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Zili Liu, Ph.D.

Biography

Zili Liu studies visual perception — how people see and why they see the way they do (http://zililab.psych.ucla.edu). He joined UCLA’s Psychology Department in 2001. Dr. Liu received his Ph.D. in Cognitive and Linguistic Sciences, and his M.S. in Applied Mathematics, both from Brown University. He received his B.Sc. in Physics, from Beijing (Peking) University, China. He supports Rural China Education Foundation (http://www.ruralchina.org/)

Publications

A selected list of publications:

Lucy Cui and Zili Liu.   Synergy between Research on Ensemble Perception, Data Visualization, and Statistics Education: A Tutorial Review, Attention, Perception, & Psychophysics, 2020; (in press)(Special Issue on Ensemble Perception): .
Alan L.F. Lee, Zili Liu, Hongjing Lu.   Parts beget parts: Bootstrapping hierarchical object representations through visual statistical learning, Cognition, 2020; (in press): .
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Gennady Erlikhman, Gurjyot Singh, Tandra Ghose, Zili Liu   The effect of perceptual contour orientation uncertainty on the tilt aftereffect Vision Research, 2019; 158: 126-134.
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Yang (Mac) Xing, Zili Liu.   A Preference for Minimal Deformation Constrains the Perceived Depth of a Stereokinetic Stimulus Vision Research, 2018; 153: 53–59.
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Daniele Zavagno, Olga Daneyko, and Zili Liu.   The influence of physical illumination on lightness perception in simultaneous contrast displays i-Perception, 2018; 9(4): 1-22.
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Willey, C. and Liu, Z.   Long-term motor learning: Effects of varied and specific practice Vision Research, 2018; 152: 10-16.
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Jinfeng Huang; Ju Liang; Yifeng Zhou; Zili Liu   Transfer in motion discrimination learning was no greater in double training than in single training Journal of Vision, 2017; 17(6): 1-10.
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Hongjing Lu, Bosco S. Tjan, and Zili Liu   Human efficiency in detecting and discriminating biological motion Journal of Vision, 2017; 17(6): 1 — 14.
Jiawei Zhou, Zili Liu, Simon Clavagnier, Alexandre Reynaud, and Fang Hou.   Visual Plasticity in Adults, Neural Plasticity, 2017; 2017: 2.
Benjamin Thompson; Choi Deblieck; Allan D Wu; Marco Iacoboni; Zili Liu.   Psychophysical and rTMS evidence for the presence of motion opponency in human V5 Brain Stimulation, 2016; .
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Ju Liang, Yifeng Zhou, Zili Liu.   Examining the Standard Model of Signal Detection Theory in motion discrimination, Journal of Vision (Special Issue on Perceptual Learning), 2016; 16(9): doi:10.1167/16.7.9.
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Zili Liu, Xiaoyang Yang, Helene Intraub.   Boundary extension: Insights from Signal Detection Theory Journal of Vision, 2016; 16(8): 1–10.
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Jennifer Chang, Yifeng Zhou, Zili Liu.   Limited top-down influence from recognition to same-different matching of Chinese characters PLoS ONE, 2016; 11(6): e0156517. doi:10.1371/journal.pone.0156517.
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Ju Liang, Yifeng Zhou, Manfred Fahle, and Zili Liu   Limited Transfer of Long-Term Motion Perceptual Learning with Double Training Journal of Vision (Special Issue: Perceptual Learning), 2015; 15(1): 1 – 9.
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Ju Liang, Yifeng Zhou, Manfred Fahle, Zili Liu   Specificity of motion discrimination learning even with double training and staircase Journal of Vision (Special Issue: Perceptual Learning), 2015; 15(3): 1 – 10.
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Nihong Chen, Taiyong Bi, Tiangang Zhou, Sheng Li, Zili Liu, and Fang Fang.   Sharpened cortical tuning and enhanced cortico-cortical communication contribute to the long-term neural mechanisms of visual motion perceptual learning Neuro Image, 2015; 115: 17 — 29.
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Tandra Ghose, Zili Liu.   Generalization between canonical and non-canonical views in object recognition Journal of Vision, 2013; 13(1): 1–15.
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Xiaoxiao Wang, Yifeng Zhou, Zili Liu.   Transfer in motion perceptual learning depends on the difficulty of the training task Journal of Vision, 2013; 13((7):5): 1 — 9.
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Xuan Huang, Hongjing Lu, Yifeng Zhou, Zili Liu.   General and specific perceptual learning in radial speed discrimination Journal of Vision, 2011; 11(4, article 7): 1 — 11.
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Zhou J, Tjan B S, Zhou Y, Liu Z   Better discrimination for illusory than for occluded perceptual completions Journal of Vision, 2008; 8(7(26)): 1-17.
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Zhou J, Gotch C, Zhou Y, Liu Z   Perceiving an object in its context — is the context cultural or perceptual? Journal of Vision, 2008; 8(12(2)): 1-5.
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Huang X, Lu H, Tjan BS, Zhou Y, Liu Z   Motion perceptual learning: When only task-relevant information is learned Journal of Vision, 2007; 7(10:14): 1-10.
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Hou F, Lu H, Zhou Y, Liu Z.   “Amodal completion impairs stereo acuity discrimination”, Vision Research, 2006; 46: 2061-2068.
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Lu H, Zavagno D, Liu Z.   “The glare effect does not give rise to a longer lasting afterimage”, Perception, 2006; 35: 701 — 707.
Thompson B, Liu Z.   Learning motion discrimination with suppressed and unsuppressed MT, Vision Research, 2006; 46: 2110-2121.
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Rokers B, Yuille A, Liu Z.   The perception of a stereokinetic stimulus, Vision Research, 2006; 46: 2375 — 2387.
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Lu H, Liu Z   Computing dynamic classification images from correlation maps Journal of Vision [electronic resource], 2006; 6: 475 — 483.
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Lu H, Tjan B S, Liu Z.   “Shape recognition alters sensitivity in stereoscopic depth discrimination” Journal of Vision [electronic resource], 2006; 6: 75–86.
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Tjan, B S Liu, Z.   Symmetry impedes symmetry discrimination Journal of vision [electronic resource], 2005; 5(10): 888-900.
Rokers B, Liu Z.   “On the minimal relative motion principle — lateral displacement of a contracting bar”, Journal of Mathematical Psychology, 2004; 48(4): 292-295.
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Liu Z.   “On the principle of minimal relative motion — the oscillating tilted bar” Journal of Mathematical Psychology, 2004; 48: 196-198.
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Lu, H Qian, N Liu, Z   Learning motion discrimination with suppressed MT Vision research. , 2004; 44(15): 1817-25.
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Liu, Z Kersten, D   Three-dimensional symmetric shapes are discriminated more efficiently than asymmetric ones Journal of the Optical Society of America. A, Optics, image science, and vision, 2003; 20(7): 1331-40.
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Liu Z.   “On the principle of minimal relative motion — the bar, the circle with a dot, and the ellipse” Journal of Vision [electronic resource], 2003; 3: 625–629.
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Matthews N, Liu Z, Qian N.   “The effect of orientation learning on contrast sensitivity” Vision Research, 2001; 41: 463-471.
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Liu, Z Weinshall, D   Mechanisms of generalization in perceptual learning Vision research, 2000; 40(1): 97-109.
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Liu Z.   “Learning a visual skill that generalizes across motion directions” Proceedings of the National Academy of Sciences USA, 1999; 96: 14085-14087.
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Matthews N, Liu Z, Geesaman B J, Qian N.   “Perceptual learning on orientation and direction discrimination” Vision Research, 1999; 39: 3692-3701.
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Liu, Z Jacobs, DW Basri, R   The role of convexity in perceptual completion: beyond good continuation Vision research. , 1999; 39(25): 4244-57.
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Liu, Z Kersten, D Knill, DC   Dissociating stimulus information from internal representation–a case study in object recognition Vision research, 1999; 39(3): 603-12.
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Liu, Z Kersten, D   2D observers for human 3D object recognition? Vision research. , 1998; 38(15-16): 2507-19.
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Liu, Z Vaina, LM   Simultaneous learning of motion discrimination in two directions Brain research. Cognitive brain research, 1998; 6(4): 347-9.
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Liu, Z   Viewpoint dependency in object representation and recognition Spatial vision, 1996; 9(4): 491-521.
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Liu, Z Knill, DC Kersten, D   Object classification for human and ideal observers Vision research, 1995; 35(4): 549-68.
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Zhang, S. W. Wang, X. Liu, Z. Srinivasan, M V.   Visual tracking of moving targets by freely flying honeybees Visual neuroscience, 1990; 4(4): 379-86.
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Michael Levine, Ph.D.

