Evan Cesanek

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Recent results have shown that effects of pictorial illusions in grasping may decrease over the course of an experiment. This can be explained as an effect of sensorimotor learning if we consider a pictorial size illusion as simply a perturbation of visually perceived size. However, some studies have reported very constant illusion effects over trials. In(More)
Not a great deal is known about the electrophysiology of category learning. In our study, one group of participants learned novel categories of tropical fish, an exposure group viewed the same stimuli without learning any categories, and a control group did not see the stimuli. All three groups then viewed a sequence of quadruples of fish while their EEG(More)
Haptic feedback consists of the tactile and kinesthetic information available during physical interaction with surfaces and objects. When grasping an object, haptic information specifies object size and therefore may influence grasp kinematics over multiple grasps. In real-world grasping movements, the visual size of an object exactly corresponds to its(More)
Grasping is a flexible human motor behavior coordinated on the basis of perceptual information about the structure of surfaces in reachable space. In two original experiments, we investigated the perceptual information supporting accurate grasp performance. Participants in these experiments reached-to-grasp target objects that were situated in illusory(More)
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