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Peter Bex, Ph.D.

TitleAssociate Professor of Ophthalmology
InstitutionSchepens Eye Research Institute
DepartmentOphthalmology
AddressMassachusetts Eye & Ear Infirmary
20 Staniford St
Boston MA 02114
Phone617/912-2528

 Bibliographic 
 selected publications
Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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  1. Wallis TS, Taylor CP, Wallis J, Jackson ML, Bex PJ. Characterization of field loss based on microperimetry is predictive of face recognition difficulties. Invest Ophthalmol Vis Sci. 2014; 55(1):142-53.
    View in: PubMed
  2. Jackson ML, Bex PJ, Ellison JM, Wicks P, Wallis J. Feasibility of a web-based survey of hallucinations and assessment of visual function in patients with Parkinson's disease. Interact J Med Res. 2014; 3(1):e1.
    View in: PubMed
  3. Dorr M, Lesmes LA, Lu ZL, Bex PJ. Rapid and Reliable Assessment of the Contrast Sensitivity Function on an iPad. Invest Ophthalmol Vis Sci. 2013; 54(12):7266-73.
    View in: PubMed
  4. Elze T, Taylor C, Bex PJ. An evaluation of organic light emitting diode monitors for medical applications: Great timing, but luminance artifacts. Med Phys. 2013 Sep; 40(9):092701.
    View in: PubMed
  5. Bogfjellmo LG, Bex PJ, Falkenberg HK. Reduction in direction discrimination with age and slow speed is due to both increased internal noise and reduced sampling efficiency. Invest Ophthalmol Vis Sci. 2013; 54(8):5204-10.
    View in: PubMed
  6. Saunders DR, Bex PJ, Woods RL. Crowdsourcing a normative natural language dataset: a comparison of Amazon mechanical turk and in-lab data collection. J Med Internet Res. 2013; 15(5):e100.
    View in: PubMed
  7. Pelli DG, Bex P. Measuring contrast sensitivity. Vision Res. 2013 Sep 20; 90:10-4.
    View in: PubMed
  8. Dorr M, Bex PJ. Peri-saccadic natural vision. J Neurosci. 2013 Jan 16; 33(3):1211-7.
    View in: PubMed
  9. Greenwood JA, Tailor VK, Sloper JJ, Simmers AJ, Bex PJ, Dakin SC. Visual Acuity, Crowding, and Stereo-Vision Are Linked in Children with and without Amblyopia. Invest Ophthalmol Vis Sci. 2012 Dec; 53(12):7655-65.
    View in: PubMed
  10. Cass J, Johnson A, Bex PJ, Alais D. Orientation-specificity of adaptation: isotropic adaptation is purely monocular. PLoS One. 2012; 7(11):e47425.
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  11. Wiecek E, Pasquale LR, Fiser J, Dakin S, Bex PJ. Effects of peripheral visual field loss on eye movements during visual search. Front Psychol. 2012; 3:472.
    View in: PubMed
  12. Wiecek E, Jackson ML, Dakin SC, Bex P. Visual search with image modification in age-related macular degeneration. Invest Ophthalmol Vis Sci. 2012 Oct; 53(10):6600-9.
    View in: PubMed
  13. McIlreavy L, Fiser J, Bex PJ. Impact of simulated central scotomas on visual search in natural scenes. Optom Vis Sci. 2012 Sep; 89(9):1385-94.
    View in: PubMed
  14. Wallis TS, Bex PJ. Image correlates of crowding in natural scenes. J Vis. 2012; 12(7).
    View in: PubMed
  15. Wardle SG, Bex PJ, Cass J, Alais D. Stereoacuity in the periphery is limited by internal noise. J Vis. 2012; 12(6):12.
    View in: PubMed
  16. Greenwood JA, Bex PJ, Dakin SC. Crowding follows the binding of relative position and orientation. J Vis. 2012; 12(3).
    View in: PubMed
  17. Dakin SC, Greenwood JA, Carlson TA, Bex PJ. Crowding is tuned for perceived (not physical) location. J Vis. 2011; 11(9).
    View in: PubMed
  18. Kane D, Bex P, Dakin S. Quantifying "the aperture problem" for judgments of motion direction in natural scenes. J Vis. 2011; 11(3).
