Ehud Zohary Lab

ELSC Members

Dr. G. Levi de Veali Chair in Neurobiology
The Swiss Friends Vision Laboratory, Linking Perception, Memory and Action

Welcome to Ehud Zohary’s Lab. Our research is focused on how our brain generates a representation of the world around us, combining incoming perceptual information with memory-based expectations (of what it should be), to act on it. Consider the demo you’ve just seen,  showing a visual scene, typical scanning patterns, and the image generated on your retina. The visual image is heavily blurred in the periphery. We therefore constantly scan the visual scene with our eyes. thereby generating a novel retinal image with every new eye movement. Incredibly, our brain seamlessly generates a stable representation of the visual scene in spite of this jerky and incomplete visual information. This perceptual stability is so robust that we live in an illusion that we see everything at the highest precision all at once. In our laboratory  we conduct experiment trying to gain further understanding of the phenomenon.

We are also interested in understanding changes in cortical representations. For example: how do the blind construct a world image? What happens to their “visual” cortex? How does our brain generate a body image? how does it change following amputation? Learn more about this and other projects.

What do we study? (one example)

The visual image is heavily blurred in the periphery (the fovea, a region with highest visual acuity, is limited to the central ~2 degrees of the visual field). One of our means to compensate for this limitation is to constantly scan the visual scene, making about 3 saccades in a second, thereby generating a novel retinal image is changing with every new eye movement. Incredibly, our brain seamlessly generates a stable representation of the visual scene in spite of this jerky and incomplete visual information. This perceptual stability is so robust that we live in an illusion that we see everything at the highest precision all at once.

How does our brain perform this?

ZW-1ZW-2

More projects:

– Eye opener project: Vision following late emergence from congenital blindness – click here for the project’s website

– Visual perception, memory & eye movements

– Action observation

We thank the following agencies and private foundations for their generous support in the past & present: Israel-US Binational foundation (BSF);  Israel Science Foundation, The McDonell Foundation, The Dana  Foundation, & Israel National Institute for Psychobiology.

Ehud Zohary

Professor

Phone: +972-2-6586737
Fax: +972-2-6584985
Lab Phone: +972-2-6585152
Address: The Edmond and Lily Safra Center for Brain Sciences,
The Suzanne and Charles Goodman Brain Sciences Building,
Level 2, Room 2101, Edmond J. Safra Campus,
The Hebrew University Jerusalem, 9190401
Dr. G. Levi de Veali Chair in Neurobiology
The Swiss Friends Vision Laboratory, Linking Perception, Memory and Action

Welcome to Ehud Zohary’s Lab. Our research is focused on how our brain generates a representation of the world around us, combining incoming perceptual information with memory-based expectations (of what it should be), to act on it. Consider the demo you’ve just seen,  showing a visual scene, typical scanning patterns, and the image generated on your retina. The visual image is heavily blurred in the periphery. We therefore constantly scan the visual scene with our eyes. thereby generating a novel retinal image with every new eye movement. Incredibly, our brain seamlessly generates a stable representation of the visual scene in spite of this jerky and incomplete visual information. This perceptual stability is so robust that we live in an illusion that we see everything at the highest precision all at once. In our laboratory  we conduct experiment trying to gain further understanding of the phenomenon.

We are also interested in understanding changes in cortical representations. For example: how do the blind construct a world image? What happens to their “visual” cortex? How does our brain generate a body image? how does it change following amputation? Learn more about this and other projects.

What do we study? (one example)

The visual image is heavily blurred in the periphery (the fovea, a region with highest visual acuity, is limited to the central ~2 degrees of the visual field). One of our means to compensate for this limitation is to constantly scan the visual scene, making about 3 saccades in a second, thereby generating a novel retinal image is changing with every new eye movement. Incredibly, our brain seamlessly generates a stable representation of the visual scene in spite of this jerky and incomplete visual information. This perceptual stability is so robust that we live in an illusion that we see everything at the highest precision all at once.

How does our brain perform this?

