ERIC Number: EJ871755
Record Type: Journal
Publication Date: 2010-Mar
Abstractor: As Provided
Reference Count: 0
On Using Vernier Acuity to Assess Magnocellular Sensitivity
Skottun, Bernt C.; Skoyles, John R.
Brain and Cognition, v72 n2 p165-166 Mar 2010
A recent study [Keri, S., & Benedek, G. (2009). Visual pathway deficit in female fragile x premutation carriers: A potential endophenotype. "Brain and Cognition", 69, 291-295] has found Vernier acuity deficiencies together with contrast sensitivity defects consistent with a magnocellular deficit in female fragile x premutation carriers. This may appear to support the notion that Vernier acuity may serve as a test of magnocellular sensitivity. However, Vernier acuity deficiencies have been reported in other conditions (e.g., schizophrenia, amblyopia and cortical visual impairment) where there is little evidence for magnocellular deficits. The observation that Vernier acuity deficiencies can occur without magnocellular deficits indicates that Vernier acuity is not a reliable test of magnocellular sensitivity.
Descriptors: Visual Impairments, Schizophrenia, Brain, Cytology, Visual Perception, Females, Genetics, Color, Evaluation Methods
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A