Deleterious effects of roving on learned tasks

Clarke, Aaron M.; Grzeczkowski, Lukasz; Mast, Fred W.; Gauthier, Isabel; Herzog, Michael H. (2014). Deleterious effects of roving on learned tasks. Vision Research, 99, pp. 88-92. Elsevier Science 10.1016/j.visres.2013.12.010

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In typical perceptual learning experiments, one stimulus type (e.g., a bisection stimulus offset either to the left or right) is presented per trial. In roving, two different stimulus types (e.g., a 30′ and a 20′ wide bisection stimulus) are randomly interleaved from trial to trial. Roving can impair both perceptual learning and task sensitivity. Here, we investigate the relationship between the two. Using a bisection task, we found no effect of roving before training. We next trained subjects and they improved. A roving condition applied after training impaired sensitivity.

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