In the first experiment we showed that difficult length discriminations can be facilitated by
imagining a visual context frame that serves to emphasize small length differences between …

One of the primary functions of the human visual system is object recognition, an ability that
allows us to relate the visual stimuli falling on our retinas to our knowledge of the world. For …

Ambiguous pictures that could be seen as faces or as meaningless patterns were the stimuli
in two recognition-memory experiments. Recognition was far more accurate when the stimuli …

Performance in perceptual tasks improves with repetition (perceptual learning), eventually
reaching a saturation level. Typically, when perceptual learning effects are studied, stimulus …

The acquisition of many perceptual skills proceeds over a course of days. However, little is
known about how much daily training is needed for such learning to occur. Here we …

Background: Recent experiments have demonstrated a remarkable amount of specificity in
the learning of simple visual tasks in humans, as well as considerable plasticity of receptive …

Evidence for viewpoint-specific image-based object representations have been collected
almost entirely using exemplar-specific recognition tasks. Recent results, however, implicate …

Evidence from neurophysiological and psychological studies is coming together to shed
light on how we represent and recognize objects. This review describes evidence …