Lab Members
Debbie Giaschi
Post Docs
Graduate Students
Research Assistants
Current Collaborators
Current Projects
Motion Perception
UBC Vision Lab
Visual Cognition Group
Study Recruitment

Visual Neuroscience Lab

Deborah E. Giaschi Ph.D.

Professor in the Department of Ophthalmology and Visual Sciences
Associate Member in the Department of Psychology, University of British Columbia
Staff Scientist at B.C. Children's Hospital
Director of Operations, Child and Family Research Imaging Facility
Associate Member, Department of Pediatrics
Scientist level 3 at the Child and Family Research Institute
B.Sc. in Psychology/Zoology from the University of Toronto (1983)
M.A. in Experimental Psychology from York University (1985)
Ph.D. in Experimental Psychology from York University (1989)
Recent Talks:
  1. Multiple-object tracking in amblyopia. Mini-symposium, Association for Research in Vision and Ophthalmology, Orlando, Florida, May 2014.

  2. The effect of speed on human motion processing. Interdisciplinary Workshop on Perception and Cognition, Peter Wall Institute, UBC, May, 2014.

  3. New binocular approaches to amblyopia treatment. Lions Eye Summit: Gained in Translation, Department of Ophthalmology, University of Washington, Sept 2013.

  4. Using motion perception in the assessment and treatment of amblyopia. Pediatric Ophthalmology & Strabismus conference, Vancouver, BC, Sept 2013.

  5. Quantitative measurement of interocular suppression in children with amblyopia. Canadian Amblyopia Network meeting, University of Toronto, July 2012.

  6. Functional MRI and DTI in atypical visual development. Child and Family Research Institute Imaging Research conference, Vancouver, April 2012.

  7. Amblyopia: a new approach to an old problem. Developmental Neurosciences and Child Health Research Day, Child and Family Research Institute, Vancouver, October 2011.

  8. Testing, testing: the science behind clinical tests of stereopsis, contrast sensitivity and visual acuity. The Canadian Orthoptic Society Workshops, Vancouver, June 2011.

  9. What can we tell patients about 3D TV? The Canadian Orthoptic Society Annual Meeting, Vancouver, June 2011.

  10. Developmental dyslexia. UBC Neuropsychiatry Grand Rounds, April 2011.

  11. The neural basis of motion perception deficits in amblyopia and developmental dyslexia. Vision Science Research Seminar, University of Waterloo, November 2010.

Selected Refereed Publications
(a) Journals
  1. Giaschi, D., Chapman, C., Meier, K., Narasimhan, S., Regan, D. (2015). The effect of occlusion therapy on motion perception deficits in amblyopia.Vision Research, 114, 122-134.

  2. Meier K, Giaschi D. (2014) The maturation of global motion perception depends on the spatial and temporal offsets of the stimulus. Vision Research 95, 61-67.

  3. Giaschi D, Lo R, Narasimhan S, Lyons C, Wilcox L. (2013) Sparing of coarse stereopsis in stereodeficient children with a history of amblyopia. Journal of Vision, 13(10): 17.

  4. Giaschi D, Narasimhan S, Solski A, Harrison E, Wilcox L. (2013) On the typical development of stereopsis: fine and coarse processing. Vision Research, 88, 65-71.

  5. Partanen M, Fitzpatrick K, Madler B, Edgell D, Bjornson B, Giaschi D. (2012) Cortical basis for dichotic pitch perception in developmental dyslexia. Brain and Language, 123, 104-112.

  6. Narasimhan S, Harrison E, Giaschi D. (2012) Quantitative measurement of interocular suppression in children with amblyopia. Vision Research, 66, 1-10.

  7. Narasimhan S, Giaschi D. (2012) The effect of dot speed and density on the development of global motion perception. Vision Research, 62, 102-107.

  8. Secen J, Culham J, Ho C, Giaschi D. (2011) Neural correlates of the multiple-object tracking deficit in amblyopia. Vision Research, 518, 2517-2527.

  9. Hayward J, Truong G, Partanen M, Giaschi D. (2011) Effects of speed, age and amblyopia on the perception of motion-defined form. Vision Research, 51, 2216-23.

  10. Ho C, Giaschi D. (2009) Low- and high-level motion perception deficits in anisometropic and strabismic amblyopia: evidence from fMRI. Vision Research, 49, 2891-901.

  11. Lanyon L, Giaschi D, Au Young S, Fitzpatrick K, Diao L, Bjornson B, Barton J. (2009) Combined functional MRI & diffusion tensor imaging analysis of visual motion pathways. Journal of Neuro-Ophthalmology, 29, 96-103.

  12. Ho C, Giaschi D. (2009) Low- and high-level first-order random-dot kinematograms: evidence from fMRI. Vision Research, 49, 1814-24.

  13. Boden C, Giaschi D. (2009) The role of low-spatial frequencies in lexical decision and masked priming. Brain and Cognition,69, 580-91.

  14. Iaria G, Lanyon L, Fox C, Giaschi D, Barton J. (2008) Navigational skills correlate with hippocampal fractional anisotropy in humans.Hippocampus, 18, 335-9.

  15. Wang J, Ho C, Giaschi D. (2007) Deficient motion-defined and texture-defined figure-ground segregation in amblyopic children. Journal of Pediatric Ophthalmology and Strabismus, 44, 363-71.

  16. Ho C, Giaschi D. (2007) Stereopsis-dependent deficits in maximum motion displacement in strabismic and anisometropic amblyopia. Vision Research,47, 2778-85.

