Related Experiment Video
Updated: Jan 29, 2026
06:01
Transcranial Direct Current Stimulation for Online Gamers
Published on: November 9, 2019
8.5K
Modeling of Brain Tissue Heating Caused by Direct Cortical Stimulation for Assessing the Risk of Thermal Damage
Summary
This study used numerical simulations to assess cellular damage risk from novel electrical stimulation mapping (ESM) in neurosurgery. Results confirm the high-intensity ESM paradigm is thermally safe for brain tissue.
Area of Science:
- Biomedical Engineering
- Neurosurgery
- Computational Neuroscience
Background:
- Electrical Stimulation Mapping (ESM) is crucial in neurosurgery for precise neural targeting.
- Novel ESM paradigms utilize short, high-intensity, high-frequency pulses, necessitating safety assessments.
- Understanding thermal effects is critical to prevent cellular damage during neurosurgical electrical stimulation.
Purpose of the Study:
- To numerically assess the risk of cellular damage from a novel electrical stimulation mapping (ESM) paradigm.
- To evaluate the thermal impact of short, high-intensity, high-frequency stimulation pulses used in neurosurgery.
- To validate simulation models against experimental measurements for accurate safety assessment.
Main Methods:
- Developed a complex numerical model for coupled electro-thermal transient simulations.
- Optimized the model using intraoperative ESM electrode resistance measurements.
- Validated temperature distribution predictions against thermal imaging data.
- Assessed heat-induced cellular damage risk using the Arrhenius equation integral.
Main Results:
- Numerical simulations indicated that the novel ESM paradigm results in a thermally non-destructive temperature increase.
- Computed temperature distributions were consistent with experimental thermographic measurements.
- Simulation findings align with previous histopathological examinations of stimulated brain tissue.
- The study confirmed the thermal safety of the novel ESM paradigm.
Conclusions:
- The novel electrical stimulation mapping (ESM) paradigm is thermally safe for neurosurgical applications.
- Numerical simulations provide a reliable method for assessing thermal risks in novel neurosurgical techniques.
- Validated computational models enhance the safety and efficacy of advanced neurosurgical tools.
More Related Videos
Related Concept Videos
02:46Quantifying Heat
62.0K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the...
62.0K
02:44Heating and Cooling Curves
27.6K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
27.6K
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
304
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
304
01:16Specific Heat
67.4K
The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
67.4K
01:12Relative Risk
2.1K
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
2.1K
01:12Heat Flow and Specific Heat
6.8K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
6.8K