Featured Research

from universities, journals, and other organizations

Neurological Differences Support Dyslexia Subtypes

Date:
June 26, 2009
Source:
BioMed Central
Summary:
Parts of the right hemisphere of the brains of people with dyslexia have been shown to differ from those of normal readers. Researchers used magnetic resonance imaging to compare the two groups, and were able to associate the neurological differences found with different language difficulties within the dyslexic group.

Parts of the right hemisphere of the brains of people with dyslexia have been shown to differ from those of normal readers. Researchers have used magnetic resonance imaging (MRI) to compare the two groups, and were able to associate the neurological differences found with different language difficulties within the dyslexic group.

Cyril Pernet, from the University of Edinburgh, worked with a team of researchers to compare the brains of 38 people with dyslexia to a model 'typical brain' created by combining the scans of 39 normal readers. In all cases, differences could be seen in either the right cerebellar declive or the right lentiform nucleus. These were associated with varying performance in language tests.

It is increasingly accepted that dyslexia is not a unique entity, but might reflect different neuro-cognitive pathologies. Researchers have been looking for a way to distinguish between different types of dyslexia for several years, and this research is among the first to show a direct link between brain structure and symptom severity. According to Pernet, "These results provide evidence for the existence of various subtypes of dyslexia characterized by different brain phenotypes. In addition, behavioral analyses suggest that these brain phenotypes relate to different deficits of automatization of language-based processes such as grapheme/phoneme correspondence and/or rapid access to lexicon entries".


Story Source:

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


Journal Reference:

  1. Cyril R Pernet, Jean Baptiste Poline, Jean Francois Demonet and Guillaume A Rousselet. Brain classification reveals the right cerebellum as the best biomarker of dyslexia. BMC Neuroscience, (in press) [link]

Cite This Page:

BioMed Central. "Neurological Differences Support Dyslexia Subtypes." ScienceDaily. ScienceDaily, 26 June 2009. <www.sciencedaily.com/releases/2009/06/090624193502.htm>.
BioMed Central. (2009, June 26). Neurological Differences Support Dyslexia Subtypes. ScienceDaily. Retrieved August 27, 2014 from www.sciencedaily.com/releases/2009/06/090624193502.htm
BioMed Central. "Neurological Differences Support Dyslexia Subtypes." ScienceDaily. www.sciencedaily.com/releases/2009/06/090624193502.htm (accessed August 27, 2014).

Share This




More Mind & Brain News

Wednesday, August 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Alice in Wonderland Syndrome

Alice in Wonderland Syndrome

Ivanhoe (Aug. 27, 2014) It’s an unusual condition with a colorful name. Kids with “Alice in Wonderland” syndrome see sudden distortions in objects they’re looking at or their own bodies appear to change size, a lot like the main character in the Lewis Carroll story. Video provided by Ivanhoe
Powered by NewsLook.com
Stopping Schizophrenia Before Birth

Stopping Schizophrenia Before Birth

Ivanhoe (Aug. 27, 2014) Scientists have long called choline a “brain booster” essential for human development. Not only does it aid in memory and learning, researchers now believe choline could help prevent mental illness. Video provided by Ivanhoe
Powered by NewsLook.com
Personalized Brain Vaccine for Glioblastoma

Personalized Brain Vaccine for Glioblastoma

Ivanhoe (Aug. 27, 2014) Glioblastoma is the most common and aggressive brain cancer in humans. Now a new treatment using the patient’s own tumor could help slow down its progression and help patients live longer. Video provided by Ivanhoe
Powered by NewsLook.com
Brain Surgery in 3-D

Brain Surgery in 3-D

Ivanhoe (Aug. 27, 2014) Neurosurgeons now have a new approach to brain surgery using the same 3D glasses you’d put on at an IMAX movie theater. Video provided by Ivanhoe
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:
from the past week

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