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How does the multi-sensory nature of stimuli influence information processing? Cognitive systems with limited selective attention can elucidate these processes. Six-year-olds, 11-year-olds and 20-year-olds engaged in a visual search task that required them to detect a pre-defined coloured shape under conditions of low or high visual perceptual load. On each trial, a peripheral distractor that could...
Several pathological mutations have been identified in human POLG gene, encoding for the catalytic subunit of Pol γ, the solely mitochondrial replicase in animals and fungi. However, little is known regarding non-pathological polymorphisms found in this gene. Here we studied, in the yeast model Saccharomyces cerevisiae, eight human polymorphisms. We found that most of them are not neutral but enhanced...
Recent reports have shown that prions, the causative agent of transmissible spongiform encephalopathies, accumulate in the skeletal muscle of diseased animals and man. In an attempt to characterise in this tissue the prion protein (PrP C ), whose conformational rearrangement governs the generation of prions, we have analysed the protein in primary cultured murine myocytes and in different...
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