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102 results
  • Flickering Stimuli Do Not Reliably Induce Visual Hallucinations in Parkinson's Disease. [Journal Article]
    J Parkinsons Dis 2019; 9(3):631-635Zarkali A, Lees AJ, Weil RS
  • Visual hallucinations are a common and often distressing feature of Parkinson's disease; they are ephemeral and capricious, making them difficult to study but tend to be more prominent in dim illumination. Flickering stimuli can induce simple hallucinations even in healthy individuals. We tested a stroboscope and an equivalent full-screen flickering stimulus in 16 participants: 7 patients with Pa…
  • Low-Cost High-Speed In-Plane Stroboscopic Micro-Motion Analyzer. [Journal Article]
    Micromachines (Basel) 2017; 8(12)Pandey SS, Banerjee A, … Mastrangelo CH
  • Instrumentation for high-speed imaging and laser vibrometry is essential for the understanding and analysis of microstructure dynamics, but commercial instruments are largely unaffordable for most microelectromechanical systems (MEMS) laboratories. We present the implementation of a very low cost in-plane micro motion stroboscopic analyzer that can be directly attached to a conventional probe sta…
  • Stroboscope Based Synchronization of Full Frame CCD Sensors. [Journal Article]
    Sensors (Basel) 2017; 17(4)Shen L, Feng X, … Wang Z
  • The key obstacle to the use of consumer cameras in computer vision and computer graphics applications is the lack of synchronization hardware. We present a stroboscope based synchronization approach for the charge-coupled device (CCD) consumer cameras. The synchronization is realized by first aligning the frames from different video sequences based on the smear dots of the stroboscope, and then m…
  • Automatic and quantitative measurement of laryngeal video stroboscopic images. [Journal Article]
    Proc Inst Mech Eng H 2017; 231(1):48-57Kuo CJ, Kuo J, … Ke BH
  • The laryngeal video stroboscope is an important instrument for physicians to analyze abnormalities and diseases in the glottal area. Stroboscope has been widely used around the world. However, without quantized indices, physicians can only make subjective judgment on glottal images. We designed a new laser projection marking module and applied it onto the laryngeal video stroboscope to provide sc…
  • Laryngeal inflammatory myofibroblastic tumor (IMT): a case report and review of the literature. [Case Reports]
    J Med Case Rep 2016; 10(1):180Tay SY, Balakrishnan A
  • CONCLUSIONS: This report highlights the importance of understanding the differential diagnosis for a child with hoarseness. It is not uncommon for a pediatrician, a general practitioner, and a pediatric otolaryngologist to see a child presenting with hoarseness. In most cases, the diagnosis made would be screamer's nodules, which is commonly seen in children. In a small group, recurrent respiratory papillomatosis form the diagnosis. Over the past few years, the cases of recurrent respiratory papillomatosis have decreased significantly. Laryngeal tumors are not common in children. However, we must maintain a high index of suspicion when we have a child with hoarseness who does not improve with speech therapy and watchful waiting. In such situations, a stroboscope is usually necessary to diagnose the voice problems and to rule out pathological conditions such as laryngeal tumors. If left untreated, the lesion can grow with time and result in a life-threatening airway condition. We also demonstrate our endoscopic technique in this report, and it has proven to be safe with no increased recurrence and much lower morbidity.
  • Vocal folds morphological pathologies detection using Gabor filtering and Principal Component Analysis. [Journal Article]
    Technol Health Care 2015; 23(5):591-604Mendez-Zorrilla A, Garcia-Zapirain B
  • CONCLUSIONS: One of the proposed study's key elements has been which objective measurements are of significance for the specialist. In this case, it is those that enable the specialist to calculate the size of the pathology (previously classified automatically) that he/she is observing, thus enabling them to provide the patient with more information or to prescribe treatment and even measure its development.
  • Allergic rhinitis and voice change. [Journal Article]
    Logoped Phoniatr Vocol 2016; 41(4):143-8Ohlsson AC, Drevsäter A, … Johansson I
  • The aim of this study was to investigate voice function in patients with birch pollen allergy. Voice recordings for acoustic analysis were performed during pollen season and non-pollen season, with 30 patients and 30 controls, and all participants answered a questionnaire about voice symptoms. The results show that the patients reported more voice symptoms than controls during both seasons. In th…
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