TMS-evoked Potentials During Heat Pain

Status Completed

Clinical Trial Summary

This study investigates the modification of the local-to-global connectivity pattern in response to experimental heat pain. Transcranial magnetic stimulation (TMS) will be applied to elicit electroencephalography (EEG) responses in healthy volunteers. The TMS-evoked potentials (TEPs) will be recorded and serve as a reflection of cortical reactivity to TMS. A thermal cutaneous heat stimulus will induce painful sensations.

Clinical Trial Description

Abnormal connectivity patterns interfere with the normal function of a given neuronal network, thus leading to circuit dysfunction and, subsequently, chronic pain. In the last few years, neuroscience has been heavily influenced by network science. This synergistic association provided a new framework for understanding brain function in health and how dysfunction in specific neuronal brain circuits can lead to symptoms. A network comprises nodes (e.g., areas of the brain) and edges (functional connections between nodes). An effective network can process and share large amounts of information while maintaining specificity and not allowing noise to contaminate the flow of information across the circuits. The network approach to brain functioning has been able to integrate what has been known for several decades as spatial structural anatomy with the time-varying streaming of information (connectivity) in a dynamic perspective. In this context, symptoms of diseases are seen as being correlated with specific network abnormalities, and therapeutic interventions as being associated with the normalisation of these abnormal patterns of connection. This study will investigate the responses of specific neuronal brain circuits to experimental heat pain in healthy volunteers. It has been hypothesised that the local-to-global connectivity pattern obtained by the stimulation of different cortical hubs (e.g., the primary motor and dorsolateral prefrontal cortices) will be described by TMS-EEG responses in healthy individuals, and the modification in cortical connectivity in experimental models will be described and compared it with a non-painful sensory stimulation of the same salience. ;

Study Design

Related Conditions & MeSH terms

Electroencephalography
Heat
Pain
Transcranial Magnetic Stimulation

Clinical Trial Details

NCT number	NCT05566444
Study type	Interventional
Source	Aalborg University
Contact
Status	Completed
Phase	N/A
Start date	October 1, 2022
Completion date	January 24, 2023

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

TMS-evoked Potentials During Heat Pain — TMS-EEG-heat

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms