Individualized Transcranial Temporal Interference Stimulation (TIS): Research Advancements and Clinical Translation Pathways
Related Experiment Video
Updated: Nov 4, 2026
Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
Published on: February 23, 2020
Yetong Shi1, Shangang Feng2, Yuzhang Wu1
1Department of Neurosurgery, Huanhu Hospital Affiliated to Tianjin Medical University, Tianjin, China; Department of Neurosurgery, Huanhu Hospital, Tianjin University, Tianjin, China; Department of Neurosurgery, Brain Medical Center,Tianjin University, Tianjin, China.
Background:
Transcranial temporal interference stimulation (TIS) is a promising tool for non-invasive deep brain modulation, yet inter-individual anatomical differences cause substantial electric field (E-field) variability under identical parameters, hindering clinical translation.
Objective:
We review recent progress (2017-2026) in individualized TIS, focusing on why inter-individual variability occurs and how to address it for clinical applications.
Methods:
We searched PubMed/MEDLINE, Web of Science, Scopus, IEEE Xplore, preprint repositories (bioRxiv, medRxiv, arXiv), and clinical trial registries from June 2017 through August 2026, synthesizing studies across quantitative E-field variability, biophysical mediation mechanisms, computational optimization frameworks, and human trials.
Results:
Even with individualized optimization, the focal spot can shift by up to 1.2cm between subjects. Target modulation depth varies with age and sex, largely due to variations in skull thickness and cerebrospinal fluid volume. For E-field optimization, individualized finite element method (FEM) modeling remains the most accurate approach, whereas faster population-based optimization (17% error margin) is viable only for superficial brain areas. In human translational studies, a clear distinction must be maintained across levels of evidence: while individualized montages targeting the striatum and subthalamic nucleus demonstrate physiological target engagement, behavioral modulation in healthy cohorts, and preliminary acute symptom relief in pilot patient trials, definitive clinical efficacy in large-scale randomized trials (e.g., ongoing nucleus accumbens protocols) and effective active sham protocols remain ongoing challenges.
Conclusion:
Individualized planning is essential for deep TIS. Future studies should focus on multi-center trials and standardized in vivo closed-loop validation using functional neuroimaging and electrophysiology.