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British neurologist Oliver Sacks lost his stereoscopic vision in 2009 due to a malignant tumor in his right eye and had no remaining vision in that eye. [6] His loss of stereo vision was recounted in his book The Mind's Eye, published in October 2010. [7] In 2012 one case of stereoblindness was reportedly cured by watching a 3D film. [8]
Neuroplasticity is the process by which neurons adapt to a disturbance over time, and most often occurs in response to repeated exposure to stimuli. [27] Aerobic exercise increases the production of neurotrophic factors [note 1] (e.g., BDNF, IGF-1, VEGF) which mediate improvements in cognitive functions and various forms of memory by promoting blood vessel formation in the brain, adult ...
vision (which can be used to monitor and adjust for changes in body position). A patient who has a problem with proprioception can still maintain balance by using vestibular function and vision. In the Romberg test, the standing patient is asked to close their eyes. An increased loss of balance is interpreted as a positive Romberg's test.
Anything that affects any of these variables can have a negative effect on balance and maintaining posture. [47] This effect has been seen in research involving elderly subjects when compared to young controls, [ 48 ] in glaucoma patients compared to age matched controls, [ 49 ] cataract patients pre and post surgery, [ 50 ] and even something ...
This is different from visual acuity, which refers to how clearly a person sees (for example "20/20 vision"). A person can have problems with visual perceptual processing even if they have 20/20 vision. The resulting perception is also known as vision, sight, or eyesight (adjectives visual, optical, and ocular, respectively).
The balance system works with the visual and skeletal systems (the muscles and joints and their sensors) to maintain orientation or balance. Visual signals sent to the brain about the body's position in relation to its surroundings are processed by the brain and compared to information from the vestibular and skeletal systems.
(Comment: A book for experts, summarizing the state of the art in our understanding of the balance system) Lawson, Ben D; Rupert, Angus H; Kelley, Amanda M. "Mental Disorders Comorbid with Vestibular Pathology". A preview of an article on how vestibular disorders can cause symptoms that look like mental disorders.
Brain training (also called cognitive training) is a program of regular activities purported to maintain or improve one's cognitive abilities. The phrase “cognitive ability” usually refers to components of fluid intelligence such as executive function and working memory.