Navigation Links
The lopsided brain: Attention bias is shared by humans and birds

When it comes to the world laid before us, our mind's eye has a bias. For reasons that are not entirely clear, during some tasks humans have a tendency to devote more visual attention to the left side of the visual world than the right side, a phenomenon known as pseudoneglect. Researchers now report that pseudoneglect is not restricted to humans but is shared by birds, suggesting not only that brain structures thought to play a requisite role in pseudoneglect may not actually be essential for this phenomenon, but also that pseudoneglect may reflect evolutionary adaptations that allow animals to devote attention to multiple aspects of their environment.

The findings are reported in the May 24 issue of Current Biology by Bettina Diekamp (now at Johns Hopkins University) and colleagues at Ruhr University, Bochum, Germany; the University of Padova, Italy; and The University of Trieste, Italy.

It has been known for some time that human patients who have suffered injury to the brain's right hemisphere can experience a much more severe bias in their spatial attention--spatial hemineglect--in which the entire left side of the visual world seems nonexistent as the brain performs spatial tasks. In a classic example, a patient asked to draw a daisy can only manage to put petals on the right side of her drawing.

The more subtle leftward bias in attention present in healthy humans likely has to do with asymmetries in the wiring of the brain's attention in the two hemispheres; the new finding in birds offers some insight into how and why this might be.

In the new work, researchers tested two bird species, the domestic chick and the pigeon, for their performance on a task in which they were allowed to freely peck at grains of food that were spread evenly in an area before them. Though the birds' bodies were positioned at the midline of the search area, both chicks and pigeons showed a considerable leftward bias in pecking. The experiment is similar
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
2. Attention shoppers: Researchers find neurons that encode the value of different goods
3. Ancient olfaction protein is shared by many bugs, offering new pest control target
4. A new study examines how shared pathogens affect host populations
5. Bird flu -- Call for antiviral drugs to be shared
6. Yale researchers identify molecule for detecting parasitic infection in humans
7. Friendly bacteria in humans may protect against HIV
8. Oldest cranial, dental and postcranial fossils of early modern European humans confirmed
9. Retrovirus struck ancestors of chimpanzees and gorillas millions of years ago, but did not affect ancestral humans
10. UI researcher studies deafness in fruit flies, humans
11. Chickadees can help humans get their bearings
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The lopsided brain Attention bias shared humans and birds

(Date:4/13/2015)... April 13, 2015  higi, a leading cloud-based consumer ... more fully engage with their communities around health and ... protected and secure API.  ... most accessible, affordable, and convenient vehicle to receive validated ... The API will allow higi,s trusted ...
(Date:4/8/2015)... N.C. , April 8, 2015  Infinisource, ... solutions and services, and Morpho, a leading supplier ... partnership to produce the market,s most advanced biometrically-enabled ... Infinisource,s iSolved NXG time clock is setting a ... and labor data for the small and mid-size ...
(Date:4/2/2015)... -- At its 2015 ACMG Annual Clinical Genetics Meeting ... American College of Medical Genetics and Genomics (ACMG) announced ... Members of the ACMG Board of Directors serve as ... its policies and programs. ACMG is the national organization ... eventful time in medical genetics and genomics.  We are ...
Breaking Biology News(10 mins):higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 3American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 4American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 5American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 6American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 7American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 8
... essential nutrient and a pollutant, a byproduct of fossil ... benefit and a hazard, depending on form, location, and ... around the planet, say sixteen scientists in the latest ... "Excess Nitrogen in the U.S. Environment: Trends, Risks, and ...
... simple experiment, University of Illinois chemists have debunked a ... by chemistry professor and Howard Hughes Medical Institute early ... top drug for treating systemic fungal infections works by ... physiology, a finding that could change the direction of ...
... sex of a fetus until after 30 weeks of pregnancy ... groups in Canada and the United States, states an editorial ... Female feticide that is, choosing to abort female ... issue in several Asian countries including India, China, Korea and ...
Cached Biology News:Solutions for a nitrogen-soaked world 2Powerful drug's surprising, simple method could lead to better treatments 2Powerful drug's surprising, simple method could lead to better treatments 3Female feticide in Canada requires action 2
(Date:5/1/2015)... 2015 Pfenex Inc. (NYSE MKT: PFNX), ... of biosimilar therapeutics including high value and difficult ... quarter 2015 financial results will be released on ... market. At 8:30 am Eastern Time, Pfenex management will ... results and provide a business update. A press release ...
(Date:5/1/2015)... LONDON , May 1, 2015 ... world market for antithrombotic drugs will reach $22.4bn in ... Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 ... purpose of that investigation is to provide forecasts and ... a business information publisher and consultancy in ...
(Date:5/1/2015)... , May 1, 2015 Albany Molecular ... William S. Marth , AMRI,s President and Chief ... Merrill Lynch 2015 Health Care Conference on Wednesday, May ... live audio webcast of the presentation can be accessed ... The webcast will be archived for ...
(Date:5/1/2015)... and RESEARCH TRIANGLE PARK, N.C. ... UTHR ) announced today that Roger Jeffs , Ph.D., ... an overview and update on the company,s business at the ... Boston, Massachusetts . The presentation ... PM Eastern Time, and can be accessed via a live ...
Breaking Biology Technology:Pfenex To Report First Quarter 2015 Results and Provide Business Update on Thursday, May 14, 2015 2Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 2Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 3Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 4Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 5AMRI to Present at the Bank of America Merrill Lynch 2015 Health Care Conference 2
... 2011 Bio-Research Products announced today that it is adding ... its product line. The new Glutathione Reductase offers customers a ... liquid (#801) GR enzyme. Both versions are free of ammonium ... IU/mg protein and an enzyme activity of 300 IU/mL. ...
... Inc. (OTCBB: UGNE), a leader in ... announced that Ashleigh Palmer, President and Chief Executive Officer, ... Annual Oppenheimer Healthcare Conference being held in New York ... 4:10 p.m. ET on Tuesday, December 13, 2011. ...
...  Coronado Biosciences, Inc., (OTCBB: CNDO), a biopharmaceutical company ... for the treatment of autoimmune diseases and cancer, ... the Company,s President, Chief Executive Officer and Director, ... Conference on Wednesday, December 14, 2011 at 10:30 ...
Cached Biology Technology:Unigene to Present at the Oppenheimer 22nd Annual Healthcare Conference on December 13, 2011 2Coronado Biosciences to Present at the Oppenheimer 22nd Annual Healthcare Conference 2