Functional lateralization of arithmetic processing in the intraparietal sulcus is associated with handedness.
Sci Rep
; 10(1): 1775, 2020 02 04.
Article
en En
| MEDLINE
| ID: mdl-32020021
Functional lateralization is established for various cognitive functions, but was hardly ever investigated for arithmetic processing. Most neurocognitive models assume a central role of the bilateral intraparietal sulcus (IPS) in arithmetic processing and there is some evidence for more pronounced left-hemispheric activation for symbolic arithmetic. However, evidence was mainly obtained by studies in right-handers. Therefore, we conducted a functional near-infrared spectroscopy (fNIRS) study, in which IPS activation of left-handed adults was compared to right-handed adults in a symbolic approximate calculation task. The results showed that left-handers had a stronger functional right-lateralization in the IPS than right-handers. This finding has important consequences, as the bilateral IPS activation pattern for arithmetic processing seems to be shaped by functional lateralization and thus differs between left- and right-handers. We propose three possible accounts for the observed functional lateralization of arithmetic processing.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Lóbulo Parietal
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Solución de Problemas
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Encéfalo
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Lateralidad Funcional
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Sci Rep
Año:
2020
Tipo del documento:
Article