Cerebral asymmetries: complementary and independent processes.

Most people are right-handed and left-cerebrally dominant for speech, leading historically to the general notion of left-hemispheric dominance, and more recently to genetic models proposing a single lateralizing gene. This hypothetical gene can account for higher incidence of right-handers in those...

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Autores principales:	Gjurgjica Badzakova-Trajkov, Isabelle S Häberling, Reece P Roberts, Michael C Corballis
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/50641fd26d6e43018047b846e0375184
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spelling	oai:doaj.org-article:50641fd26d6e43018047b846e03751842021-11-25T06:25:28ZCerebral asymmetries: complementary and independent processes.1932-620310.1371/journal.pone.0009682https://doaj.org/article/50641fd26d6e43018047b846e03751842010-03-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20300635/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Most people are right-handed and left-cerebrally dominant for speech, leading historically to the general notion of left-hemispheric dominance, and more recently to genetic models proposing a single lateralizing gene. This hypothetical gene can account for higher incidence of right-handers in those with left cerebral dominance for speech. It remains unclear how this dominance relates to the right-cerebral dominance for some nonverbal functions such as spatial or emotional processing. Here we use functional magnetic resonance imaging with a sample of 155 subjects to measure asymmetrical activation induced by speech production in the frontal lobes, by face processing in the temporal lobes, and by spatial processing in the parietal lobes. Left-frontal, right-temporal, and right-parietal dominance were all intercorrelated, suggesting that right-cerebral biases may be at least in part complementary to the left-hemispheric dominance for language. However, handedness and parietal asymmetry for spatial processing were uncorrelated, implying independent lateralizing processes, one producing a leftward bias most closely associated with handedness, and the other a rightward bias most closely associated with spatial attention.Gjurgjica Badzakova-TrajkovIsabelle S HäberlingReece P RobertsMichael C CorballisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 3, p e9682 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gjurgjica Badzakova-Trajkov Isabelle S Häberling Reece P Roberts Michael C Corballis Cerebral asymmetries: complementary and independent processes.
description	Most people are right-handed and left-cerebrally dominant for speech, leading historically to the general notion of left-hemispheric dominance, and more recently to genetic models proposing a single lateralizing gene. This hypothetical gene can account for higher incidence of right-handers in those with left cerebral dominance for speech. It remains unclear how this dominance relates to the right-cerebral dominance for some nonverbal functions such as spatial or emotional processing. Here we use functional magnetic resonance imaging with a sample of 155 subjects to measure asymmetrical activation induced by speech production in the frontal lobes, by face processing in the temporal lobes, and by spatial processing in the parietal lobes. Left-frontal, right-temporal, and right-parietal dominance were all intercorrelated, suggesting that right-cerebral biases may be at least in part complementary to the left-hemispheric dominance for language. However, handedness and parietal asymmetry for spatial processing were uncorrelated, implying independent lateralizing processes, one producing a leftward bias most closely associated with handedness, and the other a rightward bias most closely associated with spatial attention.
format	article
author	Gjurgjica Badzakova-Trajkov Isabelle S Häberling Reece P Roberts Michael C Corballis
author_facet	Gjurgjica Badzakova-Trajkov Isabelle S Häberling Reece P Roberts Michael C Corballis
author_sort	Gjurgjica Badzakova-Trajkov
title	Cerebral asymmetries: complementary and independent processes.
title_short	Cerebral asymmetries: complementary and independent processes.
title_full	Cerebral asymmetries: complementary and independent processes.
title_fullStr	Cerebral asymmetries: complementary and independent processes.
title_full_unstemmed	Cerebral asymmetries: complementary and independent processes.
title_sort	cerebral asymmetries: complementary and independent processes.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/50641fd26d6e43018047b846e0375184
work_keys_str_mv	AT gjurgjicabadzakovatrajkov cerebralasymmetriescomplementaryandindependentprocesses AT isabelleshaberling cerebralasymmetriescomplementaryandindependentprocesses AT reeceproberts cerebralasymmetriescomplementaryandindependentprocesses AT michaelccorballis cerebralasymmetriescomplementaryandindependentprocesses
_version_	1718413742595637248

Cerebral asymmetries: complementary and independent processes.

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