Phonological but not arithmetic processing engages left posterior inferior frontal gyrus
2014 (English)Manuscript (preprint) (Other academic)
Arithmetic and language processing involve similar neural networks, but the relative engagement has not previously been investigated in a single study. In the present study we compared activation for phonology, multiplication and subtraction tasks, keeping the stimulus material constant, within a predefined language-calculation network including left inferior frontal gyrus (IFG) and angular gyrus (AG) as well as superior parietal lobule (SPL) and the horizontal portion of the intraparietal sulcus (hIP) bilaterally. Results revealed an overall left laterialized activation pattern within the perisylvian language network for all tasks but with a regional division of responsibility between multiplication and phonology, where phonology primarily recruited posterior IFG and anterior AG, while multiplication primarily recruited anterior IFG and posterior AG. Multiplication and subtraction engaged similar neuronal systems, suggesting that the simple subtraction problems used in the present study can be stored as unified representations in long term memory and accessed through arithmetic fact retrieval.
Place, publisher, year, edition, pages
Phonology, arithmetic, brain imaging, perisylvian language network
IdentifiersURN: urn:nbn:se:liu:diva-111559OAI: oai:DiVA.org:liu-111559DiVA: diva2:758036