Research Topics
| G E LeggeSummaryAffiliation: University of Minnesota Country: USA Publications
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Detail Information
Publications
Psychophysics of reading. XX. Linking letter recognition to reading speed in central and peripheral visionG E Legge
Minnesota Laboratory for Low Vision Research, University of Minnesota, 75 East River Rd, Minneapolis, MN 55455, USA
Vision Res 41:725-43. 2001..We conclude that spatiotemporal characteristics of the visual span limit RSVP reading speed in central vision, and that shrinkage of the visual span results in slower reading in peripheral vision...- Mr. Chips: an ideal-observer model of readingG E Legge
Department of Psychology, University of Minnesota, Minneapolis 55455, USA
Psychol Rev 104:524-53. 1997..For example, Mr. Chips sometimes plans a saccade that places a decisive letter in a scotoma. This article provides the first quantitative model of the effects of scotomas on reading... - Psychophysics of reading--XVI. The visual span in normal and low visionG E Legge
Department of Psychology, University of Minnesota, Minneapolis 55455, USA
Vision Res 37:1999-2010. 1997..RSVP measurements for six out of seven low-vision subjects revealed a strong dependence of reading time on word length, as expected from reduced visual spans... - Psychophysics of reading. XVIII. The effect of print size on reading speed in normal peripheral visionS T Chung
Minnesota Laboratory for Low Vision Research, Department of Psychology, University of Minnesota, Minneapolis 55455, USA
Vision Res 38:2949-62. 1998.... - Reading with a head-mounted video magnifierA Ortiz
Department of Psychology, University of Minnesota, Minneapolis 55455, USA
Optom Vis Sci 76:755-63. 1999..This study compared the effectiveness of a head-mounted video magnifier, low-vision enhancement system (LVES), with closed-circuit TV (CCTV) and large print as a device or means of improving reading performance in people with low vision... - The effect of contrast on reading speed in dyslexiaB A O'Brien
Department of Psychology, University of Minnesota, Minneapolis, MN, USA
Vision Res 40:1921-35. 2000..We conclude that earlier findings of group differences in contrast effects on grating detection or visual search tasks do not generalize to reading... 
Retention of high tactile acuity throughout the life span in blindnessGordon E Legge
Minnesota Laboratory for Low Vision Research, Department of Psychology, University of Minnesota, Minneapolis, Minnesota 55455, USA
Percept Psychophys 70:1471-88. 2008..We propose that blind people's use of active touch in daily activities, not specifically braille reading, results in preservation of tactile acuity across the life span...- Lost in virtual space: studies in human and ideal spatial navigationBrian J Stankiewicz
Department of Psychology, University of Texas, Austin, TX 78712 0187, USA
J Exp Psychol Hum Percept Perform 32:688-704. 2006..The authors investigated whether this reduction in navigation efficiency was due to visual perception (Experiment 2), memory, spatial updating strategy, or decision strategy (Experiment 3)... - The case for the visual span as a sensory bottleneck in readingGordon E Legge
University of Minnesota, 75 East River Road, Minneapolis, MN 55455, USA
J Vis 7:9.1-15. 2007..Evidence for the visual span as a determinant of reading speed implies the existence of a bottom-up, sensory limitation on reading, distinct from attentional, motor, or linguistic influences... - Variability in stepping direction explains the veering behavior of blind walkersChristopher S Kallie
Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
J Exp Psychol Hum Percept Perform 33:183-200. 2007.... - Relationship between slow visual processing and reading speed in people with macular degenerationAllen M Y Cheong
Minnesota Laboratory for Low Vision Research, University of Minnesota, Minneapolis, MN 55455, USA
Vision Res 47:2943-55. 2007..We hypothesized that slower temporal processing of visual patterns in peripheral vision is a factor contributing to slow reading performance in MD patients... - Visual accessibility of ramps and stepsGordon E Legge
Minnesota Laboratory for Low Vision Research, Department of Psychology, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
J Vis 10:8. 2010..Cues associated with the height in the picture plane of the targets were more robust... - Relationship between visual span and reading performance in age-related macular degenerationAllen M Y Cheong
Minnesota Laboratory for Low Vision Research, University of Minnesota, Department of Psychology, 75 East River Road, N218 Elliott Hall, Minneapolis, MN 55455, USA
Vision Res 48:577-88. 2008..Vision Research, 47, 2943-2965]. We measured the visual-span profiles of AMD subjects and assessed the relationship of the spatial and temporal properties of these profiles to reading speed... - Functional and cortical adaptations to central vision lossSing hang Cheung
Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
Vis Neurosci 22:187-201. 2005..The purpose of this review is to summarize key findings on both the clinical and neuroscience issues related to questions about visual adaptation in AMD patients... - Learning building layouts with non-geometric visual information: the effects of visual impairment and ageAmy A Kalia
Department of Psychology, University of Minnesota Twin Cities, N218 Elliott Hall, 75 East River Road, Minneapolis, MN 55455, USA
