ArticlePLoS computational biology2019
Correlation Structure in Micro-ECoG Recordings is Described by Spatially Coherent Components.
Article in PLoS computational biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed.
- Trial
- Signal properties and stability of a chronically implanted endovascular brain computer interface.medRxiv : the preprint server for health sciences · 2025Article
- Intracranial Voltage Profiles from Untangled Human Deep Sources Reveal Multisource Composition and Source Allocation Bias.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Comparison of Subdural and Intracortical Recordings of Somatosensory Evoked Responses.Sensors (Basel, Switzerland) · 2024Article
- Effect of Electrode Distance and Size on Electrocorticographic Recordings in Human Sensorimotor Cortex.Neuroinformatics · 2024Article
- High-density transparent graphene arrays for predicting cellular calcium activity at depth from surface potential recordings.Nature nanotechnology · 2024Article
- Site-dependent shaping of field potential waveforms.Cerebral cortex (New York, N.Y. : 1991) · 2023Article
- Review
- Uncorrelated bilateral cortical input becomes timed across hippocampal subfields for long waves whereas gamma waves are largely ipsilateral.Frontiers in cellular neuroscience · 2023Article
- Theoretical considerations and supporting evidence for the primary role of source geometry on field potential amplitude and spatial extent.Frontiers in cellular neuroscience · 2023Review
- On-scalp magnetocorticography with optically pumped magnetometers: Simulated performance in resolving simultaneous sources.Neuroimage. Reports · 2022Article
- Transparent, Low-Impedance Inkjet-Printed PEDOT:PSS Microelectrodes for Multi-modal Neuroscience.Physica status solidi. A, Applications and materials science : PSS · 2022Article
- Machine learning based brain signal decoding for intelligent adaptive deep brain stimulation.Experimental neurology · 2022Review
- The size of via holes influence the amplitude and selectivity of neural signals in Micro-ECoG arrays.BMC biomedical engineering · 2022Article
- Ultra-Sharp Nanowire Arrays Natively Permeate, Record, and Stimulate Intracellular Activity in Neuronal and Cardiac Networks.Advanced functional materials · 2022Article
- Decoding of cortex-wide brain activity from local recordings of neural potentials.Journal of neural engineering · 2021Article
- Cross Laminar Traveling Components of Field Potentials due to Volume Conduction of Non-Traveling Neuronal Activity in Macaque Sensory Cortices.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Thin-film microfabrication and intraoperative testing ofJournal of neural engineering · 2021Article
- Sufficient sampling for kriging prediction of cortical potential in rat, monkey, and human µECoG.Journal of neural engineering · 2021Article
- Oscillation-Based Connectivity Architecture Is Dominated by an Intrinsic Spatial Organization, Not Cognitive State or Frequency.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
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Authors and funding
14 authors.
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Abstract
Electrocorticography (ECoG) is becoming more prevalent due to improvements in fabrication and recording technology as well as its ease of implantation compared to intracortical electrophysiology, larger cortical coverage, and potential advantages for use in long term chronic implantation. Given the flexibility in the design of ECoG grids, which is only increasing, it remains an open question what geometry of the electrodes is optimal for an application. Conductive polymer, PEDOT:PSS, coated microelectrodes have an advantage that they can be made very small without losing low impedance. This makes them suitable for evaluating the required granularity of ECoG recording in humans and experimental animals. We used two-dimensional (2D) micro-ECoG grids to record intra-operatively in humans and during acute implantations in mouse with separation distance between neighboring electrodes (i.e., pitch) of 0.4 mm and 0.2/0.25 mm respectively. To assess the spatial properties of the signals, we used the average correlation between electrodes as a function of the pitch. In agreement with prior studies, we find a strong frequency dependence in the spatial scale of correlation. By applying independent component analysis (ICA), we find that the spatial pattern of correlation is largely due to contributions from multiple spatially extended, time-locked sources present at any given time. Our analysis indicates the presence of spatially structured activity down to the sub-millimeter spatial scale in ECoG despite the effects of volume conduction, justifying the use of dense micro-ECoG grids.
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