Vernier acuity and the magnocellular system revisited: Response to Skottun and Skoyles

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Abstract

Skottun and Skoyles (2009) recently presented a comment on Vernier acuity and magnocellular dysfunctions in fragile X premutation carriers (Kéri & Benedek, 2009). The authors concluded that our finding that the magnocellular deficit, as revealed by luminance-contrast sensitivity measurements, is associated with impaired Vernier acuity for achromatic gratings does not mean that this procedure is suitable for the investigation of the magnocellular pathways, given that deficits outside the magnocellular system also lead to impaired Vernier acuity. However, Skottun and Skoyles (2009) did not consider the dissociation between achromatic and isoluminant color Vernier and the convergence of Vernier and luminance-contrast sensitivity measurements.

Original languageEnglish
Pages (from-to)167-168
Number of pages2
JournalBrain and Cognition
Volume72
Issue number2
DOIs
Publication statusPublished - Mar 1 2010

Keywords

  • Fragile X
  • Genetics
  • Magnocellular
  • Premutation
  • Vision

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience

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