Discrimination of position and contrast in amblyopic and peripheral vision
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Cited by (59)
Frontal cortical regions associated with attention connect more strongly to central than peripheral V1
2021, NeuroImageCitation Excerpt :Peripheral vision has lower acuity but is essential for visual tasks such as visual search and getting the gist of a scene (Larson and Loschky, 2009; Rosenholtz, 2016; Trouilloud et al., 2020). Differences in acuity between peripheral and central vision alone do not provide a full explanation of the extent of disparity in visual ability (Levi et al., 1985; Levi et al., 1984). Information processing of central and peripheral visual information also differs.
Discrimination of natural scenes in central and peripheral vision
2011, Vision ResearchCitation Excerpt :However, the representation of foveal vision in V1 seems to be grossly over-magnified compared to receptive-field size or measures of acuity (Azzopardi & Cowey, 1993; Tolhurst, 1989; van Essen et al., 1984). Differences in spatial scaling between peripheral and central vision alone do not explain the full extent of changes in visual ability with eccentricity – performance for different tasks falls off at different rates with eccentricity (Hess & Field, 1993; Levi, Klein, & Aitsebaomo, 1985; Levi, Klein, & Wang, 1994). Furthermore, targets in peripheral vision but not foveal vision are subject to “crowding” – the phenomenon where targets become more difficult to recognise (rather than to detect) when surrounded by other flanker or distractor stimuli (Bouma, 1970, see also reviews by Levi (2008) and Pelli (2008).
Contrast masking in strabismic amblyopia: Attenuation, noise, interocular suppression and binocular summation
2008, Vision ResearchCitation Excerpt :All of these monocular results are consistent with those for AV6 here. In the three amblyopes of Levi, Klein, and Wang (1994), there was very little difference between the masking functions in the good and bad eyes when plotted on normalised axes, though facilitation (the ‘dip’) was either absent or shallow in each eye. A recent study by Levi et al. (2007) measured monocular contrast discrimination for noise in each eye in ten amblyopic observers (six of whom were strabismic).
The response of the amblyopic visual system to noise
2007, Vision ResearchChapter 9 Psychophysical techniques
2005, Handbook of Clinical Neurophysiology
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Present address: School of Optometry, University of California at Berkeley, Berkeley, CA 94720, U.S.A.