Navigation Links
When one side does not know about the other one
Date:3/1/2012

Whenever we are doing something, one of our brain hemispheres is more active than the other one. However, some tasks are only solvable with both sides working together. PD Dr. Martina Manns and Juliane Rmling of the Ruhr-Universitt Bochum are investigating, how such specializations and co-operations arise. Based on a pigeon-model, they are proving for the first time in an experimental way, that the ability to combine complex impressions from both hemispheres, depends on environmental factors in the embryonic stage. The results of the study are published online in Nature Communications.

Biased light stimulation

Within the egg bird embryos always turn their head in such a way that one eye is turned close to the eggshell, and the other one is covered by the body. This causes an asymmetrical light stimulation, which influences developmental processes in both brain halves. PD Dr. Manns uses this mechanism for her experiment. One group of embryos hatch in a lighted incubator, another one in complete darkness. Afterwards the scientists analyze the degree of interhemispheric communication in both groups. The results show that information exchange is impaired without light-stimulation. This research sheds light on the origin of communication processes in the brain. Developmental disorders like ADHD or autism are characterized by a deviating pattern between the two brain halves. Therefore, there is a possibility that the results may help to understand those disorders and give hints for new therapeutic approaches.

Classification of colour-pairs

To determine how efficient the animals are able to handle incoming information, Manns and Rmling confront the animals with a task that can only be solved with both brain hemispheres working together. For that purpose, the two psychologists use colour-pairs of a transitive line (A>B>C>D>E) at which one of the elements is rewarded with food. First the pigeons have to learn to discriminate the combinations A/B and B/C with one eye, and C/D and D/E with the other one. Afterwards, they can use both eyes to decide between, for example, the colours B/D. However, only birds with embryonic light experience are able to solve this problem.


'/>"/>

Contact: Dr. Martina Manns
Martina.Manns@rub.de
49-234-322-4634
Ruhr-University Bochum
Source:Eurekalert

Related biology news :

1. NJIT invites manufacturers to free summit about clean energy
2. A bugs (sex) life: Diving beetles offer unexpected clues about sexual selection
3. New website shares information about deadly tree pathogens
4. Global experts question claims about jellyfish populations
5. Survey tracks 55+ attitudes about the environment
6. The good news about carbon storage in tropical vegetation
7. Penn researchers help solve questions about Ethiopians high-altitude adaptations
8. New findings by St. Michaels researchers about the way cells work
9. Study of skates and sharks questions assumptions about essential genes
10. Dinosaurs with killer claws yield new theory about flight
11. Penn geneticists help show bitter taste perception is not just about flavors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/8/2016)... MANCHESTER, United Kingdom , Jan. 8, 2016 ... innovative sensor-based diagnostic products, today announced the closing of a ... existing investors.  Proceeds from the financing will be used to ... hand-held device for detecting early-stage pressure ulcers. ... after receiving CE Mark approval. The device,s introduction has ...
(Date:1/7/2016)... , Jan. 7, 2016 This BCC Research ... for biometric technologies and devices, identifying newer markets and ... various types of biometric devices. Includes forecast from 2015 ... Identify newer markets and explore the expansion of the ... Examine each type of biometric technology, determine its current ...
(Date:1/7/2016)... -- A United States District Court in Illinois ... to interpret a biometric privacy statute in a decision ... photo website Shutterfly brought by the law firm Carey Rodriguez ... SHUTTERFLY, INC.; and THISLIFE, INC ( N.D. Ill ., ... Illinois Biometric Privacy Act by collecting and scanning face ...
Breaking Biology News(10 mins):
(Date:2/3/2016)...   ViaCyte, Inc ., a leading, privately-held ... cell-derived islet replacement therapy for the treatment of ... that ViaCyte and Janssen Biotech, Inc., one of ... have agreed to consolidate the assets of the ... ViaCyte with an exclusive license to all BetaLogics ...
(Date:2/3/2016)... BRUNSWICK, N.J. , Feb. 3, 2016 /PRNewswire-USNewswire/ ... grants totaling more than $1 million for researchers ... are working on health-related research that demonstrates exciting ... this round of funding for the New Jersey ... for faculty members at these educational institutions— Princeton ...
(Date:2/3/2016)... MEDFORD, Mass. , Feb. 3, 2016  Silk Therapeutics, ... A2 financing round. Silk Therapeutics has now raised a total ... progress made by the company. The Series A2 round was ... Foxboro, Massachusetts , with participation from new investors Lear ... Sheri and Roy P. Disney ; Richard Sackler ...
(Date:2/3/2016)... ... February 03, 2016 , ... Big games come and go, but ... much for our country. CereScan, a nationally recognized brain diagnostics and technology company, will ... Football Team (WWAFT) vs. NFL Stars Flag Football Game on February 6, 2016. ...
Breaking Biology Technology: