Featured Research

from universities, journals, and other organizations

Language Feature Unique To Human Brain Identified

Date:
March 24, 2008
Source:
Emory University
Summary:
Researchers have identified a language feature unique to the human brain that is shedding light on how human language evolved. The study marks the first use of diffusion tensor imaging, a noninvasive imaging technique, to compare human brain structures to those of chimpanzees, our closest living relative.

Researchers have compared human brain structures to those of chimpanzees to identify a language feature unique to the human brain that is shedding light on how human language evolved.
Credit: iStockphoto/Igor Karon

Researchers at the Yerkes National Primate Research Center, Emory University, have identified a language feature unique to the human brain that is shedding light on how human language evolved. The study marks the first use of diffusion tensor imaging (DTI), a non-invasive imaging technique, to compare human brain structures to those of chimpanzees, our closest living relative.

Related Articles


To explore the evolution of human language, Yerkes researcher James Rilling, PhD, and his colleagues studied the arcuate fasciculus, a pathway that connects brain regions known to be involved in human language, such as Broca's area in the frontal lobe and Wernicke's area in the temporal lobe. Using DTI, researchers compared the size and trajectory of the arcuate fasciculus in humans, rhesus macaques and chimpanzees.

According to Rilling, "The human arcuate fasiculus differed from that of the rhesus macaques and chimpanzees in having a much larger and more widespread projection to areas in the middle temporal lobe, outside of the classical Wernicke's area. We know from previous functional imaging studies that the middle temporal lobe is involved with analyzing the meanings of words. In humans, it seems the brain not only evolved larger language regions but also a network of fibers to connect those regions, which supports humansΥ superior language capabilities."

"This is a landmark," said Yerkes researcher Todd Preuss, PhD, one of the study's coauthors. "Until DTI was developed, scientists lacked non-invasive methods to study brain connectivity directly. We couldn't study the connections of the human brain, nor determine how humans resemble or differ from other animals. DTI now makes it possible to understand how evolution changed the wiring of the human brain to enable us to think, act and speak like humans."

The study will be published in the online version of Nature Neuroscience.


Story Source:

The above story is based on materials provided by Emory University. Note: Materials may be edited for content and length.


Cite This Page:

Emory University. "Language Feature Unique To Human Brain Identified." ScienceDaily. ScienceDaily, 24 March 2008. <www.sciencedaily.com/releases/2008/03/080323210220.htm>.
Emory University. (2008, March 24). Language Feature Unique To Human Brain Identified. ScienceDaily. Retrieved April 24, 2015 from www.sciencedaily.com/releases/2008/03/080323210220.htm
Emory University. "Language Feature Unique To Human Brain Identified." ScienceDaily. www.sciencedaily.com/releases/2008/03/080323210220.htm (accessed April 24, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Friday, April 24, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Judge OKs 65-Year Deal Over NFL Concussions

Judge OKs 65-Year Deal Over NFL Concussions

AP (Apr. 23, 2015) — A judge has approved a potential $1 billion plan to resolve thousands of NFL concussion lawsuits filed by retired players. The NFL expects 6,000 of nearly 20,000 retired players to suffer from Alzheimer&apos;s disease or moderate dementia someday.(April 23) Video provided by AP
Powered by NewsLook.com
Research Says Complex Tools Might Not Be 'Our Thing' Anymore

Research Says Complex Tools Might Not Be 'Our Thing' Anymore

Newsy (Apr. 21, 2015) — The use of complex tools has often been seen as a defining characteristic of humanity, but that notion is now in question. Video provided by Newsy
Powered by NewsLook.com
Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) — Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Scientists Find Link Between Gestational Diabetes And Autism

Scientists Find Link Between Gestational Diabetes And Autism

Newsy (Apr. 17, 2015) — Researchers who analyzed data from over 300,000 kids and their mothers say they&apos;ve found a link between gestational diabetes and autism. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins