Ali Yoonessi

Assistant Professor of Neuoscience

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My interest in computation started with the usage of medical informatics while I was studying medicine in Tehran University of Medical Sciences. Over the years, this intrigued me to try to understand how the most sophisticated computational organ works. My interest is mainly focused on visual system, from low-level processing particularly color vision (my PhD thesis in McGill University)  to more processed levels such as visual attention, visual memory, and visual awareness. Currently, I am focused on the application of virtual reality as a powerful tool to assess human cognitive functions.




Assistant Professor, Department of Neuroscience, Tehran University of Medical Sciences




PhD    2003 - 2008

McGill University, Doctor of Philosophy in Neuroscience

MD     1990-1997

Tehran Medical University, Medical Doctorate



Peer-reviewed Publications


Amir Reza Radmard, Hossein Poustchi, Mehrdad Dadgostar, Ali Yoonessi, Soheil Kooraki, Elham Jafari, Amir Pejman Hashemi Taheri, Reza Malekzadeh, Shahin Merat (2015), Liver Enzyme Levels and Hepatic Iron Content in Fatty Liver: A Noninvasive Assessment in General Population by T2* Mapping, Academic radiology


AF Jadidi, R Davoodi, MH Moradi, A Yoonessi (2014), The impact of numeration on visual attention during a psychophysical task; An ERP study, Biomedical Engineering (ICBME), 2014 21th Iranian Conference on, 338-342


Fakhr Tabatabaie, A., Azadehfar, M. R., Mirian, N., Noroozian, M., Yoonessi, A., & Yoonessi, A. (2014). Neural Correlates of Boredom in Music Perception. Basic and Clinical Neuroscience, 5(4), 259–266.


Haghparast, A., & Yoonessi, A. (2014). Orexin in Addiction, Current State and Potential Clinical Applications. Journal of Substance Abuse & Alcoholism, 2(2), 1015.


Yoonessi, A., & Ekhtiari, H. (2013). Text messages as a tool for assessing public concern about drug problems. International Journal of Drug Policy, 24(6), 624–627.


Davoodi, R., Moradi, M. H., & Yoonessi, A. (2012). Neural correlates of attention differ from consciousness during a novel psychophysical task. In Biomedical Engineering (ICBME), 2012 19th Iranian Conference of (pp. 339–343). IEEE.


Yoonessi, A., Hajihasani, M., Gharibzadeh, S., Zarrindast, M., & Yoonessi, A. (2012). Efficiency of Information Coding in Various L/M Retinal Cone Ratios. Basic and Clinical Neuroscience, 3(4), 22–27.


Yoonessi, A., Kalantarinezhad, R., & Joghataei, M. T. (2011). NBIC, THE CONVERGING TECHNOLOGIES. Basic and Clinical Neuroscience, 3(1), 3–3.


Younessi, P., & Yoonessi, A. (2011). Advanced glycation end-products and their receptor-mediated roles: inflammation and oxidative stress. Iranian Journal of Medical Sciences, 36(3), 154.


Yoonessi, A., & Yoonessi, A. (2011). A Glance at Psychophysics Software Programs. Basic and Clinical Neuroscience, 2(3), 73–75.


Yoonessi, A., Ekhtiari, H., Jogataei, M. T., & Pouretemad, H. R. (2011). Emergence of Cognitive Neuroscience in The Middle East. Basic and Clinical Neuroscience, 2(4), 3–4.


Yoonessi, A, Yoonessi, A, Magno, Parvo and Konio-Cellular Pathways; Current State and Future Clinical Applications, Vol 6, No 2 (2011)


Yoonessi, A, Zaidi Q, The role of color in recognizing material changes, Ophthalmic and Physiological Optics, Volume 30, Issue 5, pages 626–631, September 2010


Yoonessi, A, FAA Kingdom “Dichoptic difference thresholds for uniform photometric changes applied to natural scenes?”, Journal of Vision , 9(2):3, 1-12,, doi:10.1167/9.2.3.


Yoonessi, A., Kingdom, F. A. A. & Gheorghiu, E. Leaning Tower illusion: Orientation contrast or perspective distortion? Reply to Maniatis. Perception


Yoonessi, A, Kingdom FAA, Alqawlaq S.,“Is color patchy?”, J. Opt. Soc. Am. A, Vol. 25, Issue 6, pp. 1330-1338


Yoonessi, A. FAA Kingdom,"Comparison of sensitivity to color changes in natural and phase-scrambled scenes,". J. Opt. Soc. Am. A, 25, 676-684.


Kingdom, F. A. A., Yoonessi, A. & Gheorghiu, E. The Leaning Tower illusion. Perception


Yoonessi, A. & Kingdom, F. A. A. , Faithful representation of colours on a CRT monitor. Color Research and Applications.


Kingdom, F. A. A., Wong, K., Yoonessi, A. & Malkoc, G. Colour contrast influences perceived depth in combined shading and texture patterns. Spatial Vision, 19, 147-159.


Yoonessi, A., & Kingdom, F. A. A. Sensitivity to color and luminance transformations in real versus phase-scrambled natural scenes [Abstract]. Journal of Vision, 5(8):277, 277a,


Pourshams A, Saadatian-Elahi M, Nouraie M, Malekshah A F, Rakhshani N, Salahi R, Yoonessi , et. al, Golestan cohort study of oesophageal cancer: feasibility and first results. British Journal of Cancer (2005) 92, 176-181


Malekzadeh R, Sotoudeh M, Derakhshan MH, Mikaeli J, Yazdanbod A, Merat S, Yoonessi, et. al, Prevalence of gastric precancerous lesions in Ardabil, a high incidence province for gastric adenocarcinoma in the northwest of Iran. Journal of Clinical Pathology 2004;57:37-42.


Sotoudehmanesh, R., & Yoonessi, A. , Diagnosis of Fasciola hepatica by endoscopic ultrasound. Endoscopy, 35 (12), 1088.


Saidi F., Malekzadeh R., Sotoudeh M., Derakhshan M. H., Farahvash M. J., Yazdanbod A., Merat Sh., Mikaeli J., Sotoudehmanesh R., Nasseri-Moghadam S., Majidpour A., Arshi S., Abedi-Ardakani B., Yoonessi , et. al, Endoscopic esophageal cancer survey in the western part of the Caspian Littoral, Diseases of the Esophagus 15 (3), 214–218.






Best Visual Illusion of 2007: Kingdom, Yoonessi, Gheorghiu

Clinical Experience

Jan. 2006 – Oct. 2006

Physician , Gastroenterology dep., Tehran Medical University

1998 – 2003

Physician, Gastroenterology dep., Tehran Medical University

1999 - 2002

Physician , Family Medicine, Hashtroodian Hospital, Iran

1997 – 1999

Physician, Family Medicine, Imam Hosein Clinic, Iran

Research Experience

2008- 2009

Post Doctoral Research Fellow, McGill Vision Research

2003- 2008

PhD student, McGill Vision Research

2000 – 2003

Chief Information Officer, Digestive Disease Research Center, Tehran Medical University

1998 – 2003

Senior Researcher, Digestive Disease Research Center, Tehran Medical University

2002 - 2003

Medical Informatics Senior Researcher, Ministry of Health, Medical Informatics & Publications Department, Iran

1995 - 1996

Software Tutor, Student’s Scientific Research Center, Tehran Medical University, Iran

1990 – 1996

Programmer, Statistician, Computer Center of Medical Faculty, Tehran University of Medical Sciences

Teaching Experience

1995 - 1996

Software Tutor, Student’s Scientific Research Center, Tehran Medical University, Iran

1990 – 1996

Software Tutor, Tehran University of Medical Sciences

Peer-reviewed online publications


Kingdom, F. A. A., Yoonessi, A. & Gheorghiu, E. (2007). Leaning Tower Illusion, Scholarpedia, p26691,



XML (in Persian Language), Yoonessi A., Kashef-ol-hagh A., Mehr Publications



English (fluent), French (intermediate), Persian (Native)


Matlab, Visual Basic .Net, C++, SQL server, XML, Access, 3D-Studio, Adobe Photoshop