Download or read book Assessment of the IpRGC Contribution to the Human Pupillary Light Reflex Using a Commercial Pupillometer written by Nicholas Tyler Perichak and published by . This book was released on 2015 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intrinsically photosensitive retinal ganglion cells (ipRGCs) are a rare subgroup of retinal ganglion cells that contain the photopigment melanopsin. These cells are irradiance detectors that send information to the brain to control circadian rhythms and pupil size. ipRGCs mediate the sustained pupil response occurring post-illumination, due to their prolonged firing post-light offset. They are most sensitive to light with a wavelength of 480 nm. Their unique temporal properties have been used previously to assess the ipRGC contribution to human pupillary light reflex (PLR) by demonstrating a difference in the post-illumination pupil response between flickering red and blue light. My goal for this study was to determine if a commercial pupillometer, the RAPDx (Konan Medical), is capable of detecting the ipRGC contribution to the human PLR. A total of 13 healthy subjects (ages: 23-30) were presented with three types of flickering (0.1 Hz) stimuli: red light only, blue light only, and alternating red and blue light. The stimuli were presented using the RAPDx, which recorded pupil size under infrared illumination. Pupil size was captured every 25 milliseconds by the RAPDx pupillometer. Pupil fluctuation (constriction and re-dilation) in responses to the light stimuli were recorded and analyzed.
Download or read book The Pupil Behavior Anatomy Physiology and Clinical Biomarkers written by Andrew J. Zele and published by Frontiers Media SA. This book was released on 2020-06-22 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Pupillography written by Jochen Kuhlmann and published by . This book was released on 1999 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pituitary Adenylate Cyclase Activating Polypeptide written by Hubert Vaudry and published by Springer Science & Business Media. This book was released on 2003 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pituitary Adenylate Cyclase-Activating Polypeptide is the first volume to be written on the neuropeptide PACAP. It covers all domains of PACAP from molecular and cellular aspects to physiological activities and promises for new therapeutic strategies. Pituitary Adenylate Cyclase-Activating Polypeptide is the twentieth volume published in the Endocrine Updates book series under the Series Editorship of Shlomo Melmed, MD.
Download or read book Atlas of Inherited Retinal Diseases written by Stephen H. Tsang and published by Springer. This book was released on 2018-12-21 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Atlas of Inherited Retinal Disorders provides a thorough overview of various inherited retinal dystrophies with emphasis on phenotype characteristics and how they relate to the most frequently encountered genes. It also meets the previously unmet needs of PhD students who will benefit from seeing the phenotypes of genes they work on and study. Further, because genetic-testing costs are quite high and spiraling higher, this Atlas will help geneticists familiarize themselves with the candidate gene approach to test patients’ genomes, enabling more cost-efficient testing. This invaluable atlas is organized into eight sections starting with an introduction to the basic knowledge on retinal imaging, followed by diseases listed according to inheritance pattern and disorders with extraocular manifestations grouped by defining features. This structure will be intuitive to clinicians and students studying inherited retinal disorders.
Download or read book Common Neuro Ophthalmic Pitfalls written by Valerie A. Purvin and published by Cambridge University Press. This book was released on 2009-01-22 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: A case-based teaching tool describing real-life cases of neuro-ophthalmic disorders. Bridges the gap between textbook information and everyday clinical practice.
Download or read book Developmental Cognitive Neuroscience written by Mark H. Johnson and published by John Wiley & Sons. This book was released on 2011-07-18 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of Developmental Cognitive Neuroscience presents a thorough updating and enhancement of the classic text that introduced the rapidly expanding field of developmental cognitive neuroscience. Includes the addition of two new chapters that provide further introductory material on new methodologies and the application of genetic methods in cognitive development Includes several key discussion points at the end of each chapter Features a greater focus on mid-childhood and adolescence, to complement the previous edition?s emphasis on early childhood Brings the science closer to real-world applications via a greater focus on fieldwork Includes a greater emphasis on structural and functional brain imaging
Download or read book Clinical Decisions in Glaucoma written by Elizabeth Hodapp and published by . This book was released on 1993 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides a practical and expert problem-solving approach to the diagnosis and management of the glaucoma patient. The authors place emphasis on an approach to chronic, year-in, year-out care of the glaucoma patient - one of the most challenging management issues of the general ophthalmologists' practice. The first section of the book reviews the differential diagnosis of the patients who present with signs and symptoms suggestive of glaucoma, such as elevated pressure, abnormal optic nerve head, abnormal visual field and abnormal anterior chamber angle. The second section focuses on the chronic management of glaucoma. The authors describe the thought process/clinical decisions used to formulate and monitor treatment. In particular, they describe: how to determine the vigour with which to treat and monitor the individual patient; and how to determine if treatment is adequate and/or successful.
