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Published Journal Articles


  • Sandra E. Leh, Kathy T. Mullen & Alain Ptito (2006). Absence of S-cone input in human blindsight. (European Journal of Neuroscience 24(10): 2954-60.
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  • Sandra E. Leh, Heidi Johansen-Berg & Alain Ptito (2006). Unconscious Vision: New insights into the neuronal correlate of blindsight using diffusion tractography. Brain 129(Pt7): 1822-32.
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  • Alain Ptito & Sandra E. Leh (2007). Neural substrates of blindsight in hemispherectomized subjects. Invited Review Article. The Neuroscientist 13(5): 506-18.
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  • Sandra E. Leh, Alain Ptito, Mallar Chakravarty & Antonio Strafella (2007). Fronto-striatal connections in the human brain: A Probabilistic Diffusion Tractography Study.Neuorscience Letters 419(2): 113-8.
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  • Sandra E. Leh, M. Mallar Chakravarty & Alain Ptito (2007). The Connectivity of the Human Pulvinar: A Diffusion Tensor Imaging Tractography Study Int J Biomed Imaging 2008: 789539.
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  • Perez A., Garcia L., Lage A., Leh S.E. & Valdes-Sosa, M. (2008). Right impairment of temporal order judgements in dyslexic children. Laterality 23: 1-16.

  • Sandra E. Leh (2008). Neuronal Substrates of Blindsight in Hemispherectomized Subjects: Behavioral and Diffusion Tensor Imaging Tractography Studies. VDM Verlag ISBN 3639045769.

  • Sandra E. Leh , Alain Ptito,Marc Schönwiesner, Mallar M. Chakravarty, Kathy T. Mullen (2009). Blindsight Mediated by an S-Cone-independent Collicular Pathway: An fMRI Study in Hemispherectomized Subjects. J Cogn Neurosci. (ahead of print)

  • Sandra E. Leh , Michael Petrides, Antonio P. Strafella (2009). The Neural Circuitry of Executive Functions in Healthy Subjects and Parkinson's Disease. Neuropsychopharmacology. (ahead of print)
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Peer-Reviewed Conference Presentations

  • Sandra E. Leh, Alain Ptito & Kathy T. Mullen.
    Blindsight is color blind to s-cone isolating stimuli: An fMRI study. (Poster and Abstract Presentation at the Annual Meeting of the Vision Sciences Society 2009, Naples, Florida, USA).
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  • Sandra E. Leh, Mallar Chakravarty & Alain Ptito.
    The connectivity of the human pulvinar: A Diffusion Tensor Imaging Tractography Study. (Poster and Abstract Presentation at the Annual Meeting of the Vision Sciences Society 2007, Sarasota, Florida, USA).
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  • Sandra E. Leh, Alain Ptito, Mallar Chakravarty & Antonio Strafella.
    Cortical connections of the basal-ganglia: A Probabilistic Diffusion Tractography study. (Poster and Abstract Presentation at the Annual Meeting of the Society of Neuroscience 2006, Atlanta, USA).
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  • Sandra E. Leh, Kathy T. Mullen & Alain Ptito.
    The involvment of the superior colliculi in hemispherectomized subjects with blindsight. (Poster and Abstract Presentation at the Vision Sciences Society Annual Meeting 2006, Sarasota, Florida, USA).
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  • Sandra E. Leh, Alain Ptito, Maria Fraraccio & Antonio Strafella.
    Connectivity of the human primary motor cortex using Probabilistic Diffusion Tractography. (Poster and Abstract Presentation at the Human Brain Mapping Annual Meeting 2006, Florence, Italy).
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  • Sandra E. Leh, Alain Ptito, Maria Fraraccio & Antonio Strafella.
    Investigation of cortico-striatal connectivity using Probabilistic tractography. (Poster and Abstract Presentation at the Human Brain Mapping Annual Meeting 2006, Florence, Italy).
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  • Sandra E. Leh, Heidi Johansen-Berg & Alain Ptito.
    Identifying pathways to blindsight in hemispherectomized subjects using DTI. (Chosen for Oral and Poster/Abstract Presentation at the Human Brain Mapping Annual Meeting 2006, Florence, Italy).
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  • Sandra E. Leh, Alain Ptito & Jorge Armony.
    Spatial Summation and perception of emotional faces in healthy and a hemispherectomized subject: A preliminary study. (Poster and Abstract Presentation at the Human Brain Mapping Annual Meeting 2006, Florence, Italy).
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  • Sandra E.Leh, Jorge Armony & Alain Ptito.
    Spatial Summation across the vertical meridian: A preliminary study. (Poster and Abstract Presentation at the Cognitive Neuroscience Society Annual Meeting 2003,New York, USA).


Oral Presentations

  • Neuronal substrates of blindsight in hemispherectomized subjects. Annual Meeting October 2008, Réseau FRSQ de recherché en santé de la vision, Canada

  • Behavioral and neuroimaging techniques to investigate the neuronal correlate of blindsightAnnual Meeting May 2008, Réseau FRSQ de recherché en santé de la vision, Montreal, Canada

  • The involvement of the superior colliculi in blindsight.Centre de recherché interdisciplinaire en réadaptation (CRIR) Annual Meeting, Canada

  • Identifying pathways to blindsight in hemispherectomized subjects using DTI. Human Brain Mapping, Annual Meeting, Florence, Italy

  • Neuronal Correlate of blindsight - recent findings. Vision Research Centre, Royal Victoria Hospital, Montreal, Canada

  • Subcortical visual pathways in hemianopic hemispherectomized subjects. Cognitive Neuroscience Seminar, Montreal Neurological Institute, Canada

  • Processing of complex stimuli in a hemispherectomized patient with blindsight: A preliminary fMRI study. Douglas Hospital Research Centre, Research Day, Canada

  • Spatial Summation of emotional faces in healthy subjects and in a patient with blindsight. Douglas Hospital Research Centre, Brain Imaging Group, Canada

  • Case Presentation. Annual meeting, German Association of Orthoptists (BOD)

  • Prevention, diagnosis and treatment of childhood eye diseases Disease prevention seminar for paediatricians, Wedel, Germany

  • Learning disabilities and differential diagnosis Seminar for diagnosis, treatment, and training possibilities for learning disabilities and related disorders, Albert-Schweitzer-School, Wedel, Germany


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