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Rémy Allard - Chercheur postdoctoral

remy.allard@umontreal.ca

514-343-6111 - Poste: 1685

Domaines & interêts :

  • Color and texture motion: I am investigating if we have motion mechanisms dedicated to color and texture. Specifically, I am evaluating if our ability to perceive fast color and texture motion is due to nonlinearities within the luminance motion pathway or to dedicated color and texture motion mechanisms.
  • Equating stimulus visibility across age: To attribute an age-related performance decline to cognitive functions, the experimenter must assert that this performance drop is not due to a sensory-perceptual decline. By characterizing age-related sensory-perceptual declines, my goal is to develop psychophysical tools equating stimulus visibility across age to assess the effect of healthy aging on cognitive functions.
  • Noise paradigms: Noise is widely used to study visual functions. It is generally assumed that adding noise to a stimulus does not qualitatively affect the way the stimulus is processed, that is, the same processing strategy operates whether the dominant noise source comes from the observer (internal noise) or the stimulus (external noise). Based on this noise-invariant processing assumption, noise paradigms are frequently used to characterize various processing properties. However, I recently found conditions under which the processing strategy drastically changes depending on the noise source. I am now trying to determine the conditions under which the processing strategy changes depending on whether the dominant noise source is internal or external.

Publications :

  • Allard R. & Faubert J. (2013) No dedicated second-order motion system. Journal of Vision,13(11):2, 1-9 (Voir l'article).
  • Allard R. & Faubert J. (2013) Zero-dimensional noise is not suitable for characterizing processing properties of detection mechanisms. Journal of Vision, 13(10):25, 1-3 (Voir l'article).
  • Allard R., *Lagacé-Nadon S. & Faubert J. (2013) Feature tracking and aging. Frontiers in Psychology. 4:427 (Voir l'article).
  • Allard R. & Faubert J. (2013) No second-order motion system sensitive to high temporal frequencies. Journal of Vision, 13(5):4, 1-14 (Voir l'article).
  • Legault I., Allard R. & Faubert J. (2013) Healthy older observers show equivalent perceptual-cognitive training benefits to young adults for multiple object tracking. Frontiers in Psychology, 4:323 (Voir l'article).
  • Hanssens J. M., Allard R., Giraudet G. & Faubert J. (2013) Visually induced postural reactivity is velocity-dependent at low temporal frequencies and frequency-dependent at high temporal frequencies. Experimental Brain Research, 1-10 (Voir l'article).
  • Allard R. & Cavanagh P. (2012). Different processing strategies underlie voluntary averaging in low and high noise. Journal of Vision, 12(11):6, 1-12 (Voir l'article).
  • Allard R. & Cavanagh P. (2011). Crowding in a detection task: external noise triggers change in processing strategy. Vision Research, 51(4):408-16. (Voir l'article).
  • Lagacé-Nadon S, Allard R, Faubert J., (2009). Exploring the spatiotemporal properties of fractal rotation perception. Journal of Vision, 9(7):3, 1-15, http://journalofvision.org/9/7/3/, doi:10.1167/9.7.3. (Voir l'article).
  • Allard, R., Faubert, J., (2008). First- and second-order motion mechanisms are distinct at low but common at high temporal frequencies. Journal of Vision, 8(2):12, 1-17, http://journalofvision.org/8/2/12/, doi:10.1167/8.2.12. (Voir l'article).
  • Allard, R., Faubert, J., (2008). The noisy-bit method for digital displays: converting a 256 luminance resolution into a continuous resolution. Behavior Research Methods, 40(3):735-43. (Voir l'article).
  • Allard, R. & Faubert, J., (2007). Double dissociation between first- and second-order processing. Vision Research, 47(9), 1129-1141. (Voir l'article).
  • Legault, I., Allard, R., Faubert, J., (2007). Normal aging and the perception of curvature shapes. Optometry & Vision Science, 84(12), 1087-1092. (Voir l'article).
  • Allard, R., Faubert, J., (2006). Same calculation efficiency but different internal noise for luminance and contrast-modulated stimuli detection. Journal of Vision, 6(4), 322-334, http://journalofvision.org/6/4/3/, doi:10.1167/6.4.3. (Voir l'article).
  • Faubert, J., Allard, R., Hanssens, J.-M., (2005). Visual distortion, postural balance and perception-action in a full-immersion virtual reality environment: The NSERC-Essilor industrial Chair projects. Points de Vue, 53, 13-19.
    (Voir l'article).
  • Allard, R., Faubert, J., (2004). "Neural Networks: Different problems require different learning rate adaptive methods". In Image Processing: Algorithms and Systems III, edited by Eward R. Dougherty, Jaakko T. Astola, Karen O. Egiazarian,, Proceedings of SPIE-IS&T Electronic Imaging, SPIE Vol. 5298, pp. 516-527. (Voir l'article).
  • Faubert, J., Allard, R., (2004). "Effect of visual distortion on postural balance in a full immersion stereoscopic environment". In Stereoscopic Displays and Virtual Reality Systems XI, edited by Andrew J. Woods, John O. Merrit, Stephen A. Benton, Mark T. Bolas, Proceedings of SPIE-IS&T Electronic Imaging, SPIE Vol. 5291, pp. 4 (Voir l'article).

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