Research Interests

My research interest extends into the areas of computational, psychophysical, & physiological basis of perceptual learning and attention.

 

Wilson Chu, Ph.D. 

Postdoctoral Fellow

Department of Cognitive Sciences, University of California, Irvine

office: Social Science Laboratory (SSL) 340

  1. phone: (949)824-9587

email: wchu3 at uci dot edu

Education


    Ph.D., Cognitive Psychology, University of Southern California. Dissertation title: Temporal Dynamics of Perceptual         Decision        


    B.A., Psychology, University of Southern California.


Fellowships


2006    Final Year Dissertation Fellowship. University of Southern California, College of Letters, Arts, and Sciences.


2000    Provost Undergraduate Research Fellowship.  University of Southern California, College of Letters, Arts, and

            Sciences


Publications



2009    Li, X., Z-L., Tjan, B.S., Dosher, B.A., Chu, W., Mechanism of Covert Attention: External Noise

            Exclusion and Stimulus Enhancement in Early Visual Area Cerebral Cortex,  (In Press)

         


2008    Lu, Z.-L., Tse, H.C., Dosher, B.A., Lesmes, L.A., Chu, W., & Posner, C., Intra- and cross-modal cuing of

            visual spatial attention: The hyper-effective simultaneous auditory peripheral cues. Vision Research, 

            Vision Research Vol. 49, Issue 10, pp 1081-1096


            Li, X., Li, Z.-L., Tjan, B.S., Dosher, B.A., & Chu, W., BOLD Contrast Response Functions Identify

            Mechanisms of Covert Attention in Early Visual Areas, Proceedings of the National Academy of Sciences,

            USA, 105(16), 6202-6207.


2006    Lu, Z.-L., Chu, W., & Dosher, B.A., Perceptual Learning of motion direction discrimination in fovea:

            Separable mechanisms, Vision Research, 46(15), 2315-2327


2005    Lu, Z.-L., Chu, W., Dosher, B., & Lee, S., Independent Perceptual Learning in Monocular and Binocular

            Motion Systems, Proceedings of the National Academy of Sciences, USA, 102(15), 5624-5629


1999    Kearns-Jonker, M., Swenson, J., Ghiuzeli, C., Chu, W., Osame, Y., Starnes, V., and Cramer, D.V., The human

            xenoantibody response to porcine xenoantigens is encoded by IGHV3-11 and IGHV3-74 immunoglobulin

            IgVH germline progenitors. Journal of Immunology, 163(8), 4399-4412


1998    Kearns-Jonker, M., Fraiman, M., Chu, W., Gochi, E., Michel, J., Wu, G.D., and Cramer, D.V., Xenoantibodies to

            pig endothelium are expressed in germline configuration and share a conserved immunoglobulin VH

            gene structure with antibodies to common infectious agents. Transplantation 65 1515-1519


Conference Proceedings

(*) Indicates publication of abstract.


2009    *Chu, W., Dosher, B.A., Lu, Z.-L., The rate of perceptual learning at a fixed accuracy threshold is

            improved by feedback and by mixture with easier trials. Poster presented by Chu at the 2009

            Vision Science Society Meeting, Sarasota, Florida

   

           *Dosher, B.A., Chu, W., Lu, Z.-L., Perceptual Learning of Judgement Percision: An Elobrated

            Perceptual Template Model. Talk given by Dosher at the 2009 Annual Interdisciplinary Conference,

            Jackson, Wyoming, USA

   

           *Dosher, B.A., Chu, W., Lu, Z.-L., Orientation thresholds and perceptual learning: An elaborated

            perceptual template model. Poster presented by Dosher at the 2009 Vision Science Society

            Meeting, Sarasota, Florida

   

2007    *Li, X., Lu, Z.-L., Tjan, B.S., Dosher, B.A., and Chu, W., Attention modulation of the BOLD-fMRI contrast

            response functions in early visual areas. Poster presented by Li at the 2007 Vision Science Society Meeting,

            Sarasota, Florida


            *Lu, Z.-L., Li, X., Tjan, B.S., Dosher, B.A., Chu, W., Mechanisms of Covert Attention: External Noise    

