Safety Study Based on Transcranial Electrical Stimulation in Chile: a Case Series Study
NCT ID: NCT04245059
Last Updated: 2020-11-05
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
3 participants
INTERVENTIONAL
2019-12-01
2021-12-31
Brief Summary
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TDCS secondary effects have been measured in several studies. The most frequent secondary effects described in literature are a mild tingling sensation, moderate fatigue, itching sensation, slight burning and mild pain sensation under the electrodes during the stimulation.
The present study is focused in evaluate the safety of a transcranial direct current stimulation (TDCS) service by measuring secondary effects incidence in a group of healthy subjects. In addition, manual dexterity and upper limb strength will be measure to identify improvement in motor performance after intervention.
Detailed Description
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The tES technique is classified into three types according to the waveform of the stimulation current that is applied: Transcranial direct current stimulation (tDCS),Transcranial Alternating Current Stimulation (tACS) and Transcranial random noise stimulation (tRNS). Additionally, the Sham mode can be used for controlled experiments.
TDCS is a neuromodulatory technique that delivers low-intensity, direct current to cortical areas facilitating or inhibiting spontaneous neuronal activity. In general, the current is injected into the brain (anodal stimulation) over a cortical region leading to excitatory effects; and collected from the brain (cathodal stimulation) leading to inhibitory effects. tDCS produces short term effects on neuronal excitability, and long lasting plastic after/effects involving synaptic modification.
Research has shown that applying anodal tDCS to the non-dominant motor cortex can improve motor performance for the non-dominant hand, presumably by means of changes in synaptic plasticity between neurons. Other studies suggest improvement on cognitive functions such as memory, language, and attention after a tDCS program.
TDCS secondary effects have been measured in several studies. The most frequent secondary effects described in literature are a mild tingling sensation, moderate fatigue, itching sensation, slight burning and mild pain sensation under the electrodes during the stimulation. A visual sensation, associated with switching on and off the stimulation, have been also described. Less frequent are the difficulties in concentrating, headache, felt nervous or overexcited and nausea after the stimulation.
The present study is focused in evaluate the safety of a TDCS pilot program by measuring secondary effects incidence in a group of healthy subjects. In addition, manual dexterity and upper limb strength will be measure to identify improvement in motor performance after intervention.
Conditions
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Study Design
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NA
SINGLE_GROUP
TREATMENT
NONE
Study Groups
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Transcranial Direct Current Stimulation
Each subject will receive transcranial electrical stimulation at primary motor cortex in both hemispheres. The pilot program will include 12 sessions with a frequency of 3 times per week during 4 weeks. Therefore, during tDCS sessions, subjects will receive stimulation for 20 minutes with a current of 2.0 milliamp using 6x4 cm electrodes. The participants will also complete a set of manual dexterity, grip and pinch tests bilaterally at baseline and post-intervention to determine if the subject responds to tDCS. Thus, each session will be monitored on safety aspects of the subjects with emphasis on skin disorders and other possible side effects of tDCS.
Multi-channel Transcranial direct current stimulation
A commercial tDCS device will be use in this study. The device is a wireless multi-channel transcranial direct current stimulator that incorporates an 8-channel headcap for stimulation through gel electrodes or classic sponge electrodes. The device is integrated with a user interface for the configuration and monitoring of the stimulus parameters and a fast multifocal simulation of the tDCS electric field using an advanced brain model
Interventions
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Multi-channel Transcranial direct current stimulation
A commercial tDCS device will be use in this study. The device is a wireless multi-channel transcranial direct current stimulator that incorporates an 8-channel headcap for stimulation through gel electrodes or classic sponge electrodes. The device is integrated with a user interface for the configuration and monitoring of the stimulus parameters and a fast multifocal simulation of the tDCS electric field using an advanced brain model
Eligibility Criteria
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Inclusion Criteria
* Both gender
* Informed consent accepted
* Adults
Exclusion Criteria
* Mental diseases
* Injuries in the scalp skin
* Inflammatory tegumentary diseases
* Migraines
* Medication or substances affecting central nervous system
* Presence of chronic diseases
* Presence of degenerative diseases
* Pregnancy
18 Years
65 Years
ALL
Yes
Sponsors
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Corporación de Rehabilitación Club de Leones Cruz del Sur
OTHER
Responsible Party
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Principal Investigators
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Patricio E Barría Aburto, MSc.
Role: PRINCIPAL_INVESTIGATOR
Corporación de Rehabilitacion Club de Leones Cruz del Sur
Karim S Baleta Abarza, Lic.
Role: PRINCIPAL_INVESTIGATOR
Corporación de Rehabilitacion Club de Leones Cruz del Sur
Locations
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Corporación de Rehabilitación Club de Leones Cruz del Sur
Punta Arenas, Region of Magallanes, Chile
Countries
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References
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Brunoni AR, Nitsche MA, Bolognini N, Bikson M, Wagner T, Merabet L, Edwards DJ, Valero-Cabre A, Rotenberg A, Pascual-Leone A, Ferrucci R, Priori A, Boggio PS, Fregni F. Clinical research with transcranial direct current stimulation (tDCS): challenges and future directions. Brain Stimul. 2012 Jul;5(3):175-195. doi: 10.1016/j.brs.2011.03.002. Epub 2011 Apr 1.
Vines BW, Cerruti C, Schlaug G. Dual-hemisphere tDCS facilitates greater improvements for healthy subjects' non-dominant hand compared to uni-hemisphere stimulation. BMC Neurosci. 2008 Oct 28;9:103. doi: 10.1186/1471-2202-9-103.
Almousa A, Alajaji R, Alaboudi M, Al-Sultan F, Bashir S. Safety of Transcranial Direct Current Stimulation of Frontal, Parietal, and Cerebellar Regions in Fasting Healthy Adults. Behav Sci (Basel). 2018 Sep 10;8(9):81. doi: 10.3390/bs8090081.
Paulus W. Transcranial electrical stimulation (tES - tDCS; tRNS, tACS) methods. Neuropsychol Rehabil. 2011 Oct;21(5):602-17. doi: 10.1080/09602011.2011.557292. Epub 2011 Aug 5.
Other Identifiers
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CorporacionRCLCS0002
Identifier Type: -
Identifier Source: org_study_id