Research Topics
| DENIS PELLISummaryAffiliation: New York University Country: USA Publications
Research Grants
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Detail Information
Publications
Theories of reading should predict reading speedDenis G Pelli
Department of Psychology and Center for Neural Science, New York University, New York, NY 10003
Behav Brain Sci 35:297-8. 2012..Reading speed matters in most real-world contexts, and it is a robust and easy aspect of reading to measure. Theories of reading should account for speed...- Grouping in object recognition: the role of a Gestalt law in letter identificationDenis G Pelli
Psychology and Neural Science, New York University, New York, NY 10003, USA mail
Cogn Neuropsychol 26:36-49. 2009..This shows that letter identification obeys the Gestalt law of good continuation and may be the first confirmation of the original Gestalt claim that object recognition involves grouping... 
Crowding: a cortical constraint on object recognitionDenis G Pelli
Psychology and Neural Science, New York University, New York, NY 10003, USA
Curr Opin Neurobiol 18:445-51. 2008..Furthermore, we show that much of this can be accounted for by supposing that each 'combining field', defined by the critical spacing measurements, is implemented by a fixed number of cortical neurons...- The uncrowded window of object recognitionDenis G Pelli
Department of Psychology and Center for Neural Science, New York University, 6 Washington Place, New York, New York 10003, USA
Nat Neurosci 11:1129-35. 2008..The region where object spacing exceeds critical spacing is the 'uncrowded window'. Observers cannot recognize objects outside of this window and its size limits the speed of reading and search... - Crowding and eccentricity determine reading rateDenis G Pelli
Psychology and Neural Science, New York University, New York, NY, USA
J Vis 7:20.1-36. 2007..In all conditions tested--all sizes and spacings, central and peripheral, ordered and scrambled--reading is limited by crowding. For each observer, at each vertical eccentricity, reading rate is proportional to the uncrowded span... - Parts, wholes, and context in reading: a triple dissociationDenis G Pelli
Psychology and Neural Science, New York University, New York, New York, United States of America
PLoS ONE 2:e680. 2007..Surprisingly, the effects of the knockouts on reading rate reveal a triple dissociation. Each reading process always contributes the same number of words per minute, regardless of whether the other processes are operating... 
Feature detection and letter identificationDenis G Pelli
Institute for Sensory Research, Syracuse University, Syracuse, New York, NY 13210, USA
Vision Res 46:4646-74. 2006..This, and the surprisingly fixed ratio of detection and identification thresholds, indicate that identifying a letter is mediated by detection of about 7 visual features...- Crowding is unlike ordinary masking: distinguishing feature integration from detectionDenis G Pelli
Psychology and Neural Science, New York University, New York, NY, USA
J Vis 4:1136-69. 2004..The rest seem to arise through a distinct phenomenon that one might call "temporal crowding," which depends on time pressure ("overloading attention"), independent of spatial proximity... - Using visual noise to characterize amblyopic letter identificationDenis G Pelli
Psychology and Neural Science, New York University, New York, NY, USA
J Vis 4:904-20. 2004..Finally, based on these results, we introduce a new "Dual Acuity" chart that promises to be a quick diagnostic test for amblyopia... - The remarkable inefficiency of word recognitionDenis G Pelli
Psychology and Neural Science, New York University, New York, New York 10003, USA
Nature 423:752-6. 2003.... - The role of spatial frequency channels in letter identificationNajib J Majaj
Psychology and Neural Science, New York University, 6 Washington Place, New York, NY 10003, USA
Vision Res 42:1165-84. 2002..Thus, large letters (and coarse squarewaves) are identified by their edges; small letters (and fine squarewaves) are identified by their gross strokes... - Are faces processed like words? A diagnostic test for recognition by partsMarialuisa Martelli
Psychology and Neural Science, New York University, New York, NY, USA
J Vis 5:58-70. 2005..Words and faces are both recognized by parts, and their parts -- letters and facial features -- are recognized holistically. We propose that internal crowding be taken as the signature of recognition by parts... - Covert attention enhances letter identification without affecting channel tuningCigdem P Talgar
Department of Psychology, New York University, New York, NY, USA
J Vis 4:22-31. 2004..We find that directing attention to the target location halves threshold energy without affecting the channel's spatial frequency tuning... - Flicker flutter: is an illusory event as good as the real thing?Tracey D Berger
Psychology and Neural Science, New York University, New York, NY, USA
J Vis 3:406-12. 2003..Thus the unit of perceptual analysis seems to be a perceived event, independent of how it is induced... - An escape from crowdingJeremy Freeman
Swarthmore College, Swarthmore, PA, USA
J Vis 7:22.1-14. 2007.... - Amblyopic reading is crowdedDennis M Levi
School of Optometry and Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, CA 94720 2020, USA
J Vis 7:21.1-17. 2007..The uncrowded-span model of normal reading fits the amblyopic results well, with a roughly fivefold increase in the critical spacing at fixation. Thus, the entire amblyopic reading deficit is accounted for by crowding... - Noise masking reveals channels for second-order lettersIpek Oruc
Department of Psychology, University of British Columbia, 3008 2136 West Mall, Vancouver, BC, Canada V6T 1Z4
Vision Res 46:1493-506. 2006..Unlike the nonlinear dependence found for first-order letters (implying scale-dependent processing), for second-order letters the channel frequency is half the letter texture stroke frequency (suggesting scale-invariant processing)...
Research Grants
- TRANSMISSION OF INFORMATION IN VISUAL SYSTEMDENIS PELLI; Fiscal Year: 2001....
- TRANSMISSION OF INFORMATION IN THE VISUAL SYSTEMDENIS PELLI; Fiscal Year: 2007..Thus techniques from cognition, perception, statistical learning theory, and physiology together will reveal what is computed where, in the brain, when an observer identifies an object. ..
- TRANSMISSION OF INFORMATION IN THE VISUAL SYSTEMDenis G Pelli; Fiscal Year: 2010..Thus techniques from cognition, perception, statistical learning theory, and physiology together will reveal what is computed where, in the brain, when an observer identifies an object. ..