HOME >> BIOLOGY >> NEWS
Eye strips images of all but bare essentials before sending visual information to brain, UC Berkeley research shows

The eye as a camera has been a powerful metaphor for poets and scientists alike, implying that the eye provides the brain with detailed snapshots that form the basis for our rich experience of the world.

Recent studies at the University of California, Berkeley, however, show that the metaphor is more poetic than real. What the eye sends to the brain are mere outlines of the visual world, sketchy impressions that make our vivid visual experience all the more amazing.

"Even though we think we see the world so fully, what we are receiving is really just hints, edges in space and time," said Frank S. Werblin, professor of molecular and cell biology in the College of Letters & Science at UC Berkeley. Werblin is part of UC Berkeley's Health Sciences Initiative, a collaboration among researchers throughout the campus to tackle some of today's major health problems.

The brain interprets this sparse information, probably merging it with images from memory, to create the world we know, he said.

In a paper in the March 29 issue of Nature, doctoral student Botond Roska, M.D., and Werblin provide evidence for between 10 and 12 output channels from the eye to the brain, each carrying a different, stripped-down representation of the visual world.

"These 12 pictures of the world constitute all the information we will ever have about what's out there, and from these 12 pictures, which are so sparse, we reconstruct the richness of the visual world," Werblin said. "I'm curious how nature selected these 12 simple movies and how it can be that they are sufficient to provide us with all the information we seem to need."

While scientists have known that the eye forwards several parallel representations of the world to the brain, what these are and how they are produced has been a mystery.

"What we have done," Roska said, "is show that the retina creates a stack of image representations, how these image representations are forme
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
27-Mar-2001


Page: 1 2 3 4

Related biology news :

1. Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
2. New technique images gene expression in mice
3. Brain links non-food images with eating -- But only when hungry, study suggests
4. First-ever images of developing dengue virus obtained at Purdue
5. High-speed images show how cells mobilize for immune response
6. Researchers record first pheromone images in brains of mice
7. UIC scientists provide first images of HIV in living cells
8. Brains method of creating mental images differs with the source of cues received
9. Dispatches and images available: Human impact on giant panda habitat
10. Three-D images shed light on first steps of RNA synthesis
11. New x-ray technique images cartilage, may lead to earlier diagnosis of osteoarthritis

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


(Date:1/10/2019)... ... January 10, 2019 , ... When Dr. James L. ... , was invited to contribute a chapter to the new book Perinatal Stem Cells: ... continue Asymmetrex’s effort to address a debilitating secret of stem cell medicine. For ...
(Date:1/8/2019)... ... January 07, 2019 , ... Sonion ... for hearing instruments and specialty earphones, and Valencell , the leading innovator ... receiver in canal with an embedded biometric sensor. The BiometRIC measures key vital ...
(Date:1/4/2019)... WORTH, Texas (PRWEB) , ... January 02, 2019 ... ... catalog. This release is particularly noteworthy, as the life science tools and service ... history, it is offering a catalog. The catalog features not just part numbers ...
Breaking Biology News(10 mins):
(Date:1/20/2019)... Milwaukee (PRWEB) , ... January 17, 2019 , ... The ... release of its Patient Education program , a new initiative for 2019. Designed ... is designed to educate and inform patients, families, and the public on the status ...
(Date:1/15/2019)... BROOK, Ill. (PRWEB) , ... January 15, 2019 , ... ... risk factors for worsening kidney disease, according to a new study published in the ... stage and are frequently treated with partial nephrectomy, a surgical procedure in which the ...
(Date:1/11/2019)... ... January 11, 2019 , ... Drawing on over 22 years of software ... at 2:30pm EST will explore some of the key lessons that have driven customer ... vs. using multiple vendors, and find out how to ensure that you continue to ...
(Date:1/10/2019)... ... January 08, 2019 , ... VGI Medical was founded ... a leader in bringing innovation to the market including VerteLoc, CerLoc, SiJoin and VerteLP. ... joint by utilizing a unique patented dual geometric design to limit motion of the ...
Breaking Biology Technology:
Cached News: