Topic: visual categorization

Animals are remarkably adept at recognizing the categorical significance of stimuli and using this information to guide behavior. Investigations of visual categorization in primates have focused on a hierarchy of cortical areas that transform veridical sensory information into abstract categorical representations. However, categorical behaviors are evident throughout the animal kingdom, including in species without a neocortex, raising a question about the contributions of subcortical regions to primate categorization. One candidate structure is the superior colliculus (SC), a midbrain sensori

Previous work has suggested that our perception of time is plastic and dependent on the distance of the stimulus to our body. For example, Annelli et al (2015) showed that stimuli presented in peri-personal and far space are judged differently and that this distance-effect on time perception can be shaped by training participants with a tool that effectively extends the reachable space. We here aimed to replicate and extend these results using a paradigm in which we tested time perception at multiple distances from the body prior to and following active tool-use training. In two experiments, w