HOME >> BIOLOGY >> NEWS
Binocular rivalry: Fulfilling visual expectations

It is common to say "I can't believe my eyes" when surprised by what we see. Recent scientific evidence suggests that we are right to be sceptical and that what we see depends in no small part on what we expect to see. In new work reported this week, researchers have made headway in understanding how signaling in the brain allows expectation to influence visual perception.

It is normal to think of vision as beginning with the formation of an image on the back of the eye, which in turn stimulates a cascade of nerve impulses that "feed forward" to send signals deep into the brain. It is in the brain's visual cortex that these signals are interpreted. Signals in the visual cortex also travel in the opposite, "feedback," direction, but much less is known about the function of these signals. A recent study by graduate students Tamara Watson and Joel Pearson and their supervisor Dr. Colin Clifford at the University of Sydney suggests that these feedback signals carry information about what we expect to see and that these signals act to constrain our interpretation of incoming visual information.

The separation between our eyes gives us two slightly different views of the world. Ordinarily, our brain will fuse these two views to add depth to our visual world. However, if the two eyes' images are so different that they cannot be fused, we experience "binocular rivalry" a process in which one eye's image is perceived and the other's is suppressed. Every few seconds, perception switches spontaneously between the two images. While binocular rivalry is rarely encountered in the normal visual environment, it provides a useful means of probing the workings of the visual parts of our brain: although an experimental visual stimulus is artificial, the brain is functioning in its usual way. Watson, Pearson, and Clifford used binocular rivalry to demonstrate the importance of feedback in our interpretation of the visual image.

For two images to genera
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
20-Sep-2004


Page: 1 2

Related biology news :

1. Scientists visualise cellular handmaiden that restores shape to proteins
2. Despite darkness, nocturnal bees learn visual landmarks while foraging at night
3. Method to visualize gene activity may provide insight into normal development & genome function
4. Yale scientists visualize details of how hepatitis C unwinds RNA
5. Yale scientists visualize molecular detail of RNA splicing complex
6. Study in flies allows researchers to visualize formation of a memory
7. Study sheds light on critical relay in visual circuit of the brain
8. Rapid movements of living biomolecules visualised
9. First draft of periodic table of protein structures helps visualize natures universe of proteins
10. Barn owls steer Stanford researcher to clues about visual and auditory mapping
11. From da Vinci to Monet: Understanding how artists can manipulate the human visual system

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/10/2019)... BOSTON (PRWEB) , ... January 10, 2019 , ... When ... company Asymmetrex , was invited to contribute a chapter to the new book ... “I wanted to continue Asymmetrex’s effort to address a debilitating secret of stem cell ...
(Date:1/8/2019)... ... January 07, 2019 , ... ... is proud to welcome Thomas Kennedy as head of sales and business development ... PureWay. , Mr. Kennedy has previously worked for Johnson & Johnson Medical, Globus ...
(Date:1/7/2019)... ... 07, 2019 , ... Franz Inc. , an early ... Knowledge Graphs solutions, announced that it was recognized by Database Trends and ... and information management recognition list includes newer approaches leveraging artificial intelligence, machine learning, ...
Breaking Biology News(10 mins):
(Date:12/20/2018)... (PRWEB) , ... December 20, 2018 , ... New Year’s ... with major changes in regulations in the European Union (EU) on the horizon, Jim ... to consider. , “The transition to the EU Medical Device Regulation (MDR), digital health, ...
(Date:12/18/2018)... , ... December 18, 2018 , ... ... process optimization firm for the life sciences industry, unveiled a completely redesigned website ... creating a more user-friendly browsing experience for their valued clients and business partners. ...
(Date:12/13/2018)... ... December 12, 2018 , ... RURO, ... solutions, announces the Limfinity® ML (Machine Learning) addition for its Limfinity® 7 framework. ... within Limfinity® solutions. In the module, trained models make predictions based on user ...
(Date:12/5/2018)... ... December 05, 2018 , ... Leading authority on how to bridge the gap ... “The Referral Playbook: How to Increase Sales with Proven Networking Strategies.” ... to the Alzheimer’s Foundation of America (AFA). , Itzkowich is hosting “The Referral ...
Breaking Biology Technology:
Cached News: