منابع مشابه
mfERG response dynamics of the aging retina.
PURPOSE To determine age-related changes in retinal response dynamics derived from multifocal electroretinograms (mfERGs). METHODS MfERG data were obtained from 70 subjects with normal phakic eyes, age 9 to 80 years. Whereas the first- and higher-order kernels resulting from the mfERG contain detailed information regarding the nonlinear response dynamics of the retina, they do not lend themse...
متن کاملDelayed mfERG responses in myopia
It has been suggested that changes in the multifocal electroretinogram (mfERG) responses in myopes are primarily due to the increased axial length that accompanies myopia development. We investigated the characteristics of mfERG responses between emmetropes and myopes and determined the contribution of axial length to the mfERG data in 30 subjects (10 emmetropes and 20 myopes) using VERIS I. Th...
متن کاملThe Multifocal Electroretinogram (mfERG): Applications and Limitations
What Is the mfERG? The electroretinogram (ERG) is a mass potential, the result of the summed electrical activity of the cells of the retina. Typically, the clinical ERG is elicited by full-field (Ganzfeld) flashes of light. With an appropriate selection of test and background lights, rod and cone function can be assessed separately. As the ganglion cells contribute relatively little to the full...
متن کاملCan the OCT replace functional tests such as the mfERG?
Patients with retinal problems are increasingly examined with morphologic measurements such as optic coherence imaging (OCT), which is quick and easy to administer. This might give the impression that more time-consuming functional assessments, such as electrophysiological examinations, are unnecessary. However, these tests measure different things—as Dhamdhere et al. showed in patients with di...
متن کاملAutobiographical memory and aging
Autobiographical memory, or memory for personal experiences, allows individuals to define themselves and construct a meaningful life story. Current research aims to review the definition and theories of autobiographies memory and how it usually changes or abnormally in older adults. Base on studies, as we grow older autobiographical memory drops off, also semantic memory changes a little or som...
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ژورنال
عنوان ژورنال: Eye
سال: 2004
ISSN: 0950-222X,1476-5454
DOI: 10.1038/sj.eye.6701777