Donders on Asthenopia
نویسندگان
چکیده
منابع مشابه
Donders' law in torticollis.
We investigated head movements of patients with spasmodic torticollis toward targets in various directions. These patients, whose severe dystonia was reflected in an abnormal resting head position, appeared to retain a Donders'-type strategy for the control of the rotational degrees of freedom of the head. As in normals, rotation vectors, representing head orientation, were confined to a curved...
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In dear memory of my mother SUMMARY Asthenopia is a term used to describe different symptoms associated with the use of the eyes, such as pain, blurred vision, diplopia, headaches. Asthenopia is most often reported in association with near vision. Children with asthenopia complain of such symptoms particularly when reading and writing. Asthenopia is often divided into two main categories: refra...
متن کاملAsthenopia in schoolchildren
OBJECTIVE To assess asthenopia prevalence and associated factors in schoolchildren aged 6-16. METHODS This was a cross-sectional study of all children attending the first to eighth grades at two public schools in the urban region of a medium-sized town in Southern Brazil between April and December 2012. A questionnaire on socioeconomic and cultural matters was answered by parents, while the c...
متن کاملAnomalies of Refraction, Donders' Essay
Apart from the interest of the book on historical grounds, its value is enhanced by the fact that it is a summary of the late Professor Donders' monumental work on the subject in which he was the pioneer. The anomalies of refraction are summarized in a series of aphorisms which show, in a striking manner, how far the writer was in advance of his times, and how little has since been added to the...
متن کاملVerification of Donders' subtraction method.
In an experiment on 6 young adults advance (precued) information of the correct choice response was utilized completely: (a) For precue-to-stimulus intervals (PSIs) clearly shorter than the difference between mean choice and simple reaction time (RT), median response latency (L) measured from precue onset was invariant; (b) For clearly longer PSIs, median RT was very near the value for simple R...
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ژورنال
عنوان ژورنال: The Boston Medical and Surgical Journal
سال: 1866
ISSN: 0096-6762,1533-4406
DOI: 10.1056/nejm186611290751801