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Related Concept Videos

Mesh Analysis01:20

Mesh Analysis

1.5K
Mesh analysis is a valuable method for simplifying circuit analysis using mesh currents as key circuit variables. Unlike nodal analysis, which focuses on determining unknown voltages, mesh analysis applies Kirchhoff's voltage law (KVL) to find unknown currents within a circuit. This method is particularly convenient in reducing the number of simultaneous equations that need to be solved.
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
1.5K
Mesh Analysis with Current Sources01:10

Mesh Analysis with Current Sources

2.0K
Mesh analysis becomes simpler when analyzing circuits with current sources, whether independent or dependent. The presence of current sources reduces the number of equations required for analysis. Two cases illustrate this:
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law...
2.0K
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

700
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
700
Brain Waves01:23

Brain Waves

4.1K
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
4.1K
Organization of the Brain01:30

Organization of the Brain

2.6K
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
2.6K
Brain Imaging01:14

Brain Imaging

727
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Related Experiment Video

Updated: Jan 28, 2026

Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note
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Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note

Published on: June 13, 2016

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Brain Mesh: Technical Note.

Oleg Titov1, Sergey Maryashev2, Andrey Bykanov2

  • 1Sechenov University, Moscow, Russia.

World Neurosurgery
|February 25, 2019
PubMed
Summary

A novel mesh device enables precise electrostimulation cortical mapping, improving neurosurgical accuracy and safety by avoiding standard method

Area of Science:

  • Neurosurgery
  • Neuroscience
  • Medical Devices

Background:

  • Standard electrostimulation cortical mapping uses electrodes and paper tags, leading to mapping deficiencies and potential epileptic seizures.
  • Current methods suffer from random electrode movement and tag displacement, compromising accuracy and safety.
  • A new device offers precise cortical mapping, overcoming limitations of conventional techniques.

Observation:

  • A flexible polymer mesh with a grid of pores is applied to the brain cortex.
  • Neurosurgeons stimulate the cortex sequentially through the mesh pores.
  • Pores over lesions are excised for tumor removal while the mesh remains in place.

Findings:

  • The new device facilitates accurate cortical mapping during glioma resection near the motor cortex.
Keywords:
BrainBrain meshCortexElectrostimulation mappingFunctional brain mappingSurgical technique

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Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note
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  • Tumor resection was performed without complications, demonstrating the technique's safety.
  • The mesh significantly streamlined the mapping process in a clinical neurosurgical setting.

    • Implications:

    • The proposed invention offers a precise and efficient method for electrostimulation cortical mapping in neurosurgery.
    • This technique enhances surgical precision, potentially reducing risks associated with brain tumor removal.
    • The device represents a significant advancement in intraoperative brain mapping tools.