CN730: Models of Visual Perception

SPRING 2009

Prerequisites : Consent of the instructor, Ennio Mingolla 
Office hours: by appointment

The 2009 edition of this course offers an advanced survey of selected topics of current interest in the neural and computational modeling of mammalian vision. This year's topics include motion perception, object recognition, and color. Some classes will be held at laboratories of nearby institutions. Students are expected to have a sufficient interdisciplinary grounding in the fundamentals of computational modeling of mammalian vision to read primary research sources extensively. A term project that combines a problem statement, literature review, and either (1) simulation of a model or (2) a design for a psychophysical experiment is required.

Answers to FREQUENTLY-ASKED QUESTIONS about CN730

Information for GUEST SPEAKERS

Dates of DELIVERABLES for student research reports

Weekly Schedule -- Meetings with guest speakers are on Thursdays, beginning on January 15, and start at 2:00 PM, unless otherwise indicated on this page. Meetings with guest speakers at Boston University are held in Room B03 of the CNS Building, 677 Beacon Street, unless indicated by the designation "field trip". An additional weekly discussion hour is held on Tuesdays at 2:00 in Room B02( except on student presentation weeks, when there is no discussion period, and Feb. 17, when the discussion period begins at 11:00 AM.)

Click on a date to go directly to a summary of that week's class, including assigned readings. Links to guest speakers' home pages, weekly topics, and a list of readings will also be found there, though these will be updated in real time in the course of the semester.

Jan 15   Rajeev Raizada

Jan 22   Bob Sekuler

Jan 29    Rick Born -- field trip -- Harvard Med. see map

Feb 5       Arash Afraz -- field trip -- Harvard Psychology, 7th Floor, Billy Jim Hall

Feb 12     Arash Yazdanbakhsh

Feb 19    Thomas Serre

Feb 26    Piers Howe, Todd Horowitz, and Karla Evans -- field trip -- Visual Attention Lab

Mar 5      Student presentations

Mar 12    Spring break

Mar 19    Paul Dizio -- field trip -- Graybiel Lab

Mar 26    Mark Pomplun

Apr 2       Rhea Eskew

Apr 9       Bevil Conway

Apr 16     Ken Brecher

Apr 23     No class (University Monday)

Apr 30     Student presentations, Room B03, 2:00 to 5:00


Jan 15  Rajeev Raizada

Topic: pattern-based fMRI

Readings

Kamitani Y & Tong F. Decoding the visual and subjective contents of the human brain. Nat Neurosci. 2005 May;8(5):679-85.

http://www.psy.vanderbilt.edu/tonglab/publications/Kamitani&Tong_NN2005.pdf

Boynton GM.Imaging orientation selectivity: decoding conscious perception in V1.Nat Neurosci. 2005 May;8(5):541-2.
http://faculty.washington.edu/gboynton/publications/boynton-natureneuro05.pdf

Matlab code:

http://www.nmr.mgh.harvard.edu/~raj/Matlab/raj_explore_kamitani_tong2.m

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Jan 22  Bob Sekuler

Core reading

Yigal Agam, Daniel Bullock and Robert Sekuler

J Neurophysiol 94:2832-2843, 2005. First published Jul 13, 2005; doi:10.1152/jn.00366.2005

Supplementary readings


Averbeck BB, Chafee MV, Crowe DA, Georgopoulos AP.

Parallel processing of serial movements in prefrontal cortex.
Proc Natl Acad Sci U S A. 2002 Oct 1;99(20):13172-7.

Dinstein I. Human cortex: reflections of mirror neurons. Curr Biol. 2008 Oct 28;18(20):R956-9.

 

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Jan 29 Rick Born -- field trip -- Harvard Med

Background
Born, R. T. and Bradley, D. C. (2005) Structure and function of visual area MT. Annu. Rev. Neurosci., 28:157-89. DOI, 10.1146/annurev.neuro.26.041002.131052 pdf available at: http://www.hms.harvard.edu/bss/neuro/bornlab/lab/papers/born-bradley-mt-arn2005.pdf

Core Readings
Pack, C. C., Berezovskii, V. K. and Born, R. T. (2001) Dynamic properties of neurons in cortical area MT in alert and anesthetized macaque monkeys. Nature, 414:905-908. pdf available at: http://www.hms.harvard.edu/bss/neuro/bornlab/

Pack, C. C., Gartland, A. J. and Born, R. T. (2004) Integration of contour and terminator signals in visual area MT of alert macaque. J. Neurosci., 24:3268-3280. pdf available at: http://www.hms.harvard.edu/bss/neuro/bornlab/

Supplementary
Salzman, C.D., Britten, K.H., and Newsome, W.T. Cortical microstimulation influences perceptual judgements of motion direction. Nature 346, 174-7 (1990).

