We have submitted an abstract for the Vision Sciences Society Meeting in Sarasota, Florida this May. The abstract highlights the colour-memory patient, QP, that Loni has been investigating.
Colour-Specific Deficits in Implicit Colour Working Memory: A Visuomotor Case Study
Loni Rhode1,2, Lee A Baugh1,2, Pauline M Pearson3, Lorna S Jakobson2, Jonathan J Marotta1,2
1Neuropsychology of Vision Perception and Action Lab
2Department of Psychology, University of Manitoba
3Department of Psychology, Univeristy of Winnipeg
Previous research has demonstrated that grasping can be altered through implicitly established colour-size associations (Haffenden & Goodale, 2000). After training with “large” red and “small” blue blocks, subjects open their hands wider when grasping “medium” blue probe blocks than when grasping identically sized red blocks. We examined whether QP, an individual who has a selective deficit in explicit colour working memory, demonstrates an influence of colour-size associations on grip aperture. Results from 13 right-handed control participants revealed that grip aperture was significantly wider for the blue probe block than for the red probe block (difference of 2.46 mm, p<.05 as with the controls qp also increases her grip aperture for blue block mm to explore whether colour-size associations generalize within a colour category light and red probe blocks that were not part of training phase added test phase. in differences between observed. contrast shows difference compared these visuomotor findings suggest memory deficits affect implicit influence color on visually guided grasping normally does categories. consistent difficulty recalling specific shades do exhibit normal specificity.>
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