Perception 37:1677-99. 2008..In conclusion, visual impairment and age may result in reduced perceptual and/or memory processing that makes it difficult to learn layouts without non-geometric visual information... - Is word recognition different in central and peripheral vision?Hye Won Lee
Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, MN 55455, USA
Vision Res 43:2837-46. 2003..We conclude that lexical processing is slower in peripheral vision, but the quality of lexical processing is similar in central and peripheral vision... - Preneural limitations on letter identification in central and peripheral visionPaul J Beckmann
Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, Minnesota, 55455, USA
J Opt Soc Am A Opt Image Sci Vis 19:2349-62. 2002..The increasing performance gap between human and ideal-observer performance with eccentricity implicates an increasing role of neural limitations with eccentricity in limiting human letter identification... - Mr. Chips 2002: new insights from an ideal-observer model of readingGordon E Legge
Minnesota Laboratory for Low Vision Research, Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, MN55455, USA
Vision Res 42:2219-234. 2002..Overall, our findings show that many of the complicated aspects of human reading saccades can be explained concisely by early information-processing constraints... - Adaptive changes in visual cortex following prolonged contrast reductionMiYoung Kwon
Department of Psychology, University of Minnesota, Minneapolis, MN, USA
J Vis 9:20.1-16. 2009..The adaptation appears to be compensatory, such that the precision of contrast coding is improved for low retinal-image contrasts... - Do image descriptions underlie word recognition in reading?Gordon E Legge
University of Minnesota, Minneapolis, Minnesota 55455, USA
Br J Psychol 101:33-9; author reply 41-6. 2010..This article is a commentary on 'The utility of image descriptions in the initial stages of vision: A case study of printed text' (Watt & Dakin, 2010)... - Incomplete cortical reorganization in macular degenerationTingting Liu
Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
Invest Ophthalmol Vis Sci 51:6826-34. 2010..from other retinal loci at the same eccentricity? What effect does the role of age of onset and etiology of MD have on cortical responses? How do functional responses in an MD subject's visual cortex vary for task and stimulus conditions?.. - Effect of letter spacing on visual span and reading speedDeyue Yu
University of Minnesota, Minneapolis, MN 55455, USA
J Vis 7:2.1-10. 2007..These results are consistent with the view that the size of the visual span is a primary visual factor that limits reading speed... - Psychophysics of reading--XIV. The page navigation problem in using magnifiersP J Beckmann
Minnesota Laboratory for Low Vision Research, Department of Psychology, University of Minnesota, Minneapolis 55455 0344, USA
Vision Res 36:3723-33. 1996..The difference was more than a factor of three for normal-vision subjects and close to a factor of two for low-vision subjects (10 characters for CCTV vs 5.2 characters for drifting-text for 85% of maximum reading speed... - Low-vision reading speed: influences of linguistic inference and agingSarah M Sass
Department of Psychology, University of Minnesota, Minneapolis, Minnesota, USA
Optom Vis Sci 83:166-77. 2006..CONCLUSIONS: People with low vision appear to rely more on spacing information in sentences, whereas people with normal vision appear to make better use of sentence context, irrespective of age... - Invariant recognition of natural objects in the presence of shadowsW L Braje
Department of Psychology, Plattsburgh State University, NY 12901, USA
Perception 29:383-98. 2000..These studies show that recognition of natural objects is highly invariant to the complex luminance patterns caused by shadows... - Wayfinding with words: spatial learning and navigation using dynamically updated verbal descriptionsNicholas A Giudice
Department of Psychology, University of California, Office Bldg 551, Room 2226, Santa Barbara, CA 93106 9660, USA
Psychol Res 71:347-58. 2007..However, the model performed more like human participants after adding a constraint that biased it against reversing direction... 
Nonlinear mixed-effects modeling of MNREAD dataSing hang Cheung
Department of Psychology, The University of Hong Kong, Hong Kong SAR, China
Invest Ophthalmol Vis Sci 49:828-35. 2008..The authors demonstrate the application of NLME by analyzing data from the MNREAD, a continuous-text reading-acuity chart...- Letter-recognition and reading speed in peripheral vision benefit from perceptual learningSusana T L Chung
College of Optometry, University of Houston, 505 J D Armistead Bldg, Houston, TX 77204 2020, USA
Vision Res 44:695-709. 2004..Our results are consistent with the view that the visual span is a bottleneck on reading speed, but a bottleneck that can be increased with practice... - Spatial-frequency characteristics of letter identification in central and peripheral visionSusana T L Chung
College of Optometry, University of Houston, Houston, TX 77204, USA
Vision Res 42:2137-152. 2002.... - Spatial-frequency properties of letter identification in amblyopiaSusana T L Chung
School of Optometry, Indiana University, Bloomington, IN 47405, USA
Vision Res 42:1571-81. 2002..Rather, it is a consequence of the difference in the resolution limit between the amblyopic and the non-amblyopic eyes...