James T. Todd

Professor of Psychology

Director of the Vision Laboratory at The Ohio State University


Teaching

Psychology 310
Psychology 606
Psychology 737

Demos

demo 1

Research Areas

o Visual Perception
o Visual Cognition


Curriculum Vitae:

Todd-VITA.pdf

Current Research Program

My research is primarily concerned with the visual perception of 3-dimensional form from various types of optical information, such as shading, texture, motion, and binocular disparity. The specific goals of this research are twofold: First, to identify the formal characteristics of how an object's 3-dimensional form is perceptually represented; and second, to discover how these representations are computed from the measurable properties of visual images. In addressing these issues we attempt to develop specific computational models of how image structure could be perceptually analyzed, and to empirically test the validity of those models for actual human observers.


Quicktime Animations


Selected Publications by Group
Selected Publications by Date

Recent Publications

Downloadable Format

Koenderink, J. J., van Doorn, A. J. & Todd, J. T. (in press). Wide distribution of external local sign in the normal population. Psychological Research, 72, DOI: 10.1007/s00426-008-0145-7.

Georgieva, S. G., Todd J. T., Peeters, R. and Guy A. Orban, G. A. (2008) The extraction of 3D shape from texture and shading in the human brain. Cerebral Cortex, 18, 2416– 2438.  

Wilbraham, D. A., Christensen, J., Martinez, A. M. & Todd (2008). Can low level image differences account for the ability of human observers to discriminate facial identity?  Journal of Vision, 8(15)5, 1-12.

Koenderink, J. J., van Doorn, A. J., Kappers, A. M. L., Doumen, M. J. & Todd, J. T. (2008)  Exocentric pointing in depth.  Vision Research, 48, 716-723.

Durand, J. B., Nelissen, K., Joly, O., Wardak, C., Todd, J. T, Norman, J. F., Janssen, P., Vanduffel, W. & Orban, G. A. (2007) Anterior Regions of Monkey Parietal Cortex Process Visual 3D Shape. Neuron, 55, 493-505

.pdf

Koenderink, J. J., Pont, S. C., van Doorn, A. J., Kapers, A. M. L. & Todd, J. T. (2007). The visual light field. Perception, 36.

Todd, J. T. (2007) On the internal consistency of perceptual organization. In M. A. Peterson, B. Gillam & H. A. Sedgwick (Eds.) In the Minds's Eye: Julian Hochberg on the Perception of Pictures, Film, and the World. Oxford: Oxford University Press, pp 531-538.

Thaler, L., Todd, J. T. & Dijkstra, T. M. H.(2007) The effects of phase on the perception of 3D shape from texture: Psychophysics and modeling. Vision Research, 47, 411-427.

Thaler, L., Todd, J. T., Spering, M. & Gegenfurtner, K. (2007) Illusory Bending of a Rigidly Moving Line Segment: Effects of Image motion and Smooth Pursuit Eye Movements. Journal of Vision, 7(6)9, 1-13.

Todd, J. T., Thaler, L., Dijkstra, T. M. H., Koenderink, J. J. & Kappers, A. M. L. (2007). The effects of viewing angle, camera angle and sign of surface curvature on the perception of 3D shape from texture. Journal of Vision, 7(12)9, 1-16.

.pdf

Orban, G. A., Claeys, K., Nelissen, K., Smans, R., Sunaert, S., Todd, J. T., Wardak, C., and Vanduffel, W. (2006) Mapping the parietal cortex of human and non-human primates. Neuropsychologia, 44, 2646-2667.

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Mailing Address:

Psychology Department
216 Lazenby Hall
1827 Neil Avenue
Columbus, OH 43210 USA

Email:

todd.44@osu.edu

Phone:

614-292-8661