1. Integration of orientation information in amblyopia
- Author
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Steven C. Dakin, Behzad Mansouri, Robert F. Hess, Harriet A. Allen, and Oliver Ehrt
- Subjects
Adult ,Integration ,Amblyopia ,050105 experimental psychology ,03 medical and health sciences ,0302 clinical medicine ,Optics ,Discrimination, Psychological ,Orientation ,Psychophysics ,Strabismic amblyopia ,Humans ,0501 psychology and cognitive sciences ,business.industry ,Orientation (computer vision) ,05 social sciences ,Internal noise ,Vernier acuity ,Pattern recognition ,Middle Aged ,Sensory Systems ,Ophthalmology ,Differential threshold ,Sensory Thresholds ,Space Perception ,Artificial intelligence ,Psychology ,business ,030217 neurology & neurosurgery ,Photic Stimulation - Abstract
A recent report suggests that amblyopes are deficient in processing local orientation at supra-threshold contrasts. To determine whether amblyopes are also poor at integrating local orientation signals, we assessed performance for an orientation integration task in which the orientations of static signals are integrated across space. Our results show that amblyopic visual systems can integrate local static oriented signals with the same level of efficiency as normal visual systems. Although internal noise was slightly elevated, there was no indication that fewer samples were used to achieve optimal performance. This finding suggests normal integration of local orientation signals in amblyopia.
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