. However, there were many discrepancies in individual patients so that the vestibulo-ocular reflex afforded useful information additional to that obtained from traditional tests. Bilateral abnormal motor activity or absent pupil reactions were often associated with relatively unimpaired vestibulo-ocular reflex responses. There was no correlation between...
An orthologue of the mouse homeobox gene Nkx5-1 was cloned and characterized in the zebrafish. As in the mouse and chick, the zebrafish Nkx5-1 gene is expressed in the ear placode and vesicle and in cells forming the vestibulo-acoustic ganglion. In addition, a novel expression domain, the lateral line, appears in the zebrafish, supporting a common precursor hypothesis for these two organs. In t...
Our visual system has many interesting abilities like vestibulo-ocular reflex. These abilities are helpful for us to perceive the environment effectively and often have adaptability to the environment. On the other way, LSSI (Local Sensory Signals Integration) learning base on the smoothness of the relation between the spatial and temporal information, has been already proposed. In this paper, ...
level, pupil reaction, and corneal reflex. However, there were many discrepancies in individual patients so that the vestibulo-ocular reflex afforded useful information additional to that obtained from traditional tests. Bilateral abnormal motor activity or absent pupil reactions were often associated with relatively unimpaired vestibulo-ocular reflex responses. There was no correlation between...
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