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Titolo:
THE RELATIONSHIP BETWEEN CORPUS-CALLOSUM SIZE AND FOREBRAIN VOLUME
Autore:
JANCKE L; STAIGER JF; SCHLAUG G; HUANG YX; STEINMETZ H;
Indirizzi:
UNIV DUSSELDORF,INST GEN PSYCHOL I D-4000 DUSSELDORF GERMANY UNIV DUSSELDORF,DEPT NEUROL D-4000 DUSSELDORF GERMANY
Titolo Testata:
Cerebral cortex
fascicolo: 1, volume: 7, anno: 1997,
pagine: 48 - 56
SICI:
1047-3211(1997)7:1<48:TRBCSA>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEXUAL DIMORPHISM; HUMAN-BRAIN; HEMISPHERIC-SPECIALIZATION; HAND PREFERENCE; GENDER; MORPHOMETRY; HANDEDNESS; ADULT; DOMINANCE; ISTHMUS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
57
Recensione:
Indirizzi per estratti:
Citazione:
L. Jancke et al., "THE RELATIONSHIP BETWEEN CORPUS-CALLOSUM SIZE AND FOREBRAIN VOLUME", Cerebral cortex, 7(1), 1997, pp. 48-56

Abstract

Using high-resolution in vivo magnetic resonance morphometry we measured forebrain volume (FBV), midsagittal size of the corpus callosum (CC) and four CC subareas in 120 young and healthy adults (49 women, 71 men). We found moderate linear and quadratic correlations, indicating that the CC and all CC subareas increase with FBV both in men and women (multiple r(2) ranging from 0.10 to 0.28). Allometric equations revealed that these increases were less than proportional to FBV (r(2) ranging from 0.02 to 0.30). Absolute CC measurements, as well as CC subareas relative to total CC or FBV (the latter measures termed the CC ratios), were further analyzed with regard to possible effects of handedness. gender, or handedness by gender interaction. Contrary to previousreports, left-handers did not show larger CC measurements compared toright-handers. The only apparent influence of gender was on the CC ratios, which were larger in women. However, smaller brains had larger CG ratios which were mainly independent of gender, a result of the lessthan proportional increase of callosal size with FBV. We suggest thatthe previously described gender differences in CC anatomy may be better explained by an underlying effect of brain size, with larger brainshaving relatively smaller callosa. This lends empirical support to the hypothesis that brain size may be an important factor influencing interhemispheric connectivity and lateralization.

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Documento generato il 07/04/20 alle ore 22:46:17