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Titolo:
Bilateral field interactions and hemispheric asymmetry in number comparison
Autore:
Ratinckx, E; Brysbaert, M; Reynvoet, B;
Indirizzi:
State Univ Ghent, Dept Expt Psychol, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 xpt Psychol, B-9000 Ghent, Belgium
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 4, volume: 39, anno: 2001,
pagine: 335 - 345
SICI:
0028-3932(2001)39:4<335:BFIAHA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL HEMISPHERES; COGNITIVE MECHANISMS; REACTION-TIME; SINGLE-DIGIT; SPLIT-BRAIN; STIMULI; SPECIALIZATION; LATERALITY; LANGUAGE; TASK;
Keywords:
laterality; interhemispheric interactions; corpus callosum; number magnitude;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
86
Recensione:
Indirizzi per estratti:
Indirizzo: Ratinckx, E State Univ Ghent, Dept Expt Psychol, Henri Dunantlaan 2, B-9000 Ghent, Belgium State Univ Ghent Henri Dunantlaan 2 Ghent Belgium B-9000 gium
Citazione:
E. Ratinckx et al., "Bilateral field interactions and hemispheric asymmetry in number comparison", NEUROPSYCHO, 39(4), 2001, pp. 335-345

Abstract

We investigated bilateral field interactions and hemispheric asymmetry in number comparison. A numerical comparison task with three different stimulus notations (Arabic numerals, word numerals and bar graphs) was used. Tn all conditions, a target was displayed in one visual field, simultaneously with a distracter of the same format in the other visual field. Participants had to indicate manually whether the magnitude of the target was small or large, ignoring the distracter stimulus. Only in the condition with Arabic numerals did we obtain some evidence for a LVF advantage, which argues against a strong laterality of number magnitude representations. Significant interactions between target and distracter values were observed, indicating rich interhemispheric interactions. The interactions were mainly situated at the response stage, but the presence of a bilateral identity effect also points to interactions at the input level. (C) 2001 Published by Elsevier Science Ltd.

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Documento generato il 18/01/20 alle ore 21:57:25