{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=pain+perception&page=8",
    "query": {
      "intervention": "pain perception",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 267,
    "total_pages": 27,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=pain+perception&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=pain+perception&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T11:45:39.582Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT07137715",
      "title": "Psychological Options for Wellness and Recovery (POWeR) Trial for Veterans With Chronic Back/Neck Pain",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain",
        "Back Pain",
        "Back Pain Lower Back Chronic",
        "Neck Pain"
      ],
      "interventions": [
        {
          "name": "Pain reprocessing therapy (PRT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive Behavioral Therapy for Chronic Pain (CBT-CP)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 360,
      "start_date": "2026-03-27",
      "completion_date": "2028-09",
      "has_results": false,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07137715"
    },
    {
      "nct_id": "NCT07071350",
      "title": "Randomized Controlled Trial of Treatment to Optimize Heart Rate Variability for Persistent Post-Concussion Symptoms",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Autonomic Nervous System Disease",
        "Concussive Injury",
        "Mild Traumatic Brain Injury",
        "Post Traumatic Stress Disorder",
        "Persistent Post Concussion Syndrome"
      ],
      "interventions": [
        {
          "name": "HRV Coherence Ratio",
          "type": "OTHER"
        },
        {
          "name": "NSI",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pittsburgh Sleep Quality Index (PSQI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quantitative Sleep Measures",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient Global Impression of Change (PGIC)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive Performance/NIH Toolbox Cognitive Battery",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pain Interference/TBI-QoL Pain Interference Short-Form",
          "type": "OTHER"
        },
        {
          "name": "Patient Health Questionnaire-9 (PHQ-9)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "PTSD Checklist for DSM-5 (PCL-5)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "HRV Biofeedback (HRV-B)",
          "type": "OTHER"
        },
        {
          "name": "Psychoeducational (Edu) Comparator Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 148,
      "start_date": "2025-09-02",
      "completion_date": "2028-09",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07071350"
    },
    {
      "nct_id": "NCT05188183",
      "title": "Pragmatic Trial of Remote tDCS and Somatosensory Training for Phantom Limb Pain With Machine Learning to Predict Treatment Response",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Phantom Limb Pain"
      ],
      "interventions": [
        {
          "name": "M1 anodal home-based tDCS",
          "type": "DEVICE"
        },
        {
          "name": "Somatosensory Training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Spaulding Rehabilitation Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 290,
      "start_date": "2022-09-01",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-19",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05188183"
    },
    {
      "nct_id": "NCT00219531",
      "title": "Effect of Menstrual Cycle on Central Nervous System (CNS) Processing of Gut Stimuli in Irritable Bowel Syndrome (IBS) and Control",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Irritable Bowel Syndrome"
      ],
      "interventions": [
        {
          "name": "perception of rectal balloon distention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 48,
      "start_date": "1999-03",
      "completion_date": "2015-02",
      "has_results": false,
      "last_update_posted_date": "2017-11-29",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00219531"
    },
    {
      "nct_id": "NCT04199780",
      "title": "Effects of tDCS Combined With CBI on Postsurgical Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Total Knee Arthroplasty (Postoperative Pain)",
        "Total Hip Arthroplasty (Postoperative Pain)"
      ],
      "interventions": [
        {
          "name": "Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "Cognitive-Behavioral (CB) intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 106,
      "start_date": "2021-01-11",
      "completion_date": "2026-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04199780"
    },
    {
      "nct_id": "NCT05296642",
      "title": "Exercise Induced Hypoalgesia Diabetes",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetic Peripheral Neuropathy",
        "Diabetic Peripheral Neuropathic Pain"
      ],
      "interventions": [
        {
          "name": "Moderate Cycling",
          "type": "OTHER"
        },
        {
          "name": "Personalized Tourniquet System",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-08-01",
      "completion_date": "2023-08-31",
      "has_results": false,
      "last_update_posted_date": "2022-05-25",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05296642"
    },
    {
      "nct_id": "NCT02024802",
      "title": "Compounded Pain Creams and Patient Perception",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neurologic Pain",
        "Nociceptive Pain"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Marwood LowCost Pharmacy",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 0,
      "start_date": "2014-01",
      "completion_date": "2015-01",
      "has_results": false,
      "last_update_posted_date": "2014-07-08",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02024802"
    },
    {
      "nct_id": "NCT02241967",
      "title": "Dose Dependent Effects of tDCS on Post-Operative Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Total Knee Arthroplasty (Postoperative Pain)",
        "Total Hip Arthroplasty(Postoperative Pain)"
      ],
      "interventions": [
        {
          "name": "4 Real sessions of Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "2 Real Sessions of Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "1 Real Session of Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "Sham Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "19 Years to 90 Years"
      },
      "enrollment_count": 119,
      "start_date": "2016-01-07",
      "completion_date": "2020-07-02",
      "has_results": true,
      "last_update_posted_date": "2022-07-13",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02241967"
    },
    {
      "nct_id": "NCT01619579",
      "title": "Investigation of AVACEN Thermal Exchange System for Fibromyalgia Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Fibromyalgia"
      ],
      "interventions": [
        {
          "name": "AVACEN Thermal Exchange System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Avacen, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 22,
      "start_date": "2011-06",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2017-02-01",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01619579"
    },
    {
      "nct_id": "NCT04139161",
      "title": "Cycling Intervention on Symptoms of Patients With Knee Osteoarthritis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Q-Factor Intervention",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "The University of Tennessee, Knoxville",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 30,
      "start_date": "2019-12-17",
      "completion_date": "2021-05-31",
      "has_results": false,
      "last_update_posted_date": "2020-04-07",
      "last_synced_at": "2026-10-07T11:45:39.582Z",
      "location_count": 1,
      "location_summary": "Knoxville, Tennessee",
      "locations": [
        {
          "city": "Knoxville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04139161"
    }
  ]
}