It's one of the inescapable realities of aging: The older we get, the slower we tend to move—whether we're walking around the block or just reaching for the remote control.
Apr 23, 2024
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A chlamydia vaccine has triggered immune responses in an early trial, raising hopes that one day it might help curb the spread of the sexually transmitted infection (STI).
Apr 12, 2024
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The clinical knowledge and reasoning skills of GPT-4 are approaching the level of specialist eye doctors, a study led by the University of Cambridge has found.
Apr 17, 2024
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Christian Espinoza, director of a Southern California drug-treatment provider, recently began employing a powerful new assistant: an artificial intelligence algorithm that can perform eye exams with pictures taken by a retinal ...
Apr 5, 2024
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Parents of children with unilateral congenital cataracts (UCC) may wonder how long to patch, and whether extended periods of patching might affect their child's development or cause undue stress for the child or family, particularly ...
Apr 18, 2024
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So, you got your eyesight tested and found out you need your first pair of glasses. Or you found out you need a stronger pair than the ones you have. You put them on and everything looks crystal clear. But after a few weeks ...
Apr 8, 2024
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Some teenagers with autism use a different set of eye-movement patterns from their non-autistic counterparts while recognizing faces, according to James McPartland, Ph.D., Harris Professor in the Yale Child Study Center (YCSC) ...
Mar 28, 2024
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Working memory is one of the brain's executive functions, a skill that allows humans to process information without losing track of what they're doing.
Apr 22, 2024
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The discovery of traces of the bird flu virus in pasteurized cow milk in the United States sparked questions over whether the disease could spread to humans, but experts say there is little risk from food contamination.
Apr 25, 2024
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Today is your last chance until 2044 to see a total eclipse of the sun in the continental United States.
Apr 8, 2024
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Eyes are organs that detect light, and send signals along the optic nerve to the visual and other areas of the brain[citation needed]. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in cnidaria, molluscs, chordates, annelids and arthropods.
The simplest "eyes", such as those in unicellular organisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms. From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment.
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