- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT07561372
Adaptive Recruitment Curve Analysis Using Bayesian Modeling
Enhancing Speed and Accuracy of Motor Evoked Potential Recruitment Curve Analysis Using Hierarchical Bayesian Modeling
The purpose of this study is to better understand how electrical or magnetic stimulation affect the nervous system by optimizing the way researchers measure muscle responses. The relationship between stimulation intensity and muscle response is described by "neural recruitment curves," which are critical for monitoring the state of the nervous system during therapies like transcranial magnetic stimulation (TMS) and spinal cord stimulation (SCS).
This study tests a new, real-time computational approach based on our previously developed methods (Hierarchical Bayesian models) to estimate these recruitment curves more efficiently. The primary goal is to use this model to dynamically guide the experiment, automatically selecting the optimal stimulation intensities to test.
The investigators hypothesize that this optimized approach will accurately estimate the entire recruitment curve, or specific targets components of it like the motor threshold, using significantly fewer samples than standard methods. By reducing the number of measurements required, this approach aims to decrease experimental time and minimize participant burden, making future TMS and SCS therapies and experiments more feasible and efficient.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studiecontact
- Naam: James R McIntosh, PhD
- Telefoonnummer: +19294352335
- E-mail: jrm2263@cumc.columbia.edu
Studie Locaties
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New York
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New York, New York, Verenigde Staten, 10032
- Werving
- Columbia University Irving Medical Center
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Contact:
- James R McIntosh, PhD
- Telefoonnummer: 9294352335
- E-mail: jrm2263@cumc.columbia.edu
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Hoofdonderzoeker:
- James R McIntosh, PhD
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Healthy adult volunteers aged 18 years and older.
- Able to understand study procedures and provide written informed consent.
Exclusion Criteria:
- 1. History of adverse reaction to Transcranial Magnetic Stimulation (TMS) or non-invasive neurostimulation.
- 2. History of seizures, epilepsy, or family history of epilepsy.
- 3. History of stroke, brain injury, or illness causing brain injury.
- 4. History of head injury or neurosurgery.
- 5. History of neurological diseases, or central nervous system lesions.
- 6. Presence of metallic implants or foreign bodies in the head (outside of dental work/fillings).
- 7. Presence of implanted electronic or medical devices (e.g., cardiac pacemakers, medical pumps, implanted stimulators).
- 8. Current pregnancy or possibility of pregnancy.
- 9. Currently taking medications that alter cortical excitability or lower seizure threshold.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: NVT
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Test of developed methods
Participants undergo distinct experiments within a single session to compare different neurostimulation sampling algorithms.
Each experiment involves recruitment curve sampling with different methods (e.g., Uniform, Expected Information Gain) to evaluate the accuracy and efficiency of motor threshold.
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Standard uniform distribution sampling used as a baseline comparison.
Algorithm: Adaptive threshold hunting using the Parameter Estimation by Sequential Testing (PEST) algorithm.
The proposed algorithms will deliver stimulation by using this magnetic stimulation methodology.
The proposed algorithms will deliver stimulation by using this electrical stimulation methodology.
An active sampling algorithm for recruitment curve estimation.
An alternative active sampling algorithm for recruitment curve estimation.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Number of stimuli to reach a pre-defined threshold error
Tijdsspanne: Through completion of the study visit, 2-4 hours.
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Number of stimuli required for the compared methods to reach a pre-defined error threshold relative to the ground truth, computed from recruitment curves fitted after sampling using aggregated data.
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Through completion of the study visit, 2-4 hours.
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Number of stimuli to reach a pre-defined predictive curve error
Tijdsspanne: Through completion of the study visit, 2-4 hours.
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Number of stimuli required for the compared methods to reach a pre-defined error threshold relative to the ground truth, computed from recruitment curves fitted after sampling using aggregated data.
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Through completion of the study visit, 2-4 hours.
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Mean absolute error in a given parameter (e.g. threshold, predictive curve, slope) for a given number of stimuli
Tijdsspanne: Through completion of the study visit, 2-4 hours.
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The error of the methods under comparison, with the ground truth computed from recruitment curves fitted subsequent to sampling using aggregated data.
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Through completion of the study visit, 2-4 hours.
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: James R McIntosh, PhD, Columbia University
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Andere studie-ID-nummers
- AAAV6853
- 1R03NS141040-01A1 (Subsidie/contract van de Amerikaanse NIH)
Plan Individuele Deelnemersgegevens (IPD)
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Beschrijving IPD-plan
IPD-tijdsbestek voor delen
IPD-toegangscriteria voor delen
IPD delen Ondersteunend informatietype
- ANALYTIC_CODE
Informatie over medicijnen en apparaten, studiedocumenten
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product vervaardigd in en geëxporteerd uit de V.S.
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