The clinical picture of leptospirosis is often confusing and biological confirmation with reference tests (microagglutination test or isolation of the organism) is not usually possible in tropical countries where the disease remains undiagnosed. We report here the first human cases of leptospirosis in Vanuatu (South Pacific), which occurred during the 1989-1990 epidemic of dengue, and discuss the differential diagnosis of the 2 diseases.
People who have experienced the mental health system were hired and trained as researchers in a community mental health research project. Throughout the course of the project, these consumer researchers reflected on what they learned about their research experience. This article is a window into this learning process and offers an opportunity to see research through the eyes of consumer researchers. We begin by giving an overview of the research project and introducing the research team. Then the consumer researchers in our project share their experiences and insights about involving mental health consumers in research projects. We hope that ourproject's experiences will help other projects that involve consumers in ways that are empowering for the consumer and beneficial to the research.
Visual space is sometimes said to be "compressed" before saccadic eye movements. The most central evidence for this hypothesis is a converging pattern of localization errors on single flashes presented close to saccade time under certain conditions. An intuitive version of the compression hypothesis predicts that the reported distance between simultaneous, spatially separated presaccadic flashes should contract in the same way as their individual locations. In our experiment we tested this prediction by having subjects perform one of two tasks on stimuli made up of two bars simultaneously flashed near saccade time: either localizing one of the bars or judging the separation between the two. Localization judgments showed the previously observed converging pattern over the 50-100 ms before saccades. Contractions in perceived separation between the two bars were not accurately predicted by this pattern: they occurred mainly during saccades and were much weaker than convergence in localization. Different forms of spatial information about flashed stimuli can be differentially modulated before, during, and after saccades. Structural alterations in the perceptual field around saccades may explain these different effects, but alternative hypotheses based on decision making under uncertainty and on the influence of other perisaccadic mechanisms are also consistent with this and other evidence.
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