  17. Giaschi D, Zwicker A, Au Young S, Bjornson B. (2007) The role of cortical area V5/MT+ in speed-tuned directional anisotropies in global motion perception. Vision Research, 47, 887-98

  18. Boden C, Giaschi D. (2007) M-stream deficits and reading-related visual processes in developmental dyslexia. Psychological Bulletin, 133, 346-66.

  19. Ho C, Giaschi D. (2006) Deficient maximum motion displacement in amblyopia. Vision Research, 46, 4595-603.

  20. Ho C, Paul P, Asirvatham A, Cavanagh P, Cline R, Giaschi D. (2006) Abnormal spatial selection and tracking in children with amblyopia. Vision Research, 46, 3274-83.

  21. Zwicker A, Hoag R, Edwards V, Boden C, Giaschi D. (2006) The effects of optical blur on motion and texture perception. Optometry and Vision Science, 83, 382-90.

  22. Ho C, Giaschi D, Boden C, Dougherty R, Cline R, Lyons C. (2005) Deficient motion perception in the fellow eye of amblyopic children. Vision Research, 45, 1615-27.

  23. Edwards V, Giaschi D, Low P, Edgell D. (2005) Sensory and non-sensory influences on children’s performance of dichotic pitch perception tasks. Journal of the Acoustical Society of America, 117, 3157-64.

  24. Parrish E, Giaschi D, Boden C, Dougherty D. (2005) The maturation of form and motion perception in school age children. Vision Research, 45, 827-37.

  25. Chapman C, Hoag R, Giaschi D. (2004) The effect of disrupting the human magnocellular pathway on global motion perception. Vision Research, 44, 2551-7.

  26. Visser T, Boden C, Giaschi D. (2004) Children with dyslexia: evidence for temporal processing deficits. Vision Research, 44, 2521-35.

  27. Tata M, Giaschi D. (2004) Warning: Attending to a mask may be hazardous to your perception. Psychonomic Bulletin & Review, 11, 262-8.

  28. Edwards V, Giaschi D, Dougherty R, Edgell D, Bjornson B, Lyons C, Douglas R. (2004) Psychophysical indices of temporal processing abnormalities in children with dyslexia. Developmental Neuropsychology, 25, 321-54.

  29. Giaschi D, Jan J, Bjornson B, Au Young S, Tata M, Good W, Lyons C, Wong P. (2003) Conscious visual abilities in a patient with early bilateral occipital damage. Developmental Medicine & Child Neurology, 45, 772-81.

  30. Dougherty R, Cynader M, Bjornson B, Edgell D, Giaschi D. (1998) Dichotic pitch revisited: A new stimulus distinguishes normal and dyslexic auditory function. Neuroreport, 9, 3001-5.

(b) Conference Proceedings
  1. Meier, K., Giaschi, D., Wilcox, L.M., Seemiller, E.S., Candy, T.R. (2016). Vergence responses to fine and coarse disparities: Adult-like tuning functions at 5 years of age. Vision Sciences Society.

  2. Meier, K., Sum, B., Wilcox, L.M., Giaschi, D. (2016). Sparing of coarse stereopsis in stereodeficient children depends on amblyogenic factors. Association for Research in Vision and Ophthalmology.

  3. Meier, K., Sum, B., Giaschi, D. (2015). Global motion perception deficits in children with amblyopia as a function of spatial and temporal stimulus parameters. Vision Sciences Society.

  4. Meier, K., Tahmasebi, S., Giaschi, D. (2015). The maturation of global motion perception in school-aged children. Child Vision Research Society.

  5. Meier M, Qiao G, Wilcox L, Giaschi D. (2014) Coarse stereopsis reveals residual binocular function in children with strabismus. Vision Sciences Society.

  6. Giaschi D, Chapman C, Narasimhan S, Ho C, Lyons C, Regan D. (2013) Motion perception deficits and occlusion therapy for amblyopia. Child Vision Research Society.

  7. Meier K, Giaschi D. (2013) Resolving inconsistencies in human global motion maturation. Child Vision Research Society.

  8. Meier K, Partanen M, Lo R, Giaschi D. (2013) Neural correlates of speed-tuned differences in global motion and motion-defined form perception. Journal of Vision 13(9):360. doi: 10.1167/13.9.360

  9. Wilcox L, Redwood J, Giaschi D. (2013) Does the loss of sensory fusion demarcate fine vs coarse processing? Journal of Vision 13(9):1178. doi: 10.1167/13.9.1178

  10. Partanen M, Bjornson B, Edgell D, Giaschi D. (2013) Effect of difficulty on orthographic and phonological single-word reading activation in developmental dyslexia. Human Brain Mapping Conference.

  11. Giaschi D, Narasimhan S. (2012) Using motion perception in the treatment of amblyopia. International Orthoptic Congress.

  12. Solski A, Giaschi D, Wilcox L. (2010) Perceptual grouping leads to depth discrimination deficits in adults, not children. Journal of Vision 10(7): 367 doi:10.1167/10.7.367

  13. Partanen M, Edgell D, Bjornson B, Giaschi D. (2010) Cortical systems utilized for reading and temporal processing in developmental dyslexia. Cognitive Neuroscience Conference.

Book Chapters
Giaschi D (2006) The processing of motion-defined form. In: Harris L and Jenkin M(eds) Seeing Spatial Form. Oxford University Press, New York, pp. 101-119.
Email address: giaschi@mail.ubc.ca
Phone: 604-875-2345 (ext 7807)
Fax: 604-875-2683
Snail Mail: Department of Ophthalmology (Room E300E),
4480 Oak Street, Vancouver, B.C., V6H 3V4 CANADA

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