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Our understanding of visual perception and visual cognition has advanced considerably over the last decades. The effects of ageing on visual perception and visual cognition are less well understood. This Research Topic features state-of-the-art approaches to determining the effects of ageing on visual perception, visual attention, visual memory and visually guided behaviour. Studies using methods that incorporate psychophysics, eye movements, electrophysiology, structural and functional neuroimaging, as well as computational modelling are included. In addition to the focus on how ageing effects normal vision, the topic also includes studies on the effects of pathological ageing in the retina (e.g., age-related macular degeneration) and the brain (e.g., neurodegenerative disorders) on vision and visual cognition.

Visual perception. --- Aging. --- functional MRI --- Ageing --- Vision --- central scotoma --- Mild Cognitive Impairment --- age-related macular degeneration --- Alzheimer's disease --- visual cognition

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For centuries, observers have noted the many obstacles to intellectual change in science. In a much-discussed paper published in Scientific American in 1972, molecular biologist Gunther Stent proposed an explicit criterion for one kind of obstacle to scientific discovery. He denoted a claim or hypothesis as "premature" if its implications cannot be connected to canonical knowledge by a simple series of logical steps. Further, Stent suggested that it was appropriate for the scientific community to ignore such hypotheses so that it would not be overwhelmed by vast numbers of false leads. In this volume, eminent scientists, physicians, historians, social scientists, and philosophers respond to Stent's thesis.

Science --- Discoveries in science --- Normal science --- Philosophy of science --- Breakthroughs, Scientific --- Discoveries, Scientific --- Scientific breakthroughs --- Scientific discoveries --- Creative ability in science --- Research --- Philosophy. --- Stent, Gunther S. --- Stent, Gunther Siegmund, --- Stent, G. S. --- Stensch, Gunther Siegmund, --- archibald garrod. --- bacteria. --- darwin. --- earth sciences. --- elements. --- evolution. --- evolutionary biology. --- expanding universe. --- gene transfer. --- gene transmission. --- genetics. --- gunther stent. --- ida noddack. --- joseph adams. --- natural selection. --- nuclear fission. --- philosophy of science. --- physics. --- polanyi. --- political science. --- prematurity. --- research. --- science. --- scientific change. --- scientific discovery. --- scientific leap. --- scientific method. --- scientific theory. --- scientists. --- scotoma. --- scurvy. --- social science. --- surface adsorption. --- transuranium actinide elements.