A functional magnetic resonance imaging study of language processing and its cognitive correlates in prematurely born children.
OBJECTIVE
Abnormalities in brain structure, cognition, and behavior have been described in children born prematurely. However, no direct in vivo evidence has yet demonstrated abnormal neural processing in these children. Our aim was to compare brain activity associated with phonologic and semantic processing of language between term and preterm children using functional magnetic resonance imaging (fMRI).


METHODS
fMRI scans were acquired during a passive language comprehension task in 26 preterm children at 8 years of age and in 13 term community control children who were comparable in age, sex, maternal education, and minority status. IQ was assessed using a standard measure of intelligence.


RESULTS
The pattern of brain activity identified in a semantic processing task in the preterm children closely resembled the pattern of brain activity identified in a phonologic processing task in term controls. The greater this resemblance in the preterm children, the lower their verbal comprehension IQ scores and the poorer their language comprehension during the scanning task.


CONCLUSIONS
Preterm children with the poorest language comprehension seemed not to fully engage normal semantic processing pathways in a language comprehension task. These children instead engaged pathways that normal term children used to process meaningless phonologic sounds. Aberrant processing of semantic content in these preterm children may account in part for their lower verbal IQ scores.
Peterson
Bradley S
BS
Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, New York 10032, USA. petersob@child.cpmc.columbia.edu
Vohr
Betty
B
Kane
Michael J
MJ
Whalen
Douglas H
DH
Schneider
Karen C
KC
Katz
Karol H
KH
Zhang
Heping
H
Duncan
Charles C
CC
Makuch
Robert
R
Gore
John C
JC
Ment
Laura R
LR
D001577:Benzophenones; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D002648:Child; D003071:Cognition / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D007361:Intelligence Tests; D007804:Language Development; D016018:Least-Squares Analysis; D008279:Magnetic Resonance Imaging; D008297:Male; D010700:Phonetics; D012016:Reference Values; D012660:Semantics
D001577:Benzophenones; C036630:G 1026