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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05766059
Other study ID # 25C212
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date February 8, 2023
Est. completion date September 30, 2026

Study information

Verified date March 2023
Source Istituto Auxologico Italiano
Contact Nadia Bolognini, PhD
Phone +390261911
Email n.bolognini@auxologico.it
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Paired associative stimulation (PAS) is a non-invasive brain stimulation protocol, where two stimuli (a peripheral and a cortical one, the latter delivered with transcranial magnetic stimulation - TMS) are repeatedly associated to enhance plasticity in the brain. In the present study, a new cross-modal, visuo-motor PAS protocol - called "mirror-PAS"- will be tested as a possible non-invasive brain stimulation treatment in neurological rehabilitation to promote motor recovery and pain reduction. Participants will perform the standard PAS targeting the motor system and the recently developed mirror-PAS in two separate sessions. The investigators will compare the possible effect of the protocols in terms of neurophysiological and behavioral outcomes to identify the optimal PAS method to enhance plasticity and promote sensory-motor function.


Description:

The motor recovery of the upper limb function, particularly of the hand, is challenging in neurological rehabilitation. Transcranial magnetic stimulation (TMS) is a form of non-invasive brain stimulation that can enhance motor recovery, though promoting brain plasticity of the brain. In this study, researchers will use a TMS protocol called Paired Associative Stimulation (PAS), in which two stimuli (e.g., a cortical stimulus - delivered with TMS - and a peripheral stimulus) are repeatedly associated to promote associative plasticity in the primary motor cortex (M1). The objective is to explore the clinical efficacy of a newly developed cross-modal PAS protocol -the so-called "mirror-PAS"- as a possible motor rehabilitation treatment in patients with upper limb motor disorders, investigating its neurophysiological and behavioural effects. The innovative aspect of mirror-PAS is to act on a more extended visuomotor network, featured by the functional properties of the mirror neuron system (MNS). Indeed, in the mirror-PAS, a visual stimulus depicting a hand movement is repeatedly paired with a TMS pulse over M1. In the healthy, this protocol was found effective in modulating neurophysiological responses of the motor cortex (i..e, MEPs), hence inducing these effects bypassing the afferent somatosensory pathway exploited by the standard PAS protocols. This may represent a clinical advantage allowing the promotion of motor recovery through the induction of a plastic reorganization in the damaged motor system by gaining access through a potentially spared MNS. The project's first phase aims to assess the motor and neurophysiological effects of mirror-PAS in stroke patients with upper-limb hemiparesis, compared to the standard excitatory M1-PAS (whose effects are well known in the literature, even if still debated). In the second phase, we will test the efficacy of the mirror-PAS in a population of amputated patients affected by phantom limb pain (PLP).


Recruitment information / eligibility

Status Recruiting
Enrollment 36
Est. completion date September 30, 2026
Est. primary completion date September 30, 2026
Accepts healthy volunteers No
Gender All
Age group 18 Years to 85 Years
Eligibility Inclusion criteria for stroke patients: - age from 18 to 85 years - single, unilateral, hemispheric stroke (cortical or sub-cortical areas) - stroke confirmed by neuroimaging (CT or MRI) - stroke at least 4 months before enrollment - hemiparesis of the upper limb resulting from stroke or hemianesthesia clinically documented Exclusion criteria for stroke patients: - contraindications to TMS (Rossi et all, 2021) - other neurological conditions (e.g., Parkinson's Disease, Multiple Sclerosis, ALS) - other orthopedic condition that affected the hand (e.g., carpal tunnel syndrome) Inclusion criteria for PLP patients: - age from 18 to 90 years - amputation of one part of the upper limb at least 2 months before enrollment - presence of stable phantom limb pain at least 2 months prior to enrollment Exclusion criteria for PLP patients: - contraindications to TMS (Rossi et all, 2021) - other neurological, orthopedical or psychiatric conditions

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Transcranial Magnetic Stimulation
The standard PAS protocol will be compared with the mirrorPAS protocol.

Locations

Country Name City State
Italy Istituto Auxologico Italiano IRCCS Milan Lombardia

Sponsors (1)

Lead Sponsor Collaborator
Istituto Auxologico Italiano

Country where clinical trial is conducted

Italy, 

References & Publications (8)

Bolognini N, Russo C, Edwards DJ. The sensory side of post-stroke motor rehabilitation. Restor Neurol Neurosci. 2016 Apr 11;34(4):571-86. doi: 10.3233/RNN-150606. — View Citation

Castel-Lacanal E, Marque P, Tardy J, de Boissezon X, Guiraud V, Chollet F, Loubinoux I, Moreau MS. Induction of cortical plastic changes in wrist muscles by paired associative stimulation in the recovery phase of stroke patients. Neurorehabil Neural Repair. 2009 May;23(4):366-72. doi: 10.1177/1545968308322841. Epub 2008 Dec 5. — View Citation

Guidali G, Carneiro MIS, Bolognini N. Paired Associative Stimulation drives the emergence of motor resonance. Brain Stimul. 2020 May-Jun;13(3):627-636. doi: 10.1016/j.brs.2020.01.017. Epub 2020 Feb 5. — View Citation

Guidali G, Roncoroni C, Bolognini N. Paired associative stimulations: Novel tools for interacting with sensory and motor cortical plasticity. Behav Brain Res. 2021 Sep 24;414:113484. doi: 10.1016/j.bbr.2021.113484. Epub 2021 Jul 21. — View Citation

Hummel FC, Cohen LG. Non-invasive brain stimulation: a new strategy to improve neurorehabilitation after stroke? Lancet Neurol. 2006 Aug;5(8):708-12. doi: 10.1016/S1474-4422(06)70525-7. — View Citation

Kaur A, Guan Y. Phantom limb pain: A literature review. Chin J Traumatol. 2018 Dec;21(6):366-368. doi: 10.1016/j.cjtee.2018.04.006. Epub 2018 Dec 4. — View Citation

Rossi S, Antal A, Bestmann S, Bikson M, Brewer C, Brockmoller J, Carpenter LL, Cincotta M, Chen R, Daskalakis JD, Di Lazzaro V, Fox MD, George MS, Gilbert D, Kimiskidis VK, Koch G, Ilmoniemi RJ, Lefaucheur JP, Leocani L, Lisanby SH, Miniussi C, Padberg F, Pascual-Leone A, Paulus W, Peterchev AV, Quartarone A, Rotenberg A, Rothwell J, Rossini PM, Santarnecchi E, Shafi MM, Siebner HR, Ugawa Y, Wassermann EM, Zangen A, Ziemann U, Hallett M; basis of this article began with a Consensus Statement from the IFCN Workshop on "Present, Future of TMS: Safety, Ethical Guidelines", Siena, October 17-20, 2018, updating through April 2020. Safety and recommendations for TMS use in healthy subjects and patient populations, with updates on training, ethical and regulatory issues: Expert Guidelines. Clin Neurophysiol. 2021 Jan;132(1):269-306. doi: 10.1016/j.clinph.2020.10.003. Epub 2020 Oct 24. — View Citation

Stefan K, Kunesch E, Cohen LG, Benecke R, Classen J. Induction of plasticity in the human motor cortex by paired associative stimulation. Brain. 2000 Mar;123 Pt 3:572-84. doi: 10.1093/brain/123.3.572. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Change from baseline in motor-evoked potentials (MEP) [Phase 1, only in stroke patients] peak-to-peak MEP amplitude At baseline and after the administration of the PAS protocols
Primary Change in functional mapping of phantom limb cortical areas [Phase 2, only in PLP patients] At baseline and after the administration of the PAS protocols
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