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Related Experiment Video

Updated: Jul 3, 2026

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Published on: June 29, 2018

Tremor entrainment by patterned low-frequency stimulation.

Utako B Barnikol¹, Oleksandr V Popovych, Christian Hauptmann

¹Institute of Neurosciences and Biophysics 3-Medicine, Research Center Jülich, Leo-Brand-Street, 52425 Jülich, Germany.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences

|July 18, 2008

Summary

This summary is machine-generated.

Patterned low-frequency stimulation (PLFS) effectively evokes tremor when standard methods fail, aiding deep brain stimulation target localization. This novel technique, validated computationally and clinically, ensures precise tremor suppression for patients like those with spinocerebellar ataxia type 2.

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Area of Science:

Neuroscience
Neurosurgery
Biomedical Engineering

Background:

High-frequency test stimulation is standard for deep brain stimulation (DBS) target localization.
This method fails when tremor subsides intraoperatively (e.g., under anesthesia).

Purpose of the Study:

To develop and validate a novel stimulation technique to reliably evoke tremor for functional target localization in DBS.
To overcome limitations of standard high-frequency stimulation in cases of intraoperative tremor disappearance.

Main Methods:

Developed and computationally investigated patterned low-frequency stimulation (PLFS) using brief high-frequency pulse trains.
Assessed PLFS's ability to evoke synchronized neuronal activity and phase-locking in a computational model.
Applied PLFS to a patient with spinocerebellar ataxia type 2 (SCA2) experiencing intraoperative tremor loss.

Main Results:

PLFS effectively evoked tremor, phase-locked to the stimulus, in both computational models and the SCA2 patient.
Weak PLFS induced low-amplitude, strongly phase-locked tremor, providing crucial functional information for target localization.
Optimal target selection using PLFS led to excellent post-operative tremor suppression.

Conclusions:

PLFS is a robust and effective method for evoking tremor when standard techniques fail, crucial for accurate DBS target localization.
This technique overcomes the challenge of intraoperative tremor disappearance, enhancing surgical precision and patient outcomes.
PLFS provides reliable functional data for identifying optimal DBS targets, leading to successful tremor suppression.