ArticleFrontiers in neuroengineering2013
Frequency and time-frequency analysis of intraoperative ECoG during awake brain stimulation.
Article in Frontiers in neuroengineering, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Feasibility of perampanel monotherapy for seizure management during awake craniotomy for glioma.Journal of neuro-oncology · 2026Article
- Intraoperative Techniques for Language Mapping in Brain Surgery: A Comparison Between Direct Electrical Stimulation (DES) and Electrocorticography (ECoG).Brain and behavior · 2025Review
- Mapping of the central sulcus using non-invasive ultra-high-density brain recordings.Scientific reports · 2024Article
- A quantitative method for evaluating cortical responses to electrical stimulation.Journal of neuroscience methods · 2019Article
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Authors and funding
10 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Electrocortical stimulation remains the standard for functional brain mapping of eloquent areas to prevent postoperative functional deficits. The aim of this study was to investigate whether the short-train technique (monopolar stimulation) and Penfield's technique (bipolar stimulation) would induce different effects on brain oscillatory activity in awake patients, as quantified by electrocorticography (ECoG). The study population was seven patients undergoing brain tumor surgery. Intraoperative bipolar and monopolar electrical stimulation for cortical mapping was performed during awake surgery. ECoG was recorded using 1 × 8 electrode strip. Spectral estimation was calculated using a parametric approach based on an autoregressive model. Wavelet-based time-frequency analysis was then applied to evaluate the temporal evolution of brain oscillatory activity. Both monopolar and bipolar stimulation produced an increment in delta and a decrease in beta powers for the motor and the sensory channels. These phenomena lasted about 4 s. Comparison between monopolar and bipolar stimulation showed no significant difference in brain activity. Given the importance of quantitative signal analysis for evaluating response accuracy, ECoG recording during electrical stimulation is necessary to characterize the dynamic processes underlying changes in cortical responses in vivo. This study is a preliminary approach to the quantitative analysis of post-stimulation ECoG signals.
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