Corpus callosum damage and interhemispheric transfer of information following closed head injury in children

被引:55
作者
Benavidez, DA
Fletcher, JM
Hannay, HJ
Bland, ST
Caudle, SE
Mendelsohn, DB
Yeakley, J
Brunder, DG
Harward, H
Song, J
Perachio, NA
Bruce, D
Scheibel, RS
Lilly, MA
Verger-Maestre, K
Levin, HS
机构
[1] Baylor Coll Med, PM&R Res Off, Dept Phys Med & Rehabil, Houston, TX 77030 USA
[2] Univ Texas, Sch Med, Dept Pediat, Houston, TX USA
[3] Univ Houston, Dept Psychol, Houston, TX 77004 USA
[4] Univ Texas, SW Med Sch, Dept Radiol, Dallas, TX 75230 USA
[5] Univ Texas, Med Branch, Dept Comp Sci, Galveston, TX 77550 USA
[6] Univ Texas, Callier Ctr Commun Disorders, Dallas, TX 75235 USA
[7] Univ Texas, SW Med Sch, Dept Neurosurg, Dallas, TX 75230 USA
关键词
closed head injury; children; corpus callosum; dichotic listening;
D O I
10.1016/S0010-9452(08)70803-7
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
We evaluated the relationship of corpus callosum atrophy and/or lesions on magnetic resonance imaging (MRI) to functional hemispheric disconnection following closed head injury (CHI) in 51 pediatric patients, including mild CHI, moderate to severe CHI with extracallosal lesions, and moderate to severe CHI with callosal atrophy and/or lesions. Interhemispheric transfer of information was assessed using auditory, motor, tactile, and visual tests in patients and in 16 uninjured children. Total and regional callosal areas were measured from the midsagittal MRI slice by morphometry. The corpus callosum lesion group demonstrated a greater right ear advantage on verbal dichotic Listening than all other groups. Areas of the posterior corpus callosum were negatively correlated with laterality indices of verbal dichotic listening performance and tachistoscopic identification of verbal material. The relationship of corpus callosum atrophy and/or lesions to asymmetry in dichotic listening is consistent with previous investigation of posttraumatic hemispheric disconnection effects in adults.
引用
收藏
页码:315 / 336
页数:22
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