ZW-1ZW-2

More projects:

– Eye opener project: Vision following late emergence from congenital blindness – click here for the project’s website

– Visual perception, memory & eye movements

– Action observation

We thank the following agencies and private foundations for their generous support in the past & present: Israel-US Binational foundation (BSF);  Israel Science Foundation, The McDonell Foundation, The Dana  Foundation, & Israel National Institute for Psychobiology.

Tanya_orlov
Tanya Orlov
Senior Researcher
Daniel_Houry
Daniel Houry
MSc Student
Ilana_Nave
Ilana Nave
PhD Student
Lior_Aloni
Lior D. Aloni
MSc Student
Sara_attias
Sara Attias
PhD Student
Maayan_raveh
Maayan Raveh
PhD Student
Asael_sklar
Asael Sklar
Post Doc
A McKyton, I Ben-Zion, E Zohary

Psychological Science, 29(2), 304–310. (2018)

A Mann, I Naveh, E Zohary

Vision Research, Volume 150, Pages 15-23 (2018)

E Andres, A McKyton, I Ben-Zion, E Zohary

Current Biology, Volume 27, Issue 14, Pages R696-R697 (2017)

Porat, Y, Zohary E.

Proc Natl Acad Sci U S A;113(46):E7327-E7336 (2016)

Seidel Malkinson T, Pertzov Y, Zohary E.

Front Psychol; 7:165. doi: 10.3389/fpsyg.2016.00165. (2016)

Roth ZN, Zohary E.

Cereb Cortex. 2015 Sep;25(9):2427-39. Epub 2014 Mar 31. (2015)

McKyton A, Ben-Zion I, Doron R, Zohary E.

Curr Biol. 25(18):2373-8. (2015)

Orlov T, Porat Y, Makin TR, Zohary E.

Journal of Neuroscience 2 April 2014, 34 (14) 4882-4895; (2014)

Moreh E, Malkinson TS, Zohary E, Soroker N.

J Cogn Neurosci. 2014 Sep;26(9):2155-70. (2014)

Seidel Malkinson T, McKyton A, Zohary E.

J Vis. 2012 Jun 22;12(6). pii: 30. (2012)

Pertzov Y, Avidan G, Zohary E.

J Neurosci. 2011 Jan 19;31(3):1059-68 (2011)

15. Eisenberg M, Shmuelof L, Vaadia E, Zohary E.

Journal of Neuroscience, 31 (34) 12377-12384; (2011)

Porat Y, Pertzov Y, Zohary E.

J Vis. 2011 Oct 21;11(12):17 (2011)

Makin TR, Wilf M, Schwartz I, Zohary E.

Psychol Sci. 2010 Jan;21(1):55-7 (2010)

Amedi A, Raz N, Azulay H, Malach R, Zohary E.

Restor Neurol Neurosci. 2010;28(2):143-56. (2010)

Eisenberg M, Shmuelof L, Vaadia E, Zohary E.

J Neurosci. 2010 Jun 30;30(26):8897-905 (2010)

Pertzov Y, Zohary E, Avidan G.

J Neurosci. 2010 Jun 30;30(26):8882-7 (2010)

Orlov T, Makin TR, Zohary E.

Neuron. 2010 Nov 4;68(3):586-600 (2010)

We are always looking for bright and motivated students, who have keen interest in Cognitive and Systems Neuroscience. Computational/analytical background is a major advantage. Please email Ehud Zohary if you qualify.
We thank the following agencies and private foundations for their generous support in the past & present: Israel-US Binational foundation (BSF); Israel Science Foundation, The German-Israeli Project (DFG), The McDonnell Foundation, The Dana Foundation, The Israel National Institute for Psychobiology.

Website:
Ehud Zohary

https://www.project-eyeopener.org

Ehud Zohary

Professor

Phone: +972-2-6586737
Fax: +972-2-6584985
Lab Phone: +972-2-6585152
Address: The Edmond and Lily Safra Center for Brain Sciences,
The Suzanne and Charles Goodman Brain Sciences Building,
Level 2, Room 2101, Edmond J. Safra Campus,
The Hebrew University Jerusalem, 9190401

'Ahiam 2nd' by Boaz Vaadia