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Clinical presentation, diagnostic investigations and follow-up of a Bengal tiger ( affected by ambulatory tetraparesis.
Braz J Vet Med
January 2025
Veterinarian, Neurology Department, AniCura Istituto Veterinario di Novara, Granozzo con Monticello, Novara, Italy.
An 11-year-old male Bengal tiger () was referred for a 2-week history of ambulatory tetraparesis, generalized ataxia, and hypermetric gait, associated with mild right head tilt and spontaneous proprioceptive deficit on the right forelimb. Neuroanatomical localization was C1-C5 myelopathy; cerebellum-vestibular system involvement was also considered. Hematology and serum biochemistry were unremarkable, although serum vitamin A (0.
View Article and Find Full Text PDFSelective otolithic dysfunction in patients presenting with acute spontaneous vertigo: consideration based on MRI.
Front Neurol
December 2024
Dizziness Center, Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
Objective: Acute unilateral peripheral vestibulopathy or vestibular neuritis (AUPV/VN) manifests as acute onset vertigo, often accompanied by nausea, vomiting, and moderate gait instability. It is suspected when vestibular hypofunction is documented on video-head impulse (video-HITs) and caloric tests in the presence of contralesionally beating horizontal-torsional nystagmus. Herein, we report patients presenting with acute vestibular syndrome (AVS) showing selective otolithic dysfunction in the presence of normal caloric and video-HITs and abnormal enhancement of the peripheral vestibular structures on MRI.
View Article and Find Full Text PDFObjective: To assess if patients with enlarged vestibular aqueduct (EVA) experience symptoms characteristic of other third mobile window disorders such as superior semicircular canal dehiscence syndrome (SCDS).
Study Design: Cross-sectional study.
Setting: Tertiary care center.
Toward the Bayesian brain: a generative model of information transmission by vestibular sensory neurons.
Front Neurol
December 2024
Department of Head and Neck Surgery and Brain Research Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.
The relative accessibility and simplicity of vestibular sensing and vestibular-driven control of head and eye movements has made the vestibular system an attractive subject to experimenters and theoreticians interested in developing realistic quantitative models of how brains gather and interpret sense data and use it to guide behavior. Head stabilization and eye counter-rotation driven by vestibular sensory input in response to rotational perturbations represent natural, ecologically important behaviors that can be reproduced in the laboratory and analyzed using relatively simple mathematical models. Models drawn from dynamical systems and control theory have previously been used to analyze the behavior of vestibular sensory neurons.
View Article and Find Full Text PDFFloor of the Mouth Hemorrhage Following Dental Implant Placement or Guided Bone Regeneration (GBR) in the Atrophic Interforaminal Mandible.
Case Rep Dent
December 2024
Department of Maxillofacial Surgery, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Bergamo, Italy.
The authors present two cases of mouth floor hemorrhage consequences of implant placement within the atrophic anterior mandible. In one patient, the implant placement was associated with the guided bone regeneration (GBR) technique. This serious complication has been widely described in the literature, especially in the anterior mandible area.
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