Non-Invasive Modulation and Robotic Mapping of Motor Cortex in the Developing Brain

作者： Adrianna Giuffre1,2, Lauran Cole1,2,3, Hsing-Ching Kuo4,5, Helen L. Carlson2,4,5, Jeff Grab6, Adam Kirton2,3,4,5,7, Ephrem Zewdie3,4,5 1Department of Neurosciences,University of Calgary, 2Hotchkiss Brain Institute,University of Calgary, 3Cumming School of Medicine,University of Calgary, 4Department of Pediatrics,University of Calgary, 5Alberta Children's Hospital Research Institute,University of Calgary, 6Faculty of Medicine and Dentistry,University of Alberta, 7Department of Clinical Neurosciences,University of Calgary

简介：

Overview

This study presents protocols for modulating and mapping the motor cortex in children using the first pediatric TMS robot. The protocols aim to assess changes in brain function following early brain injuries, incorporating MRI imaging for precise neuronavigation and mapping.

Key Study Components

Area of Science

• Neuroscience
• Pediatric Neurology
• Transcranial Magnetic Stimulation (TMS)

Background

• The study investigates the motor cortex in healthy children and those with prior brain injuries.
• MRI imaging is integrated with neuronavigation to enhance the accuracy of motor mapping.
• Current applications of motor mapping are limited to research, not yet diagnostic.
• The technology improves safety and reduces human error during procedures.

Purpose of Study

• To establish robust protocols for motor mapping using robotic TMS.
• To explore brain reorganization following brain injury or intervention.
• To optimize the procedures for young participants for easier implementation.

Methods Used

• The study employs robotic TMS with integrated MRI neuronavigation.
• The biological model involves healthy children and those with prior brain injuries.
• Steps include creating anatomical maps, placing electrodes, and delivering TMS pulses.
• The methods prioritize safety with thorough pre-procedure checks and adjustments.
• Data collection is done through EMG for motor evoked potentials analysis.

Main Results

• Motor maps demonstrate significant changes in brain activity patterns post-intervention.
• tDCS and HD-tDCS show improved motor learning rates, particularly after substantial training.
• Responses indicate effective mapping and stimulation techniques that lower error rates in the robotic system.
• Comparative analyses of responses highlight improved motor skills in treatment groups.

Conclusions

• This study validates the feasibility of robotic TMS for pediatric motor mapping.
• It improves our understanding of motor cortex plasticity following brain interventions.
• The results suggest potential for clinical applications in pre-surgical planning for neurological disorders.

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