Researchers from Harvard Medical School have found increased thickness of two areas of the brain cortex in people with migraine when compared to healthy controls. Both areas of the brain are known to be involved in how the brain processes signals to do with movement.
Using two forms of magnetic resonance imaging the researchers studied 24 patients with migraine (12 who had migraine with aura and 12 without aura) and 15 age-matched healthy controls.
There were no differences in cortical thickness in motion-related areas between the participants with migraine who had aura (neurological disturbances such as illusions of flashing lights, zig-zag lines, or blind spots) and those who did not, but the area of cortical thickening in one area corresponded to the source of cortical spreading depression previously identified in a person who had migraine with aura. As well as showing that there are some structural differences in the brains of people with migraine, the position of the changes could help to explain why some people with migraine have problems with visual processing even in between attacks.
In a Perspective article commenting on the work Peter Goadsby from the Institute of Neurology, London said "the new data show that after four millennia, migraine still has many more secrets to be uncovered."
All works published in PLoS Medicine are open access. Everything is immediately available without cost to anyone, anywhere--to read, download, redistribute, include in databases, and otherwise use--subject only to the condition that the original authorship is properly attributed. Copyright is retained by the authors. The Public Library of Science uses the Creative Commons Attribution License.
EMBARGO: MONDAY, 16 October, 5 P.M. PDT
PLEASE MENTION THE OPEN-ACCESS JOURNAL PLoS MEDICINE (www.plosmedicine.org) AS THE SOURCE FOR THESE ARTICLES AND PROVIDE A LINK TO THE FREELY-AVAILABLE TEXT. THANK YOU.
Citation: Granziera C, DaSilva AFM, Snyder J, Tuch DS, Hadjikhani N (2006) Anatomical alterations of the visual motion processing network in migraine with and without aura. PLoS Med 3(10): e402.
PLEASE ADD THE LINK TO THE PUBLISHED ARTICLE IN ONLINE VERSIONS OF YOUR REPORT: http://dx.doi.org/10.1371/journal.pmed.0030402
PRESS-ONLY PREVIEW OF THE ARTICLE: http://www.plos.org/press/plme-03-10-hadjikhani.pdf
Harvard Medical School
HMS/MGH/HST Martinos Center for Biomedical Imaging
Building 36, First avenue. #417
Charlestown, MA 02129 United States of America
+1 617 724 5625
+1 530 309 4973 (fax)
Related PLoS Medicine Perspectives article:
Citation: Goadsby PJ (2006) The migrainous brain: What you see is not all you get? PLoS Med 3(10): e404.
PLEASE ADD THE LINK TO THE PUBLISHED ARTICLE IN ONLINE
VERSIONS OF YOUR REPORT: http://dx.doi.org/10.1371/journal.pmed.0030404
PRESS-ONLY PREVIEW OF THE ARTICLE: http://www.plos.org/press/plme-03-10-goadsby.pdf
University College London
Institute of Neurology
London, United Kingdom
About PLoS Medicine
PLoS Medicine is an open access, freely available international medical journal. It publishes original research that enhances our understanding of human health and disease, together with commentary and analysis of important global health issues. For more information, visit http://www.plosmedicine.org
About the Public Library of Science
The Public Library of Science (PLoS) is a non-profit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource. For more information, visit http://www.plos.org
Last reviewed: By John M. Grohol, Psy.D. on 21 Feb 2009
Published on PsychCentral.com. All rights reserved.