    View in: PubMed
  19. Wallis TS, Bex PJ. Visual crowding is correlated with awareness. Curr Biol. 2011 Feb 8; 21(3):254-8.
    View in: PubMed
  20. Murray S, Bex PJ. Perceived blur in naturally contoured images depends on phase. Front Psychol. 2010; 1:185.
    View in: PubMed
  21. Dakin SC, Cass J, Greenwood JA, Bex PJ. Probabilistic, positional averaging predicts object-level crowding effects with letter-like stimuli. J Vis. 2010; 10(10):14.
    View in: PubMed
  22. Greenwood JA, Bex PJ, Dakin SC. Crowding changes appearance. Curr Biol. 2010 Mar 23; 20(6):496-501.
    View in: PubMed
  23. Bex PJ. (In) sensitivity to spatial distortion in natural scenes. J Vis. 2010; 10(2):23.1-15.
    View in: PubMed
  24. Cass J, Stuit S, Bex P, Alais D. Orientation bandwidths are invariant across spatiotemporal frequency after isotropic components are removed. J Vis. 2009; 9(12):17.1-14.
    View in: PubMed
  25. Dakin SC, Bex PJ, Cass JR, Watt RJ. Dissociable effects of attention and crowding on orientation averaging. J Vis. 2009; 9(11):28.1-16.
    View in: PubMed
  26. Cass J, Alais D, Spehar B, Bex PJ. Temporal whitening: transient noise perceptually equalizes the 1/f temporal amplitude spectrum. J Vis. 2009; 9(10):12.1-19.
    View in: PubMed
  27. Kane D, Bex PJ, Dakin SC. The aperture problem in contoured stimuli. J Vis. 2009; 9(10):13.1-17.
    View in: PubMed
  28. Bex PJ, Solomon SG, Dakin SC. Contrast sensitivity in natural scenes depends on edge as well as spatial frequency structure. J Vis. 2009; 9(10):1.1-19.
    View in: PubMed
  29. Greenwood JA, Bex PJ, Dakin SC. Positional averaging explains crowding with letter-like stimuli. Proc Natl Acad Sci U S A. 2009 Aug 4; 106(31):13130-5.
    View in: PubMed
  30. Crossland MD, Bex PJ. Spatial alignment over retinal scotomas. Invest Ophthalmol Vis Sci. 2009 Mar; 50(3):1464-9.
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  31. Crossland MD, Bex PJ. The twinkle aftereffect is pre-cortical and is independent of filling-in. J Vis. 2008; 8(11):13.1-10.
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  32. Mareschal I, Bex PJ, Dakin SC. Local motion processing limits fine direction discrimination in the periphery. Vision Res. 2008 Jul; 48(16):1719-25.
    View in: PubMed
  33. Langley K, Bex PJ. Contrast adaptation implies two spatiotemporal channels but three adapting processes. J Exp Psychol Hum Percept Perform. 2007 Dec; 33(6):1283-96.
    View in: PubMed
  34. Crossland MD, Dakin SC, Bex PJ. Illusory stimuli can be used to identify retinal blind spots. PLoS One. 2007; 2(10):e1060.
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  35. Bex PJ, Langley K. The perception of suprathreshold contrast and fast adaptive filtering. J Vis. 2007; 7(12):1.1-23.
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  36. Bex PJ, Mareschal I, Dakin SC. Contrast gain control in natural scenes. J Vis. 2007; 7(11):12.1-12.
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  37. Falkenberg HK, Bex PJ. Sources of motion-sensitivity loss in glaucoma. Invest Ophthalmol Vis Sci. 2007 Jun; 48(6):2913-21.
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  38. Falkenberg HK, Bex PJ. Contextual modulation of the motion aftereffect. J Exp Psychol Hum Percept Perform. 2007 Apr; 33(2):257-70.
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  39. Falkenberg HK, Rubin GS, Bex PJ. Acuity, crowding, reading and fixation stability. Vision Res. 2007 Jan; 47(1):126-35.
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  40. Bex PJ, Falkenberg HK. Resolution of complex motion detectors in the central and peripheral visual field. J Opt Soc Am A Opt Image Sci Vis. 2006 Jul; 23(7):1598-607.
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  41. Mareschal I, Dakin SC, Bex PJ. Dynamic properties of orientation discrimination assessed by using classification images. Proc Natl Acad Sci U S A. 2006 Mar 28; 103(13):5131-6.
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  42. Dakin SC, Mareschal I, Bex PJ. An oblique effect for local motion: psychophysics and natural movie statistics. J Vis. 2005; 5(10):878-87.
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  43. Dakin SC, Mareschal I, Bex PJ. Local and global limitations on direction integration assessed using equivalent noise analysis. Vision Res. 2005 Nov; 45(24):3027-49.
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  44. Bex PJ, Dakin SC, Mareschal I. Critical band masking in optic flow. Network. 2005 Jun-Sep; 16(2-3):261-84.
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  45. Bex PJ, Dakin SC. Spatial interference among moving targets. Vision Res. 2005 May; 45(11):1385-98.
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  46. Simmers AJ, Bex PJ. The representation of global spatial structure in amblyopia. Vision Res. 2004 Mar; 44(5):523-33.
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  47. Bex P. [Insurance for civil responsibility in professional medicine: insurance systems and coverage for posterity]. Bull Soc Belge Ophtalmol. 2004; (291):89-92.
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  48. Bex PJ, Dakin SC, Simmers AJ. The shape and size of crowding for moving targets. Vision Res. 2003 Dec; 43(27):2895-904.
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  49. Dakin SC, Bex PJ. Natural image statistics mediate brightness 'filling in'. Proc Biol Sci. 2003 Nov 22; 270(1531):2341-8.
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  50. Fiser J, Bex PJ, Makous W. Contrast conservation in human vision. Vision Res. 2003 Nov; 43(25):2637-48.
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  51. Bex PJ, Simmers AJ, Dakin SC. Grouping local directional signals into moving contours. Vision Res. 2003 Sep; 43(20):2141-53.
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  52. Hess RF, Pointer JS, Simmers A, Bex P. Border distinctness in amblyopia. Vision Res. 2003 Sep; 43(21):2255-64.
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  53. Simmers AJ, Bex PJ, Hess RF. Perceived blur in amblyopia. Invest Ophthalmol Vis Sci. 2003 Mar; 44(3):1395-400.
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  54. Bex PJ, Dakin SC. Motion detection and the coincidence of structure at high and low spatial frequencies. Vision Res. 2003 Feb; 43(4):371-83.
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  55. Dakin SC, Bex PJ. Summation of concentric orientation structure: seeing the Glass or the window? Vision Res. 2002 Jul; 42(16):2013-20.
    View in: PubMed
  56. Bex PJ, Makous W. Spatial frequency, phase, and the contrast of natural images. J Opt Soc Am A Opt Image Sci Vis. 2002 Jun; 19(6):1096-106.
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  57. Dakin SC, Bex PJ. Role of synchrony in contour binding: some transient doubts sustained. J Opt Soc Am A Opt Image Sci Vis. 2002 Apr; 19(4):678-86.
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  58. Bex PJ, Dakin SC. Comparison of the spatial-frequency selectivity of local and global motion detectors. J Opt Soc Am A Opt Image Sci Vis. 2002 Apr; 19(4):670-7.
    View in: PubMed
  59. Bex PJ, Simmers AJ, Dakin SC. Snakes and ladders: the role of temporal modulation in visual contour integration. Vision Res. 2001 Dec; 41(27):3775-82.
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  60. Simmers AJ, Bex PJ. Deficit of visual contour integration in dyslexia. Invest Ophthalmol Vis Sci. 2001 Oct; 42(11):2737-42.
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  61. Simmers AJ, Bex PJ, Smith FK, Wilkins AJ. Spatiotemporal visual function in tinted lens wearers. Invest Ophthalmol Vis Sci. 2001 Mar; 42(3):879-84.
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  62. Dakin SC, Bex PJ. Local and global visual grouping: tuning for spatial frequency and contrast. J Vis. 2001; 1(2):99-111.
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  63. Bex PJ, Baker CL. Motion perception over long interstimulus intervals. Percept Psychophys. 1999 Aug; 61(6):1066-74.
