tES + fMRI Integration: Simultaneous Neuromodulation and Neuroimaging

The integration of Transcranial Electrical Stimulation (tES) and High-Definition tES (HD-tES) with Functional Magnetic Resonance Imaging (fMRI) allows researchers to observe real-time hemodynamic changes across entire brain networks during active neuromodulation. Soterix Medical provides specialized integration kits engineered to solve the complex physics of delivering electrical currents inside a high-magnetic-field environment. Uncompromised Data Integrity and Safety:. Performing electrical stimulation inside an MRI scanner traditionally introduces severe artifacts and safety risks. The Soterix MR-compatible system overcomes these hurdles:. 7T Compatibility: The system is rigorously tested and rated for use in MRI machines up to ultra-high field 7T scanners, supporting tDCS, tACS, and HD-tES protocols., Thermal Safety: Extensive testing confirms that induced currents do not alter the programmed dose and that electrode-related heating remains negligible (below 0.5°C)., Zero RF Interference: The cables and electrodes are designed to minimize RF noise and magnetic susceptibility artifacts. The presence of the HD electrodes does not distort EPI (Echo Planar Imaging) sequences or reduce the scanner's Signal-to-Noise Ratio (SNR). Advanced Modeling and Multimodality:. Beyond simultaneous recording, the integration provides powerful avenues for precision targeting and complex study designs. Individualized Validation: Structural MRI data collected during the session can be directly imported into Soterix neurotargeting software. This allows researchers to generate highly accurate, individualized current flow models based on the exact electrode positions used in the scanner., Triple-Modality Setups: The tES + fMRI kits are fully compatible with MR-compatible EEG systems. This enables groundbreaking tES + fMRI + EEG research setups, capturing electrical, hemodynamic, and perturbational data simultaneously.