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The neural origin of the priming distance effect : distance-dependent recovery of parietal activation using symbolic magnitudes

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Notebaert, Karolien [KUL] Pesenti, Mauro [UCL] Reynvoet, Bert [KUL]

Numerical magnitudes are known to be processed in areas around the intraparietal sulci of the brain. We used an fMRI-adaptation paradigm to investigate how they are actually coded at the neural level. In a number identification task, we manipulated the numerical distance between prime and target numbers (same, close, and far pairs) and their symbolic notation (Arabic and verbal numerals). We show that bilateral parietal activations present a distance-dependent recovery of activation positively correlated with the distance between primes and targets: the larger the prime-target distance, the higher the recovery of activation. Importantly, this effect is only present for trials where an Arabic numeral precedes a verbal numeral and not the reverse. Together, these findings reveal the neural origin of the behavioral priming distance effect and demonstrate that the relative importance of the semantic and nonsemantic pathways in a dual-route model of number processing is modulated by symbolic notation. © 2009 Wiley-Liss, Inc.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 2010
Language Anglais
Journal information "Human Brain Mapping" - Vol. 31, no. 5, p. 669-677 (2010)
Peer reviewed yes
Publisher JohnWiley & Sons, Inc. ((United States) Hoboken)
issn 1065-9471
e-issn 1097-0193
Publication status Publié
Affiliations UCL - SSH/IPSY - Psychological Sciences Research Institute
UCL - SSS/IONS - Institute of NeuroScience
UCL - SSS/IONS - Institute of NeuroScience
UCL - SSS/IONS/COSY - Systems & cognitive Neuroscience
Keywords Adaptation ; Controlled study ; Functional magnetic resonance imaging ; Human ; Human experiment ; Male ; Mathematical computing ; Nerve cell ; Neuroimaging ; Normal human ; Priority journal ; Event-related fMRI ; Semantics ; Subiculum ; Adaptation, Psychological ; Adult ; Analysis of Variance ; Brain ; Brain Mapping ; Functional Laterality ; Humans ; Magnetic Resonance Imaging ; Intraparietal sulcus ; Male ; Mathematical Concepts ; Mental Processes ; Parietal Lobe ; Photic Stimulation ; Reaction Time ; Reading ; Visual Perception ; Young Adult ; Number processing ; Parietal cortex ; Priming distance effect ; Adult ; Article ; Behavioral science
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Bibliographic reference Notebaert, Karolien ; Pesenti, Mauro ; Reynvoet, Bert. The neural origin of the priming distance effect : distance-dependent recovery of parietal activation using symbolic magnitudes. In: Human Brain Mapping, Vol. 31, no. 5, p. 669-677 (2010)
Permanent URL http://hdl.handle.net/2078/119663