Can contrast sensitivity functions in dyslexia be explained by inattention rather than a magnocellular deficit? Export

@article{citeulike:3001271, abstract = {We examined whether data demonstrating contrast sensitivity losses in dyslexia that have been interpreted as evidence for loss of magnocellular visual function could be explained by inattention. Computer simulations of observers with poor concentration yielded inflated estimates of threshold that were a constant proportion of the true threshold across spatial frequencies. Data from many, but not all, studies supporting the magnocellular deficit theory are well described by these simulations, which predicted no interaction between observer group and spatial frequency. Some studies have reported significant interactions, but suffer from statistical deficiencies. This compromises some of the evidence for a magnocellular deficit in dyslexia derived from studies of threshold contrast sensitivity.}, author = {Stuart, Geoffrey W. and Mcanally, Ken I. and Castles, Anne}, citeulike-article-id = {3001271}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/S0042-6989(01)00176-6}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6T0W-44D2HXM-D/1/d718bd9205837d4d8cf82c326d5fa1bd}, doi = {10.1016/S0042-6989(01)00176-6}, journal = {Vision Research}, keywords = {attention, contrast, dyslexia, magno, magnocellular, sensitivity}, month = {November}, number = {24}, pages = {3205--3211}, posted-at = {2008-07-15 08:19:10}, priority = {2}, title = {Can contrast sensitivity functions in dyslexia be explained by inattention rather than a magnocellular deficit?}, url = {http://dx.doi.org/10.1016/S0042-6989(01)00176-6}, volume = {41}, year = {2001} }

TY - JOUR ID - citeulike:3001271 L3 - citeulike-article-id:3001271 N2 - We examined whether data demonstrating contrast sensitivity losses in dyslexia that have been interpreted as evidence for loss of magnocellular visual function could be explained by inattention. Computer simulations of observers with poor concentration yielded inflated estimates of threshold that were a constant proportion of the true threshold across spatial frequencies. Data from many, but not all, studies supporting the magnocellular deficit theory are well described by these simulations, which predicted no interaction between observer group and spatial frequency. Some studies have reported significant interactions, but suffer from statistical deficiencies. This compromises some of the evidence for a magnocellular deficit in dyslexia derived from studies of threshold contrast sensitivity. IS - 24 JF - Vision Research EP - 3211 TI - Can contrast sensitivity functions in dyslexia be explained by inattention rather than a magnocellular deficit? VL - 41 SP - 3205 KW - attention KW - contrast KW - dyslexia KW - magno KW - magnocellular KW - sensitivity AU - Stuart, Geoffrey AU - Mcanally, Ken AU - Castles, Anne PY - 2001/11// UR - http://dx.doi.org/10.1016/S0042-6989(01)00176-6 ER -