Salzman, C.D., Murasugi, C.M., Britten, K.H., and Newsome, W.T. Microstimulation in visual area MT: effects on direction discrimination performance. J. Neurosci. 12, 2331-55 (1992).

Related

Bershanzkaya, J., Grossberg, S., and Mingolla, E. Laminar cortical dynamics of visual form and motion interactions
during coherent object motion perception. Spatial Vision, 20(4), 337-395. pdf


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Feb 5   Arash Afraz -- field trip -- Harvard Psychology

"Faces in the brain"
    Why faces?
    Background in psychophysics

    Face neurons
    Face aftereffect
    Spatial limits of face processing

Core Readings
Afraz SR, Cavanagh P. Retinotopy of the face aftereffect. Vision Res. 2008 Jan;48(1):42-54. pdf

Afraz SR, Kiani R, Esteky H. Microstimulation of inferotemporal cortex influences face categorization.Nature. 2006 Aug 10;442(7103):692-5. pdf

Background Readings

Leopold DA, O'Toole AJ, Vetter T, Blanz V. Prototype-referenced shape encoding revealed by high-level aftereffects. Nat Neurosci. 2001 Jan;4(1):89-94. pdf

Gross CG. Processing the facial image: a brief history. Am Psychol. 2005 Nov;60(8):755-63. Review. pdf

Kravitz DJ, Vinson LD, Baker CI. How position dependent is visual object recognition? Trends Cogn Sci. 2008 Mar;12(3):114-22. Epub 2008 Feb 11. Review. pdf

DiCarlo JJ, Cox DD. Untangling invariant object recognition. Trends Cogn Sci. 2007 Aug;11(8):333-41. Epub 2007 Jul 16. pdf

 

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Feb 12    Arash Yazdanbakhsh

Yazdanbakhsh A. and Gori, S. (2008) A new psychophysical estimation of the receptive field size, Neuroscience Letters, 438(2): 246-251. pdf

Nishina, S., A. Yazdanbakhsh, et al. (2007). "Depth propagation across an illusory surface." J Opt Soc Am A Opt Image Sci Vis 24(4): 905-10. pdf

Nishida, S. and A. Johnston (2002). "Marker correspondence, not processing latency, determines temporal binding of visual attributes." Curr Biol 12(5): 359-68. pdf

Moutoussis, K. and S. Zeki (1997). "A direct demonstration of perceptual asynchrony in vision." Proc Biol Sci 264(1380): 393-9 pdf

Gori, S. and A. Yazdanbakhsh (2008) The Riddle of the Rotating Tilted Lines Illusion. Perception, 37(4): 631-635. pdf


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Feb 19  Thomas Serre

Computational models of high-level vision

For readings, see: http://web.mit.edu/serre/www/courses/CN-730-sp09.html

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Feb 26     

Piers Howe, Todd Horowitz, and Karla Evans

Readings

Howe PD, Thompson PG, Anstis SM, Sagreiya H, Livingstone MS. Explaining the footsteps, belly dancer, Wenceslas, and kickback illusions. J Vis. 2006 Dec 12;6(12):1396-405. http://www.journalofvision.org/6/12/5/

Horowitz TS, Klieger SB, Fencsik DE, Yang KK, Alvarez GA, Wolfe JM. Tracking unique objects. Percept Psychophys. 2007 Feb;69(2):172-84. pdf

Li FF, VanRullen R, Koch C, Perona P. Rapid natural scene categorization in the near absence of attention. Proc Natl Acad Sci U S A. 2002 Jul 9;99(14):9596-601. Full text.

 

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Mar 6     Student presentations

 

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Mar 12    Spring break

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Mar 19   


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Mar 26

 

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Apr 2      

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Apr 9    

 

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Apr 16   

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This page is maintained by Ennio Mingolla

Please direct questions to: ennio @ cns.bu.edu