BioEM 2025

Session

Oral Session 5

OS5

25 Jun 2025, 09:30

La Nef (Couvent des Jacobins)

Conveners

Oral Session 5: Exploring Techniques and Applications in ELF Dosimetry I

• Myles Capstick
• Giulia Sacco

305. Assessment of Non-Invasive Brain Stimulation Safety in the Presence of Implanted Electrodes

Myles Capstick

25/06/2025, 09:30

The increasing number of in vivo investigations combining non- invasive brain stimulation (NIBS) techniques – such as transcranial electric (tES) stimulation – with invasive stimulation (e.g., DBS) or sensing electrodes (e.g., sEEG), requires a proper understanding of the mechanisms of interaction between applied fields and passive/active implants to determine safety. In view of allowing...

306. Electromagnetic compatibility: modelling of the induced voltage on a pacemaker bipolar lead

Lucien Hammen

25/06/2025, 09:45

The increasing prevalence of Active Implantable Medical Devices (AIMDs), such as pacemakers, raises concerns regarding their susceptibility to electromagnetic interference (EMI), particularly in occupational environments where exposure could be relatively high. While unipolar pacemaker leads are well-documented as being sensitive to magnetic field, the mechanisms of interaction between...

307. Magnetic resonance imaging of the brain: impact of heterogenous head model on the analytical design of high permittivity materials

Giuseppe Ruello

25/06/2025, 10:00

This study explores the design of high-permittivity materials (HPMs) for magnetic resonance imaging (MRI) at three distinct Larmor frequencies. The objective of the work was to assess the influence of heterogeneous head structures, commonly used in numerical simulations, on the design of HPMs when utilizing analytical tools. To achieve this, a brain MRI experiment was simulated, incorporating...

308. General Circuit Model for Electrode Contact Impedance for Transcranial and Other Electrical Stimulations

Cindy Karina

25/06/2025, 10:15

In non-invasive brain stimulation (NIBS), electric fields are used to stimulate or modulate neuronal activity. To achieve the desired degree of stimulation, a certain level of induced field is required. Contact impedance between the electrodes and skin/tissue layers results in a voltage drop, which reduces the amount of current applied for a given excitation voltage. To address this, the...