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        The Impact of Optical Illusions on the Vestibular System

        Öztürk Şeyma Tuğba,Şerbetçioğlu Mustafa Bülent,Ersin Kerem,Yılmaz Oğuz 대한청각학회 2021 Journal of Audiology & Otology Vol.25 No.3

        Background and Objectives: Balance control is maintained in stationary and dynamic conditions, with coordinated muscle responses generated by somatosensory, vestibular, and visual inputs. This study aimed to investigate how the vestibular system is affected in the presence of an optical illusion to better understand the interconnected pathways of the visual and vestibular systems.Subjects and Methods: The study involved 54 young adults (27 males and 27 females) aged 18-25 years. The recruited participants were subjected to the cervical vestibular evoked myogenic potentials (cVEMP) test and video head impulse test (vHIT). The cVEMP and vHIT tests were performed once each in the absence and presence of an optical illusion. In addition, after each test, whether the individuals felt balanced was determined using a questionnaire.Results: cVEMP results in the presence of the optical illusion showed shortened latencies and increased amplitudes for the left side in comparison to the results in the absence of the optical illusion (<i>p</i>≤0.05). When vHIT results were compared, it was seen that the right lateral and bilateral anterior canal gains were increased, almost to 1.0 (<i>p</i><0.05).Conclusions: It is thought that when the visual-vestibular inputs are incompatible with each other, the sensory reweighting mechanism is activated, and this mechanism strengthens the more reliable (vestibular) inputs, while suppressing the less reliable (visual) inputs. As long as the incompatible condition persists, the sensory reweighting mechanism will continue to operate, thanks to the feedback loop from the efferent vestibular system.

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        Subglottic Laryngeal Perforation After Redo Thyroidectomy: A Case Report

        Muhammed Adi Syazni,rk Yiğit,Özdemir Murat,Öztürk Kerem,Makay Özer 대한내분비외과학회 2023 The Koreran journal of Endocrine Surgery Vol.23 No.3

        Inadvertent airway injury is a rare complication of thyroidectomy that can be life-threatening. Most studies report injuries occurring within the tracheal region. In this report, we present a case of subglottic laryngeal perforation following completion thyroidectomy. Based on our literature review, we believe that this is the first report of such a case. Through a multidisciplinary approach, the patient was treated successfully with surgery. This article aims to emphasise that more proximal airway injuries may occur with thyroidectomy and explore the possible factors and treatment options.

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