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Related Experiment Video

Updated: Sep 13, 2025

$MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor$

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor

Published on: December 13, 2017

Thalamic and Visual Network Dysfunction Relates to Tremor Response in Thalamic Deep Brain Stimulation.

Aimee E Morris^1,2, Babatunde Adeyemo², Meghan C Campbell^2,3

¹University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.

Tremor and Other Hyperkinetic Movements (New York, N.Y.)

|August 4, 2025

Summary

This summary is machine-generated.

Essential tremor (ET) involves brain network dysfunction. Pre-surgical functional connectivity, particularly in visual-somatomotor networks, predicts deep brain stimulation (DBS) response in ET patients.

Keywords:

Essential tremor functional connectivity resting-state fMRI

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Last Updated: Sep 13, 2025

$MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor$

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Published on: December 13, 2017

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Intra-Operative Behavioral Tasks in Awake Humans Undergoing Deep Brain Stimulation Surgery

Intra-Operative Behavioral Tasks in Awake Humans Undergoing Deep Brain Stimulation Surgery

Published on: January 6, 2011

Area of Science:

Neuroscience
Neurology
Medical Imaging

Background:

Essential tremor (ET) is a common movement disorder with unclear causes.
Deep brain stimulation (DBS) of the ventral intermediate thalamic nucleus (VIM DBS) effectively treats severe ET.
Understanding pre-surgical brain connectivity is crucial for predicting VIM DBS outcomes.

Purpose of the Study:

To investigate resting-state functional connectivity (FC) differences in medically-refractory ET patients compared to controls.
To determine if pre-surgical FC patterns predict clinical response to VIM DBS in ET.

Main Methods:

Resting-state functional connectivity MRI was performed on 21 ET patients and 34 controls.
Rigorous quality assurance minimized motion artifacts.
Object-oriented data analysis and multiple linear regression were used to analyze whole-brain, network, and regional FC, with a focus on motor thalamus connectivity.

Main Results:

Significant differences in whole-brain and regional motor thalamus FC were observed between ET patients and controls.
ET patients showed decreased thalamus-somatomotor, thalamus-visual, and auditory-visual FC.
Decreased occipital-parietal and cerebellar FC, along with increased primary motor cortex FC, were noted in ET patients. Visual-lateral somatomotor network FC negatively predicted tremor improvement.

Conclusions:

Findings suggest cerebello-thalamo-motor pathway dysfunction in ET.
Motor and visual network connectivity differences are linked to VIM DBS outcomes.
Further research into visual cortical networks' role in ET and DBS response is warranted.