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Diffusion Tensor Imaging Reveals First Evidence of Brain Rewiring in Children

By MedImaging International staff writers
Posted on 14 Jan 2010
A new imaging study demonstrated reading remediation improves children's reading skills and positively alters brain tissue.

Carnegie Mellon University (CMU; Pittsburgh, PA, USA) scientists Dr. Timothy Keller and Dr. Marcel Just have uncovered the first evidence that intensive instruction to improve reading skills in young children causes the brain to physically rewire itself, creating new white matter that improves communication within the brain.

As the researchers reported December 9, 2009, in the journal Neuron, brain imaging of children between the ages of 8 and 10 demonstrated that the quality of white matter--the brain tissue that carries signals between areas of grey matter, where information is processed--improved substantially after the children received 100 hours of remedial training. After the training, imaging indicated that the capability of the white matter to transmit signals efficiently had increased, and testing showed the children could read better.

"Showing that it's possible to rewire a brain's white matter has important implications for treating reading disabilities and other developmental disorders, including autism,” said Just, the professor of psychology and director of Carnegie Mellon's Center for Cognitive Brain Imaging (CCBI).

Dr. Thomas R. Insel, director of the National Institute of Mental Health, agreed. "We have known that behavioral training can enhance brain function. The exciting breakthrough here is detecting changes in brain connectivity with behavioral treatment. This finding with reading deficits suggests an exciting new approach to be tested in the treatment of mental disorders, which increasingly appear to be due to problems in specific brain circuits,” Dr. Insel said.

The CMU study was designed to discover what physically alters in the brains of poor readers who make the transition to good reading. They scanned the brains of 72 children before and after they went through a six-month remedial instruction program. Using diffusion tensor imaging (DTI), a new magnetic resonance imaging (MRI) brain imaging technique that tracks water movement in order to reveal the microscopic structure of white matter, Drs. Keller and Just found a brain change involving the white matter cabling that wires different parts of the brain together.

"Water molecules that are inside nerve fibers tend to move or diffuse parallel to the nerve fibers,” explained Dr. Keller, a CCBI research scientist and author of the first developmental study of compromised white matter in autism. "To track the nerve fibers, the scanner senses areas in which many water molecules are moving along in the same direction and produces a road-map of the brain's wiring.”

Earlier DTI studies had shown that both children and adults with reading difficulty displayed areas of compromised white matter. This new study shows that 100 hours of intensive reading instruction improved children's reading skills and also increased the quality of the compromised white matter to normal levels. More precisely, the DTI imaging illustrated that the consistency of water diffusion had increased in this region, indicating an improvement in the integrity of the white matter tracts.

"The improved integrity essentially increases communication bandwidth between the two brain areas that the white matter connects, by a factor of 10,” Dr. Just said. "This opens a new era of being able to see the brain wiring change when an effective instructional treatment is applied. It lets us see educational interventions from a new perspective.”

Out of the 72 children, 47 were poor readers and 25 were reading at a normal level. The good readers and a group of 12 poor readers did not receive the remedial instruction, and their brain scans did not show any changes. "The lack of change in the control groups demonstrates that the change in the treated group cannot be attributed to naturally occurring maturation during the study,” Dr. Keller noted.

Drs. Keller and Just also discovered that the amount of change in diffusion among the treated group was directly related to the amount of increase in phonologic decoding ability. The children who showed the most white matter change also showed the most improvement in reading ability, confirming the link between the brain tissue alteration and reading progress.

Further analyses indicated that the change resulted from a decrease in the movement of water perpendicular to the main axes of the underlying white matter fibers, a finding consistent with increased myelin content in the region. Although the investigators caution that additional research will be necessary to uncover the precise mechanism for the change in white matter, some previous findings indicate a role for electrical activity along axons in promoting the formation of myelin around them, providing a reasonable physiologic basis for intensive practice and instruction increasing the efficiency of communication among brain regions.

"We're excited about these results,” Dr. Just said. "The indication that behavioral intervention can improve both cognitive performance and the microstructure of white matter tracts is a breakthrough for treating and understanding development problems.”

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87 (56.982040405273): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
88 (64.849853515625): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
89 (37.908554077148): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
90 (56.028366088867): SELECT show_live FROM jos_com_show_setting LIMIT 1
91 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (37.193298339844): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (38.14697265625): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (45.061111450195): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (32.186508178711): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (27.179718017578): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (27.179718017578): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (110.86463928223): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
105 (46.968460083008): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
106 (78.916549682617): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (66.995620727539): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (119.92454528809): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
109 (63.896179199219): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
110 (66.995620727539): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (592.23175048828): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (841.85600280762): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (682.83081054688): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (218.86825561523): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
115 (82.969665527344): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
116 (80.108642578125): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
117 (96.08268737793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
118 (47.922134399414): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
119 (38.862228393555): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
120 (69.141387939453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
121 (40.054321289062): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
122 (368.11828613281): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 23623.943328857): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (617.02728271484): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294727380 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294727380 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 7627.9640197754): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (90.837478637695): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (59.127807617188): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (31.948089599609): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (39.100646972656): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (28.848648071289): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (305.8910369873): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (34.809112548828): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (30.994415283203): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (27.179718017578): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (!!!!! 2990.0074005127): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (597.00012207031): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (361.91940307617): SELECT name FROM jos_deeppockets WHERE id=212
138 (42.915344238281): SELECT name FROM jos_deeppockets WHERE id=212
139 (728.84559631348): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (509.02366638184): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (145.91217041016): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
142 (51.021575927734): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
143 (!!!!! 10533.094406128): TRUNCATE TABLE jos_trademed_module
144 (114.91775512695): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (56.982040405273): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294727380 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (573.15826416016): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (59.127807617188): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (77.009201049805): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
149 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
150 (!!!!! 1191.1392211914): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (64.849853515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
152 (47.922134399414): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
153 (39.100646972656): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294727380 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294727380 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (41.007995605469): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
155 (34.809112548828): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
156 (36.001205444336): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (198.8410949707): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
158 (58.889389038086): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294727380 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294727380 AND published='1' LIMIT 1
159 (87.976455688477): select jos_twitters.link from jos_twitters where cat=10
160 (30.994415283203): select jos_facebook.link from jos_facebook where cat=10
161 (30.994415283203): select jos_google_plus.link from jos_google_plus where cat=10
162 (40.054321289062): select jos_linkedin.link from jos_linkedin where cat=10
163 (422.95455932617): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
164 (!!!!! 1147.985458374): insert into jos_banners_delta values (14615,'2025-06-28 19:09:14','216.73.216.249','view'),(14202,'2025-06-28 19:09:14','216.73.216.249','view'),(14203,'2025-06-28 19:09:14','216.73.216.249','view')