Download or read book Seeing Beyond the Eye The Brain Connection written by Christine Nguyen and published by Frontiers Media SA. This book was released on 2021-09-02 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Retinal Degenerative Diseases written by Matthew M. LaVail and published by Springer Science & Business Media. This book was released on 2011-12-21 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will contain the proceedings of the XIV International Symposium on Retinal Degeneration (RD2010), held July 13-17, 2010, in Mont-Tremblant, Quebec, Canada. The volume will present representative state-of-the-art research in almost all areas of retinal degenerations, ranging from cytopathologic, physiologic, diagnostic and clinical aspects; animal models; mechanisms of cell death; candidate genes, cloning, mapping and other aspects of molecular genetics; and developing potential therapeutic measures such as gene therapy and neuroprotective agents for potential pharmaceutical therapy.
Download or read book Biologic Effects of Light written by Michael F. Holick and published by de Gruyter. This book was released on 1992 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keine ausführliche Beschreibung für "Biologic Effects of Light" verfügbar.
Download or read book Handbook of Executive Functioning written by Sam Goldstein and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning. Attention. Memory. Self-regulation. These and other core cognitive and behavioral operations of daily life comprise what we know as executive functioning (EF). But despite all we know, the concept has engendered multiple, often conflicting definitions and its components are sometimes loosely defined and poorly understood. The Handbook of Executive Functioning cuts through the confusion, analyzing both the whole and its parts in comprehensive, practical detail for scholar and clinician alike. Background chapters examine influential models of EF, tour the brain geography of the executive system and pose salient developmental questions. A section on practical implications relates early deficits in executive functioning to ADD and other disorders in children and considers autism and later-life dementias from an EF standpoint. Further chapters weigh the merits of widely used instruments for assessing executive functioning and review interventions for its enhancement, with special emphasis on children and adolescents. Featured in the Handbook: The development of hot and cool executive function in childhood and adolescence. A review of the use of executive function tasks in externalizing and internalizing disorders. Executive functioning as a mediator of age-related cognitive decline in adults. Treatment integrity in interventions that target executive function. Supporting and strengthening working memory in the classroom to enhance executive functioning. The Handbook of Executive Functioning is an essential resource for researchers, scientist-practitioners and graduate students in clinical child, school and educational psychology; child and adolescent psychiatry; neurobiology; developmental psychology; rehabilitation medicine/therapy and social work.
Download or read book Seeing Black and White written by Alan Gilchrist and published by Oxford University Press. This book was released on 2006-06-08 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the human visual system determines the lightness of a surface, that is, its whiteness, blackness, or grayness, remains--like vision in general--a mystery. In fact, we have not even been able to create a machine that can determine, through an artificial vision system, whether an object is white, black, or gray. Although the photoreceptors in the eye are driven by light, the light reflected by a surface does not reveal its shade of gray. Depending upon the level of illumination, a surface of any shade of gray can reflect any amount of light. In Seeing Black and White Alan Gilchrist ties together over 30 years of his own research on lightness, and presents the first comprehensive, historical review of empirical work on lightness, covering the past 150 years of research on images ranging from the simple to the complex. He also describes and analyzes the many theories of lightness--including his own--showing what each can and cannot explain. Gilchrist highlights the forgotten-yet-exciting work done in the first third of the twentieth century, describing several crucial experiments and examining the brilliant but nearly unknown work of the Hungarian gestalt theorist, Lajos Kardos. Gilchrists review also includes a survey of the pattern of lightness errors made by humans, many of which result in delightful illusions. He argues that because these errors are not random, but systematic, they are the signature of our visual software, and so provide a powerful tool that can reveal how lightness is computed. Based on this argument and the concepts of anchoring, grouping, and frames of reference, Gilchrist presents a new theoretical framework that explains an unprecedented array of lightness errors. As both the first comprehensive overview of research on lightness and the first unified presentation of Gilchrists new theoretical framework Seeing Black and White will be an invaluable resource for vision scientists, cognitive psychologists, and cognitive neuroscientists.
