Journal papers describing the gradient motion model
- Johnston A, McOwan P. W. & Benton C, Biological computation of motion by flows over boundaries, Journal of Physiology special edition on "Geometry and Cognition", Journal of Physiology Paris vol. 97, no. 2-3, pp. 325-334, March-May 2003
- Benton, C.P, Johnston, A., McOwan, P.W. & Victor, J.D. Computational modelling of non-Fourier motion: further evidence for a single luminance based mechanism. Journal of the Optical Society of America A, 18, (2001) pp 2204-2208
- Series A.C. Benton, A. Johnston & PW McOwan, Computational modelling of interleaved first- and second-order motion sequences and translating 3f+4f beat patterns. Vision Research. 40 (2000) pp 1135-1142 Download paper in .pdf format
- Johnston A, McOwan P W & Benton C, Robust velocity computation from a biologically motivated model of motion perception Proc. Royal Soc. Lond. B 266 (1999) pp509-518 Download paper in .pdf format
- Johnston A, Benton C & McOwan P W, Induced motion at texture-defined motion boundaries, Proc. Royal Soc. Lond. B 266 (1999) pp 2441-2450. Download paper in .pdf format [movie of induced motion in second order stimulus]
- McOwan P. W., Benton C. Dale J. & Johnston A, A multi-differential neuromorphic approach to motion detection, International Journal of Neural Systems, 9 (1999) pp429-434 Download paper in .pdf format [movie showing processing of real image sequence]
- Johnston, A. & Clifford, C.W.G. A unified account of three apparent motion illusions Vision Research 35, 1109-1123 (1995). Download paper in .pdf format
- Johnston A. & Clifford C. W. G. Perceived motion of contrast modulated gratings: predictions of the Multi-channel Gradient model and the role of full wave rectification, Vision Research, 35, 1771-1783 (1995). Download paper in .pdf format
- Johnston A., McOwan P.W. & Buxton H. A computational model of the analysis of some first and second order motion patterns by simple and complex cells Proc. R. Soc. Lond. B 250 (1992), pp 297-306.
Conference
papers
For abstracts and handouts see Chris Benton's page in Bristol
- Benton, C.P., Johnston, A. & McOwan, P.W. (2001). Computational modelling of non-Fourier motion. Vision Sciences Society, 1, 45. [abstract] [handout]
- Johnston, A., Clifford, C.W.G, Benton, C.P. & McOwan, P.W. (2001). Why correlation, energy and gradient models are not equivalent. Vision Sciences Society, 1, 68. [abstract]
- Benton, C.P. & Johnston, A. (2001). A gradient-based description of some second-order motion stimuli. Investigative Ophthalmology and Visual Science (Suppl), 42, 322. [abstract]
- Chubb, C.F., Johnston, A. & Benton, C.P. (2000). First-order motion with no motion energy. Investigative Ophthalmology and Visual Science (Suppl), 41. [abstract]
- Benton, C.P., Johnston, A.J. & McOwan, P.W. (1999). Computational modelling of interleaved first- and second-order motion sequences and translating 3f + 4f beat patterns. Perception (Suppl), 28, 29. [abstract]
- Johnston, A., Benton, C.P. & McOwan, P.W. (1999). Computational modelling of second-order motion. Investigative Ophthalmology and Visual Science (Suppl), 40, 1046.
- Johnston, A., Benton, C.P. & McOwan, P.W. (1998). Do we need a special nonlinear channel to see second-order motion? Perception, 27, 1487.
- Benton, C.P. & Johnston, A. (1998). Differences in perceived contrast in patterns with identical Fourier amplitude spectra. Perception (Suppl), 17, 8.
- Johnston, A., McOwan, P.W. & Benton, C.P. (1998). Computing motion in the presence of static pattern. Perception (Suppl), 17, 1.
- Benton, C.P. & Johnston, A. (1998). Modulations of noise structure: invisible second-order motion? Investigative Ophthalmology and Visual Science (Suppl), 39, 1083.
- Benton, C.P., McOwan, P.W. & Johnston, A. (1996). Judgements of direction in 'third-order' motion stimuli. Perception (Suppl), 25, 119.
- Benton, C.P., Johnston, A. & McOwan, P.W. (1996). Testing the rectification hypothesis for second-order motion perception. Investigative Ophthalmology and Visual Science (Suppl), 37, 746.
- Johnston, A. & Benton, C.P. (1996). Velocity discrimination thresholds for first- and second-order bars and edges. Investigative Ophthalmology and Visual Science (Suppl), 37, 900.
- Benton, C.P., Johnston, A. & McOwan, P.W. (1995). What filters are required for the detection of the motion of contrast modulations. Investigative Ophthalmology and Visual Science (Suppl), 36, 51.
- Johnston, A., McOwan, P.W. & Benton, C.P. (1995). Nonlinear interactions in direction selective complex cell receptive fields are predicted by a gradient model. Investigative Ophthalmology and Visual Science (Suppl), 36, 57.
- McOwan P. W. & Johnston A. The algorithms of natural vision: the multi-channel gradient model. First IEE/IEEE International Conference on genetic algorithms and applications. Sheffield, Conference publication 414 (1995) 319-324
- McOwan P.W. & Johnston A Computation of image velocity from multiple measures of spatio-temporal gradients Invest. Opthal. & Vis. Sci 37 (1996) 2116
- Benton C. Johnston A. & McOwan P.W. Testing the rectification hypothesis Invest. Opthal. & Vis. Sci 37 (1996) 3417
- Johnston A, McOwan P W, Modelling biological motion analysis in terms of image flow Perception 27, (1998) 4.
- McOwan P. W. & Johnston A, Computing velocity using a derivative model of cortical receptive fields. Presented at Rank Mini-Symposium on Visual Motion Analysis, November (1996)
- ALSO SEE Bruce, V., Green, P.R. & Georgeson, M.A. Visual Perception: Physiology, Psychology & Ecology 3rd Edition 1-CH 8. (Laurence Erlbaum Associates, Hove, 1996).
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