            Exclusion and Stimulus Enhancement in Early Visual Areas. Poster presented by Lu at the 2007 Vision

            Science Society Meeting, Sarasota, Florida


2006    *Li, X., Lu, Z.-L., Tjan, B.S., Dosher, B.A., and Chu, W., Attention modulation of the BOLD-fMRI contrast

            response functions in early visual areas. Poster presented by Li at the 2006 Society for Neuroscience    

            conference, Atlanta, Georgia


            *Chu, W., Li, Z.-L., Dosher, B.A., Effects of perceptual learning on the temporal dynamics of perceptual

            decision. Poster presented by Chu at the 6th annual Vision Science Society Meeting, Sarasota, Florida


            Lu, Z.-L., Li, X., Tjan, B.S., Dosher, B.A., and Chu, W., Attention modulation of the BOLD-fMRI contrast

            response functions in early visual areas. Psychonomics.


2005    *Chu, W., Lu, Z.-L., Dosher, B.A., and Lee, S., Independent Perceptual Learning in Monocular and Binocular

            Motion Systems, Poster presented by Chu at the 5th annual Vision Science Society Meeting, Sarasota, Florida


2004    Lu, Z.-L., Chu, W., Dosher, B.A., and Lee, S., Independent Perceptual Learning in Monocular and Binocular

            Motion Systems, Talk given by Lu at the Fall Vision Meeting (FVM), Rochester, NY.


            *Chu, W., Lu, Z.-L., and Dosher, B.A., Characterizing and modeling temporal dynamics of perceptual

            decision-making.   Poster presented by Chu at the Joint Symposium of Neural Computation, Los Angeles, CA


2003    *Chu, W., Lu, Z.-L., and Dosher, B.A., Characterizing and modeling temporal dynamics of perceptual

            decision-making., Poster presented by Chu at the 3rd annual Vision Science Society Meeting, Sarasota, Florida


            *Lu, Z.-L., Tse, H.C., Dosher, B.A., Lesmes, L.A., Chu, W., & Posner, C., Intra- and cross-modal cuing of

            visual spatial attention: The hyper-effective simultaneous auditory peripheral cues. Poster presented by

            Lu at the 3rd annual Vision Science Society Meeting, Sarasota, Florida


            Lu, Z.-L., Chu, W., & Dosher, B.A., Temporal dynamics of perceptual decision. Poster presented by Dosher at

            the 26th annual European Conference on Visual Perception (ECVP), Paris, France


2002    *Chu, W., Lu, Z.-L., and Dosher, B.A., Perceptual learning of motion direction discrimination in fovea

            reflects mixed but separable mechanisms of stimulus enhancement and template retuning.  Poster

            presented by Chu at the 2nd annual Vision Science Society.


2001    *Chu, W., Lu, Z.-L., Dosher, B.A., and Lee, S., Perceptual learning via external noise exclusion and stimulus

            enhancement: monocular for first-order motion, binocular for Gabor orientation.   Talk given by Chu at the

            annual meeting of the Association for Research in Vision and Ophthalmology


            *Lesmes, L.A., Lu, Z.-L., Dosher, B., Sperling, G., Chu, W., and Posner, C., Intra- and Cross-Modal Activation

            of Attention Gates. Talk given by Lesmes at the annual meeting of the Association for Research in Vision and

            Ophthalmology


2000    Chu, W., Lesmes, L.A., Lu, Z.-L., Dosher, B., Sperling, G., Mechanisms of multi-modal attention, Psychology

            Undergraduate Research Conference, (PURC), UCLA. Talk given by Chu



Press

   

        July, 2008,   Matteo Carandini: Faculty of 1000 Biology, 2 Jul 2008

            (http://www.f1000biology.com/article/id/1115428/evaluation)

 

        January, 2008, Knowing how to get attention, USC News

            (http://stevens.usc.edu/read_article.php?news_id=276)


        March, 2005, To train the eye, keep it simple., USC News

            (http://www.usc.edu/uscnews/stories/11147.html)


        March,  2005, To train the eye, keep it simple.  Medical News Today

            (http://www.medicalnewstoday.com/articles/22048.php)