Magnetic stimulation is a useful tool for the nerve stimulation because of its non-invasive and painless characters. It is, however, difficult localize a stimulating point because the induced current is wide spread compared to electric stimulation. It is the disadvantage of the magnetic stimulation. In order to apply magnetic stimulation to a human body effectively, it is very important to inve...

We report the case of a 43-year-old man who underwent endovascular treatment for posterior inferior cerebellar aneurysm. Significant hemodynamic changes were observed as electric stimulation was applied during coil detachment for a PICA aneurysm. We postulate that changes in heart rate and blood pressure during coil detachment were due to the electric stimulation of the tonic vasomotor center l...

Topographical and three-dimensional models of the brainstem segment including the cochlear nuclei were constructed employing computer aided design software. The geometric information was then utilized to construct a finite element model to describe the electric potential distribution in the area for monopolar stimulation. The model demonstrates the effects of ground electrode position on the el...

In recent years, the variety of products available for treating and managing wounds has expanded considerably. In spite of the numerous options available, however, many wounds remain nonhealing. As interest in treating chronic wounds has grown, so has interest and research into novel treatment modalities such as bio-electric stimulation therapy. Electric stimulation has been around in healthcar...

Moxibustion strengthens immunity and it is an effective treatment modality, but, depending on the material quantity, shape, and composition, the thermal strength and intensity can be difficult to control, which may cause pain or epidermal burns. To overcome these limitations, a heat stimulating system which is able to control the thermal intensity was developed. The temperature distributions on...

Results are presented on the optimization of the electric field distribution obtained during Transcranial Magnetic Stimulation (TMS) for deep neuron stimulation by using the Continuum Design Sensitivity Analysis (CDSA) combined with a commercially available generalized finite element code (OPERA). In order to obtain a magnetic field that can penetrate deeply and safely to activate the brain’s c...

Slowly varying electromagnetic fields play a key role in various applications in bio-systems and medical engineering. Examples are the electric activity of neurons on neurochips used as biosensors, the stimulating electric fields of implanted electrodes used for deep brain stimulation in patients with Morbus Parkinson and the stimulation of the auditory nerves in deaf patients, respectively. In...

Ø Goal: Investigation of the underlying biophysical effects of transcranial magnetic stimulation (TMS). ØThe biophysics of transcranial magnetic stimulation (TMS) is not yet well understood. We characterize in detail the electric field induced in gray (GM) and white matter (WM), using a geometrically accurate model of an individual head combined with high-resolution diffusion weighted imaging (...

Mammalian hearts undergo substantial growth and differentiation after birth with major changes in cell geometry and dimensions, as well as in intracellular constitution. It was not clear, however, whether these factors actually affect the response of the whole hearts to electric stimulation. In this work we showed that the threshold electric field (ET) needed to stimulate isolated hearts of rat...

OBJECTIVE This work aims to elucidate by what physical mechanisms and where stimulation occurs in the brain during transcranial magnetic stimulation (TMS), taking into account cortical geometry and tissue heterogeneity. METHODS An idealized computer model of TMS was developed, comprising a stimulation coil, a cortical sulcus, and surrounding tissues. The distribution of the induced electric f...