Journal
VISION RESEARCH
Volume 48, Issue 13, Pages 1471-1478Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2008.03.019
Keywords
fragile X syndrome; contrast detection; second-order; motion; threshold; forced-choice preferential looking
Categories
Funding
- NEI NIH HHS [R01 EY018216, R01 EY018216-02] Funding Source: Medline
- NICHD NIH HHS [R01 HD036071, R01 HD036071-08, R01 HD056031, R01 HD056031-02, HD02274, HD36071, R01 HD056031-01, P30 HD002274] Funding Source: Medline
Ask authors/readers for more resources
Studies have reported that a selective deficit in visual motion processing is present in certain developmental disorders, including Williams syndrome and autism. More recent evidence suggests a visual motion impairment is also present in adults with fragile X syndrome (FXS), the most common form of inherited mental retardation. The goal of the current study was to examine low-level cortical visual processing in infants diagnosed with FXS in order to explore the developmental origin of this putative deficit. We measured contrast detection of first-order (luminance-defined) and second-order (contra st-cle fined) gratings at two levels of temporal frequency, 0 Hz (static) and 4 Hz (moving). Results indicate that infants with FXS display significantly higher detection thresholds only for the second-order, moving stimuli compared to mental age-matched typically developing controls. (c) 2008 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available