Download or read book Sleep Science written by Hawley Montgomery-Downs and published by Oxford University Press, USA. This book was released on 2020 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Roughly one third of our lifetime is - or should be - spent asleep; yet despite the expansive scientific knowledge gained in many fields (i.e., psychology, neurophysiology) about our wake state, only relatively recently have we begun to catch up with the study of sleep. As Tom Roth, former editor of the journal Sleep, put it, "It's analogous to going to Mars with a third of the Earth's surface still unexplored" [1].Sleep is a strange experience, playing tricks on our consciousness. Sometimes within only a couple minutes of dozing off, we can go through a plethora of vivid and complex experiences. Alternatively, we may lapse into what feels like a total absence of consciousness, a jump in time, waking after a long slumber with no memory of the last eight hours. Sleep does not bend time, but without a doubt, it alters our consciousness. It is, therefore, no surprise that most people enjoy sleeping - when we sleep, we no longer feel the toothache, headache or the heartache that we suffer when awake"--
Download or read book Chemical Sensitivity and Sick Building Syndrome written by Yukio Yanagisawa and published by CRC Press. This book was released on 2017-01-06 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by multidisciplinary experts in medicine, chemistry, and architecture, this book examines chemical sensitivity (CS). In 15 chapters fitted to 15 lectures, it discusses not only the medical explanation, but also the environmental factors of this hypersensitive reaction, such as chemistry and architectural aspects. The book overviews pollution-induced diseases such as Minamata Disease. It also points out the similarity of modern hypersensitivity syndromes to historical pollution diseases from the viewpoints of not only natural scientific aspects, but also social understanding of the disease.
Download or read book Retinal Development written by Evelyne Sernagor and published by Cambridge University Press. This book was released on 2012-11-29 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This advanced text, first published in 2006, takes a developmental approach to the presentation of our understanding of how vertebrates construct a retina. Written by experts in the field, each of the seventeen chapters covers a specific step in the process, focusing on the underlying molecular, cellular, and physiological mechanisms. There is also a special section on emerging technologies, including genomics, zebrafish genetics, and stem cell biology that are starting to yield important insights into retinal development. Primarily aimed at professionals, both biologists and clinicians working with the retina, this book provides a concise view of vertebrate retinal development. Since the retina is 'an approachable part of the brain', this book will also be attractive to all neuroscientists interested in development, as processes required to build this exquisitely organized system are ultimately relevant to all other parts of the central nervous system.
Download or read book Anterior Segment Optical Coherence Tomography written by Roger F. Steinert and published by SLACK Incorporated. This book was released on 2008 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-speed anterior segment optical coherence tomography (OCT) offers a non-contact method for high resolution cross-sectional and three-dimensional imaging of the cornea and the anterior segment of the eye. As the first text completely devoted to this topic, Anterior Segment Optical Coherence Tomography comprehensively explains both the scientific principles and the clinical applications of this exciting and advancing technology. Anterior Segment Optical Coherence Tomography enhances surgical planning and postoperative care for a variety of anterior segment applications by expertly explaining how abnormalities in the anterior chamber angle, cornea, iris, and lens can be identified and evaluated using the Visante OCT(TM). Inside Anterior Segment Optical Coherence Tomography, Dr. Roger Steinert and Dr. David Huang, along with 22 of the field's leading professionals, provide a wealth of useful clinical and physiological material about this new diagnostic imaging technique. Valuable images are included to assist in the pre- and postoperative assessment of various anterior segment disorders. Additionally, this unique resource contains detailed information on biometric measurements to enhance diagnostic capability. On the leading edge of anterior segment imaging: - Mapping of corneal thickness and keratoconus evaluation - Measurement of LASIK flap and stromal bed thickness - Visualization and measurement of anterior chamber angle and diagnosis of narrow angle glaucoma - Measuring the dimensions of the anterior chamber and assessing the fit of intraocular lens implants - Visualizing and measuring the results of corneal implants and lamellar procedures - Imaging through corneal opacity to see internal eye structures With the increase in popularity of anterior chamber imaging, and anterior segment OCT proving to be the best tool for high resolution biometry, Anterior Segment Optical Coherence Tomography is a must-have for anterior segment, refractive, cornea, and glaucoma surgeons.
