your eyes can also deceive you
Last Updated : GMT 06:49:16
Arab Today, arab today
Arab Today, arab today
Last Updated : GMT 06:49:16
Arab Today, arab today

Your eyes `can also deceive you`

Arab Today, arab today

Arab Today, arab today Your eyes `can also deceive you`

Washington - Arabstoday

People rely on their eyes for most things they do. But, researchers say that even your eyes can deceive you. An international team, led by the Vision Centre in Australia, says that the information provided by people`s visual sensing systems is often distorted, unreliable and subject to illusion. "We tend to regard what we see as `the real world`. In fact a lot of it is distortion, and it is occurring in the early processing of the brain, before consciousness takes over," said team leader Dr Isabelle Mareschal. He added: "Our latest work shows that the cells of the primary visual cortex create small distortions, which they then pass on to the higher levels of the brain, to interpret as best it can." A common example of this that is often exploited by artists and designers is known as the tilt illusion where perfectly vertical lines appear tilted because they are placed on an oriented background, say the researchers. For their study, the researchers analysed a series of groundbreaking experiments in which they trace the origins of the tilt illusion to the cells of the primary visual cortex -- the first stage of vision processing, before the conscious mind takes over. "We wanted to test at what level the illusion occurs in the brain, unconscious or conscious -- and also to see if the higher brain is aware of the illusions it is receiving and how it tries to correct for them. "The answer is that the brain seeks more contextual information from the background to try to work out the alignment of the object it is seeing," Dr Mareschal said. The team subjected volunteers to a complex test in which they had to indicate the orientation of a vertical line, which was perceived as constantly tilting from side to side, against a fuzzy background that was also changing. "These illusions happen very fast, perhaps in milliseconds. And we found that even the higher brain cannot always correct for them, as it doesn?t in fact know they are illusions," she added. The findings have been published in the `Proceedings of the National Academy of Science` journal.

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

your eyes can also deceive you your eyes can also deceive you

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

your eyes can also deceive you your eyes can also deceive you

 



GMT 12:13 2018 Thursday ,27 September

Yemen government ends cooperation with UN rights mission

GMT 06:21 2018 Tuesday ,23 January

Volkswagen clinches record sales

GMT 11:45 2018 Saturday ,20 January

Salam, German ambassador meet

GMT 10:33 2017 Friday ,10 March

White House presses Iran for info on ex-FBI

GMT 16:30 2016 Tuesday ,23 August

Iraq vows to review foreign energy deals

GMT 22:40 2017 Monday ,09 October

16 killed as gunmen attack Mozambique police
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday