![]() ![]() Lastly, our model provides a structure to teach resource utilization and cost containment relating to neurologic diagnoses. It may help educators build curricula and evaluation systems that emphasize concrete activities of diagnostic practice. The model may be useful for trainees to learn how to allocate time to make a diagnosis. The data reveal a heavy emphasis on the clinical domain for most diagnoses. This model shows the relative emphasis of each of the 3 core domains for 9 common diagnoses (e.g., stroke is C4 L1 N4 with "4" as the highest priority per domain). To codify this variance, we developed a provisional model of diagnostic practice derived from the data consisting of a 3-point coordinate shorthand (Cx Lx Nx) and a graphic. This practice of coordination varied across common disease categories (e.g., meningitis vs dementia). ![]() All neurologists coordinated findings from the 3 domains to arrive at a final diagnosis. Neurologists were uniform in their practices across these domains except within the clinical domain, where the physical examination varied considerably among clinicians. We describe 3 core domains of diagnosis: 1) clinical (C), 2) laboratory and electrodiagnostics (L), and 3) neuroimaging (N). The study consisted of six 2-week periods of in situ observations and interviews of 6 experienced community neurologists in Northern California. To our knowledge, this report is the first set of systematic observations of diagnostic practices of community neurologists in their clinics. Study of diagnostic practice is necessary to optimize neurologists' clinical performance and ensure patient safety. These are the first motion-picture sequences of neurologic disorders ever filmed, and provide an important visual archive and teaching resource for neurologic disorders that were prevalent in the late 19th century. Muybridge and Dercum photographed patients with tabes dorsalis, hemiparesis, paraparesis, athetotic cerebral palsy, lead encephalopathy, congenital hydrocephalus with diparesis, poliomyelitis, pseudoseizures, psychogenic movement disorder, and other conditions. Subjects were recruited from the neurology services of the University Hospital and the Philadelphia Hospital. ![]() In 1885, Philadelphia neurologist Francis Dercum (1856-1931) collaborated with Muybridge at the University of Pennsylvania to photograph sequential images of patients with various neurologic disorders involving abnormal movements. Examination of published writings and photographic sequences by Muybridge and Dercum, and primary source documents, including letters from Dercum. In the late 1870s and 1880s, prior to the development of movie cameras or projectors, Muybridge photographed sequential images of people and animals in motion, using arrays of sequentially triggered single-image cameras and multilens cameras. 85 likes, 0 comments - Silicon Power (siliconpower.global) on Instagram: If sequential burst mode photography is your thing, the new Superior SDXC UHS-I. We conclude that the development of astronomical sequential photography was constrained by the reduced number of subjects to which the technique could be applied.To analyze the contributions of American photographer Eadweard Muybridge (1830-1904) and Philadelphia neurologist Francis Dercum (1856-1931) toward creating the first motion-picture sequences of patients with neurologic disorders. Astronomical sequential photographs were obtained both before and after 1895. The technique was seldom used but apparently the modern film camera invention played no role on this situation. During the time period studied astronomical sequential photography was employed to determine the time of the instants of contact in transits and occultations, and to study total solar eclipses. In this paper we strive to identify from the available documents the attempts made between 18, and discuss the motivations behind them and the results obtained. In the following years, in order to study the variability or the motion of celestial objects, several instruments, either manually or automatically actuated, were devised to obtain as many photographs as possible of astronomical events in a short time interval. This device, the 'photographic revolver', is commonly considered today as the earliest cinema precursor. In 1873 Jules Janssen conceived the first automatic sequential photographic apparatus to observe the eagerly anticipated 1874 transit of Venus. ![]()
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