Contrast sensitivity and magnocellular functioning in schizophrenia
نویسندگان
چکیده
منابع مشابه
Contrast sensitivity and magnocellular functioning in schizophrenia
It has been suggested that schizophrenia is associated with a magnocellular deficit. This would predict a loss of contrast sensitivity at low spatial and/or at high temporal frequencies. We here review research that tested contrast sensitivity in individuals with schizophrenia. We find that the results of this research tend to show uniform reductions in contrast sensitivity that are generally n...
متن کاملThe magnocellular pathway and schizophrenia
The magnocellular pathway and schizophrenia q I read with great interest the recent review of Skottun and Skoyles (2007) on contrast sensitivity and magnocellu-lar functions in schizophrenia. The authors critically reviewed available contrast sensitivity studies and concluded that these data do not provide evidence for the existence of an association between magnocellular deficits and schizophr...
متن کاملAnisometropic amblyopia: spatial contrast sensitivity deficits in inferred magnocellular and parvocellular vision.
PURPOSE To measure achromatic spatial contrast sensitivity in patients with anisometropic amblyopia under conditions favoring inferred parvocellular (PC) or magnocellular (MC) pathway mediation. METHODS Fourteen anisometropic amblyopes (VA amblyopic eye 6/12 or lower; better eye greater than 6/7.5) and 10 age-matched, nonamplyopic controls (VA 6/6) participated. Foveal spatial contrast sensit...
متن کاملCan contrast sensitivity functions in dyslexia be explained by inattention rather than a magnocellular deficit?
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 no...
متن کاملLuminance noise as a novel approach for measuring contrast sensitivity within the magnocellular and parvocellular pathways
This study evaluated the extent to which different types of luminance noise can be used to target selectively the inferred magnocellular (MC) and parvocellular (PC) visual pathways. Letter contrast sensitivity (CS) was measured for three visually normal subjects for letters of different size (0.8°-5.3°) under established paradigms intended to target the MC pathway (steady-pedestal paradigm) and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Vision Research
سال: 2007
ISSN: 0042-6989
DOI: 10.1016/j.visres.2007.07.016