ArticleClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2015
Mapping mental calculation systems with electrocorticography.
Article in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 13 citations in OpenAlex.
- Temporal order of activations and interactions during arithmetic calculations measured by intracranial electrophysiological recordings in the human brain.Scientific reports · 2026Article
- Characterization of High-Gamma Activity in Electrocorticographic Signals.Frontiers in neuroscience · 2023Article
- Neural Processing Mechanism of Mental Calculation Based on Cerebral Oscillatory Changes: A Comparison Between Abacus Experts and Novices.Frontiers in human neuroscience · 2020Article
- Gray matter volume and dual-task gait performance in mild cognitive impairment.Brain imaging and behavior · 2017Article
- Changes of Functional and Directed Resting-State Connectivity Are Associated with Neuronal Oscillations, ApoE Genotype and Amyloid Deposition in Mild Cognitive Impairment.Frontiers in aging neuroscience · 2017Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
objectiveWe investigated intracranially-recorded gamma activity during calculation tasks to better understand the cortical dynamics of calculation.
methodsWe studied 11 patients with focal epilepsy (age range: 9-28years) who underwent measurement of calculation- and naming-related gamma-augmentation during extraoperative electrocorticography (ECoG). The patients were instructed to overtly verbalize a one-word answer in response to auditorily-delivered calculation and naming questions. The assigned calculation tasks were addition and subtraction involving integers between 1 and 17.
resultsOut of the 1001 analyzed cortical electrode sites, 63 showed gamma-augmentation at 50-120Hz elicited by both tasks, 88 specifically during naming, and 7 specifically during calculation. Common gamma-augmentation mainly took place in the Rolandic regions. Calculation-specific gamma-augmentation, involving the period between the question-offset and response-onset, was noted in the middle-temporal, inferior-parietal, inferior post-central, middle-frontal, and premotor regions of the left hemisphere. Calculation-specific gamma-augmentation in the middle-temporal, inferior-parietal, and inferior post-central regions peaked around the question offset, while that in the frontal lobe peaked after the question offset and before the response onset. This study failed to detect a significant difference in calculation-specific gamma amplitude between easy trials and difficult ones requiring multi-digit operations.
conclusionsAuditorily-delivered stimuli can elicit calculation-specific gamma-augmentation in multiple regions of the left hemisphere including the parietal region. However, the additive diagnostic value of measurement of gamma-augmentation related to a simple calculation task appears modest. SIGNIFICANCE: Further studies are warranted to determine the functional significance of calculation-specific gamma-augmentation in each site, and to establish the optimal protocol for mapping mental calculation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.