Health News

Diverse neural signals are key to rich visual information

Visual sensation begins at the retina, which is the neural tissue located at the back of eyeballs. It has been known that the retina detects light using photoreceptors which are light-sensitive nerve cells.In case of retinal degenerative diseases such as retinitis pigmentosa and age-related macular degeneration, those light sensing neurons are gradually damaged, leading to […]

Health News

Visual impairment may up risk for dementia in older women

(HealthDay)—In older women, objectively measured visual impairment is associated with a twofold to more than fivefold increased risk for dementia, according to a study published online April 16 in JAMA Ophthalmology. Elaine M. Tran, of the Stanford University School of Medicine in Palo Alto, California, and colleagues compared the likelihood of dementia or mild cognitive […]

Health Problems

Visual perceptual skills are updated by process similar to memory reconsolidation, study finds

A new study shows that updating visual perceptual skills—which humans rely on to recognize what they see, including potential threats, and ignore unimportant background—is an active process with many similarities to the way they stabilize memories. Published in Nature Human Behavior, the study led by Brown University researchers tested whether memory reconsolidation, observed in animals, […]