- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07791966
Effects of Non-invasive Brain Stimulation on Pain Avoidance Behavior in Chronic Pain Patients
Alpha tACS and Pain Avoidance Behavior in Chronic Pain Patients
Pain avoidance helps with survival. However, chronic pain patients often avoid valued life activities fearing onset or exacerbation of pain. Hence, pain avoidance no longer protects, but reduces quality of life. The goal of this clinical trial is to learn if non-invasive brain stimulation technique called transcranial alternating current stimulation (tACS) impact pain avoidance behavior in chronic pain patients. tACS is a way to gently stimulate the brain using a small, portable device. It sends an extremely weak, continuous alternating current through the scalp. Participants will either get real tACS or a fake (sham) version. Real tACS will stimulate the brain in the alpha frequency (8-12 Hz) which has been found to influence pain avoidance behavior, whereas sham tACS will stimulate the brain in a different frequency that is not known to influence avoidance behavior. The main questions it aims to answer are:
Does tACS alter the way chronic pain patients confront pain in terms of avoidance behavior? How does tACS impact brain signals related to pain avoidance behavior?
Participants will:
- fill out self-administered questionnaires asking about their medication use, personality and temperament, mood, including anxiety and depression, current pain level, and any disability you have due to your pain.
- perform of a pain avoidance task before, during and after 'real' tACS or 'sham' tACS. They may also be asked to stay quiet before, during and after tACS. During this period, we will scan the brain using a neuroimaging device called Magnetoencephalography (MEG). Additionally, Electroencephalography (EEG) brain signals will also be collected using electrodes affixed to the scalp. We may also measure Skin conductance response (SCR) and electrocardiography (EKG) using electrodes affixed to the skin.
- also get a T1 MRI if they do not have an implanted SCS, DRG, intrathecal pump, or other similar device that are not MRI compatible.
연구 개요
상태
연구 유형
등록 (추정된)
단계
- 해당 없음
연락처 및 위치
연구 연락처
- 이름: Raghavan Gopalakrishnan
- 전화번호: 2164459322
- 이메일: gopalar@ccf.org
연구 장소
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Ohio
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Cleveland, Ohio, 미국, 44195
- 모병
- Cleveland Clinic
-
연락하다:
- Raghavan Gopalakrishnan
- 전화번호: 800-223-2273
- 이메일: gopalar@ccf.org
-
-
참여기준
자격 기준
공부할 수 있는 나이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
설명
Inclusion Criteria:
- Age 18 years or older
- Diagnosed with Complex Regional Pain Syndrome (CRPS) Type I or II, based on Budapest criteria
- 6 months or more of medically refractory severe pain
- Average daily pain for past 30 days >= 5 on 0-10 scale
- Presence of allodynia and/or hyperalgesia
- Lower extremity CRPS: bilateral or unilateral pain
- Not concurrently treated with neurostimulation therapies such as spinal cord stimulators (SCS)
- Absence of co-occurring severe psychiatric disorders (PHQ-9<19 and/or GAD-7<14)
Exclusion Criteria:
- Age under 18 years, pregnant women of any age
- Any co-occurring pain diagnosis that might confound with allodynia/hyperalgesia resulting from CRPS reflecting a malfunction in sensory processing within the CNS.
- Less than six months of medically refractory pain
- Average daily pain for past 30 days <5 on 0-10 scale
- Absence of allodynia and/or hyperalgesia
- Concurrent neurostimulation therapies such as SCS
- Severe disorders or conditions (e.g., cardiovascular, liver issues), terminal illness
- PHQ-9>19 and/or GAD-7>14 (severe depression/anxiety)
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 삼루타
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
실험적: alpha frequency tACS
|
Real tACS will stimulate the brain in the individual alpha frequency (8-12 Hz) measured from baseline MEG
active control tACS will stimulate the brain at 40Hz
|
|
활성 비교기: gamma frequency tACS
|
Real tACS will stimulate the brain in the individual alpha frequency (8-12 Hz) measured from baseline MEG
active control tACS will stimulate the brain at 40Hz
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
magnitude of alpha frequency band power
기간: Periprocedural
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measured using MEG/EEG from resting-state and during the performance of pain avoidance task.
The MEG/EEG neural signals will be transformed to frequency domain to measure the magnitude of power in the alpha band.
|
Periprocedural
|
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
standard deviation in R-R length
기간: Periprocedural
|
standard deviation in R-R length (SDNN), a measure of heart rate variability from RR interval tachogram derived from EKG.
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Periprocedural
|
|
number of spontaneous skin conductance fluctuations
기간: Periprocedural
|
number of spontaneous skin conductance fluctuations will be measured from galvanic skin conductance response time-series data.
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Periprocedural
|
공동 작업자 및 조사자
간행물 및 유용한 링크
일반 간행물
- Gopalakrishnan R, Sonneborn C, Baillet S, Machado AG, Wager TD, Roy M. Neurophysiological encoding of aversive prediction errors. Pain. 2025 Dec 1;166(12):e732-e745. doi: 10.1097/j.pain.0000000000003712. Epub 2025 Jul 16.
- Malan NS, Baillet S, Tankha P, Roy M, Gopalakrishnan R. Altered cortical alpha modulations and connectivity in complex regional pain syndrome. J Pain. 2026 Feb;39:105595. doi: 10.1016/j.jpain.2025.105595. Epub 2025 Nov 7.
- Gopalakrishnan R, Malan NS, Sonneborn C, Hogue O, Tankha P, Baillet S, Roy M. Mechanisms Underlying Pain Avoidance in Complex Regional Pain Syndrome. Eur J Pain. 2026 Aug;30(7):e70339. doi: 10.1002/ejp.70339.
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- 26-220
- R21AT013595 (미국 NIH 보조금/계약)
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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