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Titolo:
Cortical map asymmetries in the context of transcallosal excitatory influences
Autore:
Reggia, JA; Goodall, S; Levitan, S;
Indirizzi:
Univ Maryland, Inst Adv Comp Studies, Dept Neurol, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 pt Neurol, College Pk, MD 20742 USA Univ Maryland, Inst Adv Comp Studies, Dept Comp Sci, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 Comp Sci, College Pk, MD 20742 USA SPSS Inc, Chicago, IL 60606 USA SPSS Inc Chicago IL USA 60606SPSS Inc, Chicago, IL 60606 USA
Titolo Testata:
NEUROREPORT
fascicolo: 8, volume: 12, anno: 2001,
pagine: 1609 - 1614
SICI:
0959-4965(20010613)12:8<1609:CMAITC>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL HEMISPHERES; CORTEX; INHIBITION; LESIONS; MODEL;
Keywords:
corpus callosum; cortical maps; diaschisis; hemispheric asymmetries;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Reggia, JA Univ Maryland, Inst Adv Comp Studies, Dept Neurol, AV Williams Bldg, College Pk, MD 20742 USA Univ Maryland AV Williams Bldg College Pk MDUSA 20742 0742 USA
Citazione:
J.A. Reggia et al., "Cortical map asymmetries in the context of transcallosal excitatory influences", NEUROREPORT, 12(8), 2001, pp. 1609-1614

Abstract

There is long-standing disagreement among experimentalists about whether transcallosal interhemispheric influences are primarily excitatory or inhibitory. Past computational models exploring this issue have encountered a similar dilemma: inhibitory callosal influences best explain hemispheric functional asymmetries, but excitatory callosal influences best explain transcallosal diaschisis. We recently hypothesized that this dilemma might be resolved by assuming excitatory callosal influences and a subcortical mechanism for cross-midline inhibition. Here we explore the feasibility of this hypothesis by examining a model of map formation in corresponding left and rightcortical regions. The results show for the first time that both map asymmetries and diaschisis-like changes can be produced in a single model, suggesting that subcortical inhibitory processes may contribute more to asymmetric cortical functionality than is generally recognized. NeuroReport 12:1609-1614 (C) 2001 Lippincott Williams & Wilkins.

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Documento generato il 25/01/20 alle ore 18:43:13