Abstract：
:Morrone et al. [Morrone, M. C., Denti, V., & Spinelli, D. (2002). Color and luminance contrasts attract independent attention. Current Biology, 12, 1134-1137] reported that the detrimental effect on contrast discrimination thresholds of performing a concomitant task is modality specific: performing a secondary luminance task has no effect on colour contrast thresholds, and vice versa. Here we confirm this result with a novel task involving learning of spatial position, and go on to show that it is not specific to the cardinal colour axes: secondary tasks with red-green stimuli impede performance on a blue-yellow task and vice versa. We further show that the attentional effect can be abolished with continued training over 2-4 training days (2-20 training sessions), and that the effect of learning is transferable to new target positions. Given the finding of transference, we discuss the possibility that V4 is a site of plasticity for both stimulus types, and that the separation is due to a luminance-colour separation within this cortical area.
journal_name
Vision Resjournal_title
Vision researchauthors
Chirimuuta M,Burr D,Morrone MCdoi
10.1016/j.visres.2006.09.002subject
Has Abstractpub_date
2007-01-01 00:00:00pages
60-70issue
1eissn
0042-6989issn
1878-5646pii
S0042-6989(06)00411-1journal_volume
47pub_type
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