Navigation Links
Scientists uncover how the brain controls what the eyes see

Irvine, Calif., Nov. 20 2007 Vase or face" When presented with the well known optical illusion in which we see either a vase or the faces of two people, what we observe depends on the patterns of neural activity going on in our brains.

In this example, whether you see faces or vases depends entirely on changes that occur in your brain, since the image always stays exactly the same, said John Serences, a UC Irvine cognitive neuroscientist.

In a recent study published in the Journal of Neuroscience, Serences and co-author Geoffrey Boynton, associate professor at the University of Washington, found that when viewing ambiguous images such as optical illusions, patterns of neural activity within specific brain regions systematically change as perception changes. More importantly, they found that patterns of neural activity in some brain regions were very similar when observers were presented with comparable ambiguous and unambiguous images.

The fact that some brain areas show the same pattern of activity when we view a real image and when we interpret an ambiguous image in the same way implicates these regions in creating the conscious experience of the object that is being viewed, Serences said.

Findings from their study may further contribute to scientists understanding of disorders such as dyslexia -- a case in which individuals are thought to suffer from deficiencies in processing motion -- by providing information about the functional role that specific brain regions play in motion perception.

Using functional magnetic resonance imaging (fMRI), researchers measured patterns of neural activity in the middle temporal (MT) region of the brain -- an area associated with motion perception -- under two different scenarios.

In the first, participants were asked to view objects moving only in one direction and to identify the direction in which the objects were moving (left or right). They were then presented with objects in which the direction of motion was ambiguous, or undefined, and asked to identify the main direction of motion.

The pattern of neural activity in the MT region was highly similar when an observer viewed real motion moving to the left and when they thought they saw the ambiguously moving objects moving to the left.

The close correspondence between the pattern of activation in MT and what the observer reports seeing suggests that this region of your brain plays an important role in generating conscious experience of the world around you, Serences said.


Contact: Heather Wuebker
University of California - Irvine

Related medicine news :

1. New prion protein discovered by Canadian scientists may offer insight into mad cow disease
2. Scientists Probe Sepsis Deadly Secrets
3. Scientists puzzled by severe allergic reaction to cancer drug in the middle Southern US
4. Scientists Develop Natural Protection for Stored Foods
5. Scientists detect presence of marburg virus in african fruit bats
6. Scientists Spot Brains Free Will Center
7. Scientists ID Likely Culprit in Popcorn Lung
8. Scientists explain how insulin secreting cells maintain their glucose sensitivity
9. Scripps Research scientists shed new light on how antibodies fight HIV
10. Scientists, physicians present latest findings in personalized cancer treatment and prevention
11. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
Post Your Comments:
(Date:11/27/2015)... ... 27, 2015 , ... The moment you stop improving is ... fulfilling the needs of advisers and clients but going above and beyond to ... customer service. However, there's always room for improvement, which is why the entire ...
(Date:11/27/2015)... Rosa, CA (PRWEB) , ... November 27, 2015 , ... ... Northern California Medical Associates, Inc. and Dr. Tucker Bierbaum with Emergency Medicine at ... meeting. They observed that both STEMI and Sepsis conditions present in similar ways and ...
(Date:11/26/2015)... ... 26, 2015 , ... Inevitably when people think Thanksgiving, they also think Holiday ... the Black Friday and Cyber Monday massage chair sales to receive the ... and low to find the best massage chair deals, they can see all of ...
(Date:11/26/2015)... NE (PRWEB) , ... November 26, 2015 , ... Jobs ... searched by healthcare professionals and offered by healthcare staffing agency Aureus Medical Group ... during the month of October 2015 among those searching for healthcare jobs through the ...
(Date:11/26/2015)... ... November 26, 2015 , ... ... health and wellness consultation, has collaborated with Women’s Web – an online ... queries on topics on mental and emotional well-being relationship, life balance, stress, ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... , Países Bajos, November 26, 2015 ... la terapia fotodinámica de Bremachlorin para el cáncer avanzado. ... la inmunoterapia con la terapia fotodinámica de Bremachlorin para ... Un nuevo enfoque combina la inmunoterapia con la terapia ... Clinical Cancer Research . --> ...
(Date:11/26/2015)... , Nederland, November 26, 2015 ... Een nieuwe aanpak combineert immunotherapie met ... kanker. ) ...      (Photo: ) ... Leids Universitair Medisch Centrum (LUMC) ...
(Date:11/26/2015)... , November 26, 2015 3D bioprinting ... 2022, according to a new report by Grand View Research ... Disease (CKD) which demands kidney transplantation is expected to boost ... effective substitute for organ transplantation. --> 3D bioprinting ... 2022, according to a new report by Grand View Research ...
Breaking Medicine Technology: