“Leonardo da Vinci’s world map: On the neglected scope of his global cartographic projections.” Rumsey Society, Stanford University, November 2019.
“Young Leonardo: In honor of his quincentennial ” Laser Talks, Stanford University, September 2019.
“The Development of Chinese Perspective”, Department of Psychology, South China Normal University, Guangzhou, China, November, 2018.
“Time, Light and the Nature of Conscious Vision”, Institute of Philosophy, University of London, April, 2015
“The Arts and the Brain: What Does Your Brain See? What does Your Brain Hear?”, AAAS/Dana Foundation Symposium with Nina Kraus and Gary Vikan, Washington, DC; October, 2013
“Application of Face Encoding to Art Investigations”, invited paper for the European Conference on Visual Information Processing (EUVIP), Paris, France; June, 2013.
“Seeing in Depth: Space perception from Leonardo da Vinci to the 21st century”, U Wisconsin Lecture in Culture and Society, Madison, Wisconsin; September, 2012.
“Thirty Millennia of Perspective”, invited paper for the Asian Pacific Conference on Vision, Taipei, Taiwan; July, 2010.
“Eye Candy”, panelist with Jules Feiffer, Buzz Hays, Margaret Livingstone, and Patrick Cavanagh; World Science Festival, New York, NY; June 2010.
“Darkness and Depth in Early Renaissance Painting,“ invited paper for the Human Vision and Electronic Imaging Conference, San Jose; January 2010.
“How Did Leonardo Perceive Himself? Metric Iconography of Da Vinci’s Self-Portraits,” invited paper for the Human Vision and Electronic Imaging Conference, San Jose; January 2010.
“Gombrich’s Vault of Perception: Do we “really” see straight lines as curved?” invited paper for the Gombrich Centenary Symposium, Warburg Institute, London; June 2009.
Panelist in “Portraits of Perception: The Human Face”, with Chuck Close, Devorah Sperger, Margaret Livingstone, and Ken Nakayama; World Science Festival New York, 2009.
BBC Radio Oxford Broadcast “Alice’s Adventures in … Woodstock?”, proposing the novel sources of Lewis Carroll’s creation in the court of Eleanor of Aquitaine. http://www.bbc.co.uk/oxford/content/articles/2009/01/02/alice.shtml.
“The Intersection of Art and Visual Science in the Italian Renaissance,” Keynote Address to the European Conference on Visual Perception, Arezzo, Italy; August, 2007.
“On Painterly Perspective and Divine Proportion in Piero della Francesca’s Oeuvre”, contribution to the Renaissance Vision symposium, Arezzo, Italy, sponsored by Fondazione Piero della Francesca; August, 2007.
”Space Representation in Art and the Brain”, eight-lecture series at the Department of Psychology, University of Paris, Rene Descartes, Paris; April, 2007.
“The Truth about Curved Perspective”, contribution to the Pictures in Art, Science, and Engineering meeting, UC Berkeley; March, 2007.
“The History of Perspective from Greece to Magritte”, Bellagio International Study Center, Bellagio, Italy; July, 2006.
“The Birth of Renaissance Perspective”, Department of Psychology, Oxford University; August, 2005.
“Human Face Perception: Symmetry, Depth and Form”, Keynote Address to the Society of Photo- Optical Instrumentation Engineers, San Jose, California, Jan, 2004.
“The History of Perspective” and “The Role of Optics”, two lectures in a course on Optics and Art offered at the Department of Art History, Stanford University, Palo Alto, California; March, 2003.
“30,000 Years of Perspective Representation”, Department of Psychology, University of Nevada, Reno, Nevada; November, 2002.
“The History of Perspective from Greece to O’Keefe.” Institute for Neuroscience, University of California, Davis, California, April, 2002.
“Art, Symmetry and Neuroscience”, Frist Art Museum (Opening Lecture Series), Nashville, Tennessee; March, 2002.
“The Evocation of Light”, Invited presentation for the Seeing the Light Symposium, Scottish Arts Council, Glasgow, Scotland; March, 2002.
“The Birth of Renaissance Perspective”, Inaugural Summer Lecture of the Craik Club, University of Cambridge, UK; August, 2002.
“The Representation of Space in 20th Century Art.” Invited paper at the Society of PhotoOptical Instrumentation Engineers, San Jose, California, Jan, 2001 (with A. Ione).
“What Perspective Construction Reveals about Hockney’s Optical Hypothesis”, Invited presentation for the Art and Optics Symposium, New York Institute for the Humanities, New York; December, 2001.
“The History of Perspective from Greece to Magritte”, Invited presentation for The Art of Vision and the Vision of Art Symposium at the Australian National University, Canberra Australia, December, 2001.
“Masolino da Panicale and the Development of One-Point Perspective”, School of Optometry, University of California, Berkeley, California, November, 2001.
“The Optical Innovations of Masolino da Panicale”, Society for the History of Ophthalmology, Stanford, California; October, 2001.
“The Historical Development of Display in Art”, Society for Information Display, Santa Clara, California; June, 2001.
“The Perspective Innovations of Masolino da Panicale”, The Warburg Institute, University of London, London, U.K.; November, 2000.
“The Van Eycks and the Birth of Northern Perspective”, The Maastricht McLuhan Institute, Maastricht, The Netherlands; November, 2000.
“Masolino da Panicale, A Neglected Genius of Renaissance Perspective”, School of Architecture, University of Rome, “La Sapienza”, Rome, Italy; October, 2000.
“The Van Eycks and the Birth of Northern Perspective”, School of Liberal Arts, University of Ghent, Ghent, Belgium: October, 2000.