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bibliographie de Mars 2008Broad bandwidth of perceptual
learning in the visual system of adults with anisometropic amblyopia
(Large bande passante d'apprentissage perceptif
dans le système visuel d'adultes amblyopes par anisométropie)
Huang CB, Zhou Y, Lu ZL.
Vision Research Laboratory, School of Life Sciences, University of Science and
Technology of China, Hefei, Anhui 230027, China
SUMMARY:
Recent studies have demonstrated that training adult amblyopes in simple visual
tasks leads to significant improvements of their spatial vision. One critical
question is: How much can training with one particular stimulus and task
generalize to other stimuli and tasks? In this study, we estimated the bandwidth
of perceptual learning in teenage and adult observers with anisometropic
amblyopia and compared it to that of normal observers. We measured and compared
contrast sensitivity functions-i.e., sensitivity to sine-wave gratings of
various spatial frequencies-before and after training at a single spatial
frequency in teenagers and adults with and without amblyopia. We found that the
bandwidth of perceptual learning in the amblyopic visual system is much broader
than that of the normal visual system. The broader bandwidth, suggesting more
plasticity and wider generalization in the amblyopic visual system, provides a
strong empirical and theoretical basis for perceptual learning as a potential
treatment for amblyopia.
Retour à la
bibliographie de Mars 2008
(Dernière mise à jour de cette page le 26/04/08)