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  64. Bex PJ, Metha AB, Makous W. Enhanced motion aftereffect for complex motions. Vision Res. 1999 Jun; 39(13):2229-38.
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  65. Bex PJ, Metha AB, Makous W. Psychophysical evidence for a functional hierarchy of motion processing mechanisms. J Opt Soc Am A Opt Image Sci Vis. 1998 Apr; 15(4):769-76.
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  66. Hess RF, Bex PJ, Fredericksen ER, Brady N. Is human motion detection subserved by a single or multiple channel mechanism? Vision Res. 1998 Jan; 38(2):259-66.
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  67. Bex PJ, Makous W. Radial motion looks faster. Vision Res. 1997 Dec; 37(23):3399-405.
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  68. Bex PJ, Baker CL. The effects of distractor elements on direction discrimination in random Gabor kinematograms. Vision Res. 1997 Jul; 37(13):1761-7.
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  69. Brady N, Bex PJ, Fredericksen RE. Independent coding across spatial scales in moving fractal images.. Vision Res. 1997 Jul; 37(14):1873-83.
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  70. Mareschal I, Ashida H, Bex PJ, Nishida S, Verstraten FA. Linking lower and higher stages of motion processing? Vision Res. 1997 Jul; 37(13):1755-9.
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  71. Hess RF, Demanins R, Bex PJ. A reduced motion aftereffect in strabismic amblyopia. Vision Res. 1997 May; 37(10):1303-11.
    View in: PubMed
  72. Fredericksen RE, Bex PJ, Verstraten FA. How big is a Gabor patch, and why should we care? J Opt Soc Am A Opt Image Sci Vis. 1997 Jan; 14(1):1-12.
    View in: PubMed
  73. Bex PJ, Verstraten FA, Mareschal I. Temporal and spatial frequency tuning of the flicker motion aftereffect. Vision Res. 1996 Sep; 36(17):2721-7.
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  74. Hammett ST, Bex PJ. Motion sharpening: evidence for the addition of high spatial frequencies to the effective neural image. Vision Res. 1996 Sep; 36(17):2729-33.
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  75. Bex PJ, Edgar GK. Shifts in the perceived location of a blurred edge increase with contrast. Percept Psychophys. 1996 Jan; 58(1):31-3.
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  76. Bex PJ, Brady N, Fredericksen RE, Hess RF. Energetic motion detection. Nature. 1995 Dec 14; 378(6558):670-2.
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  77. Bex PJ, Edgar GK. Shifts in the perceived location of a blurred edge increase with contrast. Percept Psychophys. 1995 Nov; 57(8):1187-9.
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  78. Bex PJ, Edgar GK, Smith AT. Sharpening of drifting, blurred images. Vision Res. 1995 Sep; 35(18):2539-46.
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  79. Hofmeyr GJ, Gobetz L, Bex PJ, Van der Griendt M, Nikodem C, Skapinker R, Delahunt T. Periventricular/intraventricular hemorrhage following early and delayed umbilical cord clamping. A randomized controlled trial. Online J Curr Clin Trials. 1993 Dec 29; Doc No 110:[2002 words; 26 paragraphs].
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  80. Hammond KD, Bex P, Mohamed E, Levy N. Phosphoamino acid phosphatases in normal and cancerous tissues of the human uterus, cervix and ovary. Arch Int Physiol Biochim Biophys. 1992 Jan-Feb; 100(1):105-7.
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  81. Frohlich EP, Bex P, Nissenbaum MM, Epstein BM, Sonnendecker EW. Comparison between renal ultrasonography and excretory urography in cervical cancer. Int J Gynaecol Obstet. 1991 Jan; 34(1):49-54.
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  82. Hofmeyr GJ, Bex PJ, Skapinker R, Delahunt T. Hasty clamping of the umbilical cord may initiate neonatal intraventricular hemorrhage. Med Hypotheses. 1989 May; 29(1):5-6.
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  83. Bex PJ, Hofmeyr GJ. Perineal management during childbirth and subsequent dyspareunia. Clin Exp Obstet Gynecol. 1987; 14(2):97-100.
    View in: PubMed
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