Della Puppa A., De Pellegrin S., Salillas E., Grego A., Lazzarini A., Vallesi A., Saladini M., Semenza C. (2014). Functional mapping of left parietal areas involved in simple addition and multiplication. A single-case study of qualitative analysis of errors. Journal of Neuropsychology.
All electrostimulation studies on arithmetic have so far solely reported general errors. Nonetheless, a classification of the errors during stimulation can inform us about underlying arithmetic processes. The present electrostimulation study was performed in a case of left parietal glioma. The patient’s erroneous responses suggested that calculation was mainly applied for addition and a combination of retrieval and calculation was mainly applied for multiplication. The findings of the present single-case study encourage follow up with further data collection with the same paradigm.