Biography

Neurophysiological mechanisms underlying neurodegenerative disorders. Our primary research interests are directed toward understanding the mechanisms underlying neuronal dysfunction in the basal ganglia and cortex in neurodegenerative disorders. The research consists of a multidisciplinary approach combining neurophysiological, morphological and molecular techniques. This research has evolved into several major projects: 1) Examining the physiological changes in mutant mouse models of Huntington’s disease, 2) Assessment of neuromodulation in the striatum as in pertains to Parkinson’s disease and assessment of new gentic mouse models of Parkinson’s disease and 3) Examining cellular cortical electrophysiological and morphological abnormalities occurring in children suffering from intractable pediatric epilepsy. The first area of research involves using mutant murine models of Huntington’s disease to understand how this neurological disorder physiologically affects cellular function. We study different types of mouse models, each with a unique part of the human Huntington’s disease gene inserted into the mouse genome. We examine physiological function and morphological changes in striatal and cortical neurons, the two primary areas affected in Huntington’s disease. The studies on neuromodulation have concentrated on examining interactions among receptor subtypes in the striatum and othe nuclei of the basal ganglia as well as new genetic models of Parkinson’s disease. These studies emanate from our initial observations that the direction of dopamine modulation of electrophysiological responses induced by activation of excitatory amino acid receptors is dependent upon the subtypes of excitatory amino acid and dopamine receptors activated. This observation could explain many of the inconsistencies in the literature concerning the modulatory role of dopamine in the striatum and other nuclei. One of the goals of these studies is to learn the rules that guide dopaminergic modulation, to identify their mechanisms and to examine how this modulation is altered in models of Parkinson’s disease to help design rational therapies for this disorder. The third area examines alterations in development of electrophysiological properties of human neocortical neurons. Pathological neocortical tissue is obtained from children suffering from pediatric epilepsy and undergoing surgery to alleviate intractable seizures. These experiments study “abnormal-appearing” neurons and they have shown that a population of neurons with altered voltage-dependent intrinsic currents and in some cases altered ligand-gated currents occurs.