Int J Neural Syst - Neural correlates of mathematical problem solving.

Tópicos

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Resumo

This study explores electroencephalography (EEG) brain dynamics associated with mathematical problem solving. EEG and solution latencies (SLs) were recorded as 11 neurologically healthy volunteers worked on intellectually challenging math puzzles that involved combining four single-digit numbers through basic arithmetic operators (addition, subtraction, division, multiplication) to create an arithmetic expression equaling 24. Estimates of EEG spectral power were computed in three frequency bands - (4-7 Hz), a (8-13 Hz) and ? (14-30 Hz) - over a widely distributed montage of scalp electrode sites. The magnitude of power estimates was found to change in a linear fashion with SLs - that is, relative to a base of power spectrum, theta power increased with longer SLs, while alpha and beta power tended to decrease. Further, the topographic distribution of spectral fluctuations was characterized by more pronounced asymmetries along the left-right and anterior-posterior axes for solutions that involved a longer search phase. These findings reveal for the first time the topography and dynamics of EEG spectral activities important for sustained solution search during arithmetical problem solving.

Resumo Limpo

studi explor electroencephalographi eeg brain dynam associ mathemat problem solv eeg solut latenc sls record neurolog healthi volunt work intellectu challeng math puzzl involv combin four singledigit number basic arithmet oper addit subtract divis multipl creat arithmet express equal estim eeg spectral power comput three frequenc band hz hz hz wide distribut montag scalp electrod site magnitud power estim found chang linear fashion sls relat base power spectrum theta power increas longer sls alpha beta power tend decreas topograph distribut spectral fluctuat character pronounc asymmetri along leftright anteriorposterior axe solut involv longer search phase find reveal first time topographi dynam eeg spectral activ import sustain solut search arithmet problem solv

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