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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT01404065
Other study ID # 2010-p-001978
Secondary ID
Status Terminated
Phase N/A
First received
Last updated
Start date December 2010
Est. completion date August 2014

Study information

Verified date April 2020
Source Spaulding Rehabilitation Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this study is to investigate the effects of Transcranial Direct Current Stimulation (tDCS) combined with watching a visual illusion on chronic pain due to spinal cord injury. The investigators hypothesize that active tDCS will reduce pain in subjects with spinal cord injury when compared to sham stimulation. The investigators will also measure changes in EEG data (alpha and beta frequencies) as well as motor cortex excitability.


Recruitment information / eligibility

Status Terminated
Enrollment 23
Est. completion date August 2014
Est. primary completion date August 2014
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 64 Years
Eligibility STUDY ELIGIBILITY CRITERIA

Inclusion Criteria:

1. Providing informed consent to participate in the study

2. 18 to 64 years old

3. With traumatic spinal cord injury (complete or incomplete) - for instance, due to fall, car accident or gun shot; (for spinal cord injury only)

4. Stable chronic pain for at least the three preceding months (for spinal cord injury only)

5. Score higher or equal to 4cm (0 cm= 'no pain' and 10cm='worst possible pain') on the Visual Analogue Scale (VAS) for pain perception at the baseline/start of the treatment (for spinal cord injury only)

6. Refractoriness to drugs for pain relief - such as tricyclic antidepressants, antiepileptic drugs and/or narcotics (pain resistant to at least 2 of these drugs supplied in adequate dosages for six months) (for spinal cord injury only)

7. Pain is not attributable to other causes, such as peripheral inflammation

Exclusion Criteria:

1. Clinically significant or unstable medical or psychiatric disorder

2. History of substance abuse

3. Neuropsychiatric comorbidities, including: Documented traumatic brain injury (TBI), defined as damage to brain tissue caused by an external mechanical force as evidenced by: loss of consciousness due to brain trauma, or post traumatic amnesia (PTA), or skull fracture, or objective neurological findings that can be reasonably attributed to TBI as assessed by the study PI

4. Implanted devices for pain control, such as vagal or deep brain stimulators

5. Contraindications to tDCS:

- metal in the head

- implanted brain medical devices

6. Pregnancy

7. Use of ventilators or ventilation support

8. Complete tetraplegic lesion (no motor function in the arms) (C3 to C8) as we will be measuring the motor evoked potential in the FDI (upper limbs); only tetraplegic patients with incomplete functional status and also as defined by the ability to elicit MEP in the FDI will be able to participate in this study

Study Design


Intervention

Procedure:
Transcranial Direct Current Stimulation (tDCS)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm^2, at an intensity of 2mA. For active tDCS, the subject will undergo stimulation for 20 minutes. For sham stimulation, the current will be ramped up and then down again (for 30 seconds total) to simulate the feeling of active stimulation.

Locations

Country Name City State
United States Spaulding Rehabilitation Hospital Boston Massachusetts

Sponsors (1)

Lead Sponsor Collaborator
Spaulding Rehabilitation Hospital

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Changes in EEG (alpha and beta activity) Determine whether treatment with tDCS coupled with visual illusion change cortical activity as assessed with electroencephalography (EEG). We hypothesize that tDCS plus visual illusion increase in alpha activity and inhibit beta activity and this will be associated with pain reduction in patients with moderate to severe below-level spinal cord injury (SCI) pain. EEG measurements will take place throughout the subject's participation in the study, measured at: baseline, immediately pre- and post- stimulation and at follow-up visits for a total of approximately 6 weeks. Measured for approximately 6 weeks
Secondary Changes in cortical excitability To investigate whether active tDCS combined with visual illusion induces changes in motor cortex and as indexed by single and paired-pulse transcranial magnetic stimulation (TMS) as compared with sham tDCS coupled with visual illusion. We will also determine whether these changes are correlated with the clinical outcome (pain reduction). TMS measurements will take place throughout the subject's participation in the study, measured at: baseline, immediately pre- and post- stimulation and at follow-up visits for a total of approximately 6 weeks. Measured for approximately 6 weeks
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