Perceptual learning and roving: Stimulus types and overlapping neural populations

In perceptual learning, performance usually improves when observers train with one type of stimulus, for example, a bisection stimulus. Roving denotes the situation when, instead of one, two or more types of stimuli are presented randomly interleaved, for example, a bisection stimulus and a vernier. For some combinations of stimulus types, performance improves in roving situations whereas for others it does not. To investigate when roving impedes perceptual learning, we conducted four experiments. Performance improved, for example, when we roved a bisection stimulus and a vernier but not when we roved certain types of bisection stimuli. We propose that roving hinders perceptual learning when the stimulus types are clearly distinct from each other but still excite overlapping but not identical neural populations.


Published in:
Vision research, 49, 11, 1420-7
Year:
2009
Publisher:
Elsevier
ISSN:
1878-5646
Keywords:
Laboratories:




 Record created 2010-03-23, last modified 2018-01-28


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