Navigation Links
New study examines how rearing environment can alter navigation
Date:8/14/2007

Many animals, including humans, frequently face the task of getting from one place to another. Although many navigational strategies exist, all vertebrate species readily use geometric cues; things such as walls and corners to determine direction within an enclosed space. Moreover, some species such as rats and human children are so influenced by these geometric cues that they often ignore more reliable features such as a distinctive object or colored wall.

This surprising reliance on geometry has led researchers to suggest the existence of a geometric module in the brain. However, since both humans and laboratory animals typically grow up in environments not entirely made up of right angles and straight lines, the prevalent use of geometry could reflect nurture rather than nature.

A new study published in the July issue of Psychological Science, a journal of the Association for Psychological Science, is the first attempt to examine whether early exposure to strong geometric cues influences navigational strategy.

Alisha Brown, a psychology graduate student at the University of Alberta, raised fish in either a rectangular tank, or a circular tank free of angular information. Brown and her colleagues later trained the fish to swim to one particular corner of a rectangular-shaped test arena with either all white walls (geometric information only), or one colored wall (featural and geometric information).

Their results demonstrated that the ability to use geometry to aid navigation did not depend on exposure to angular geometry during rearing: in the featureless test arena, fish from both rectangular and circular rearing tanks used geometry to navigate. However, when features were present to help navigation, the circle-reared fish were more likely to depend on the feature even if it meant choosing a geometrically incorrect corner.

The researchers concluded that the ability to learn about geometry for navigation seems to be innate, but the use of geometric cues to navigate is determined by both nature and nurture. When reared in the absence of rectangular geometric structures, fish show a greater dependence on features for navigational guidance.


'/>"/>
Contact: Jesse Erwin
jerwin@psychologicalscience.org
202-783-2077
Association for Psychological Science
Source:Eurekalert

Related biology news :

1. Bioartificial kidney under study at MCG
2. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
3. W.M. Keck Foundation funds study of friendly microbes
4. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
5. Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs
6. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
7. Study Demonstrates Gene Expression Microarrays are Comparable and Reproducible
8. Study Links Ebola Outbreaks To Animal Carcasses
9. Genome-wide mouse study yields link to human leukemia
10. Breakthrough Microarray-based Technology for the Study of Cancer
11. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/15/2016)... , March 15, 2016 ... report published by Transparency Market Research "Digital Door Lock Systems ... Forecast 2015 - 2023," the global digital door lock systems ... Mn in 2014 and is forecast to grow at a ... of micro, small and medium enterprises (MSMEs) across the world ...
(Date:3/14/2016)... NXTD ) ("NXT-ID" or the "Company"), a company ... of a new series of commercials on Time Warner Cable ... .  The commercials will air on Bloomberg TV, Fox Business ... show. --> NXTD ) ("NXT-ID" or the "Company"), ... the airing of a new series of commercials on Time ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ) - ... Images ( http://www.apimages.com ) - Germany . ... new refugee identity cards. DERMALOG will be unveiling this device, and ... Hanover next week.   --> Germany ... the new refugee identity cards. DERMALOG will be unveiling this device, ...
Breaking Biology News(10 mins):
(Date:5/2/2016)... CA (PRWEB) , ... May 02, 2016 , ... StarNet ... solutions today announced the addition of three Secure Remote Desktop modules to its flagship ... remote desktops from Linux and Unix servers to the user’s PC over encrypted SSH. ...
(Date:4/29/2016)... ALBANY, New York , April 29, 2016 ... market report published by Transparency Market Research "Separation ... Analysis, Size, Share, Growth, Trends, and Forecast 2015 ... market was valued at US$ 10,665.5 Mn in ... CAGR of 6.8% from 2015 to 2023 to ...
(Date:4/28/2016)... The report "Cryocooler Market by ... (Technical Support, Product Repairs & Refurbishment, Preventive Maintenance, and ... 2022", published by MarketsandMarkets, the global market is expected ... a CAGR of 7.29% between 2016 and 2022. ... Figures spread through 159 Pages and in-depth TOC on ...
(Date:4/28/2016)... ... April 28, 2016 , ... Morris Midwest ... house for regional manufacturers at its Maple Grove, Minnesota technical center, May 11-12. ... Chiron and Trumpf. Almost 20 leading suppliers of tooling, accessories, software and ...
Breaking Biology Technology: