V. Sundareswaran

Learn More
The effects of practice on the discrimination of direction of motion in briefly presented noisy dynamic random dot patterns are investigated in several forced-choice psychophysical tasks. We found that the percentage of correct responses on any specific task increases linearly with repetition of trials within roughly 200 trials from about chance to a(More)
Perceptual learning is defined as fast improvement in performance and retention of the learned ability over a period of time. In a set of psy-chophysical experiments we demonstrated that perceptual learning occurs for the discrimination of direction in stochastic motion stimuli. Here we model this learning using two approaches: a clustering model that(More)
In a previous study, we found that subjects' performance in a task of direction discrimination in stochastic motion stimuli shows fast improvement in the absence of feedback and the learned ability is retained over a period of time. We model this learning using two unsupervised approaches: a clustering model that learns to accommodate the motion noise, and(More)
Using an inexpensive headphone-based 3-D sound display, sound localization accuracy was assessed for six listeners, before, during, and after a perceptual feedback training procedure which provided listeners with paired auditory/visual feedback as to the correct sound source position. We show that feedback training markedly improved localization accuracy,(More)
  • 1