Effects of Transcranial Direct Current Stimulation (tDCS) on Inhibition and Brain Function in Primary Progressive Aphasia
NCT ID: NCT06473714
Last Updated: 2024-11-05
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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RECRUITING
NA
20 participants
INTERVENTIONAL
2024-11-04
2027-09-30
Brief Summary
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Although PPA is a progressive disorder, new techniques are being proposed to try to activate parts of the brain previously thought to be potentially inactive, due to the possibility of "neuroplasticity". This concept refers to our brain's modularity and learning potential. Transcranial direct current stimulation is a powerful neuromodulatory technique, in which a small current is applied to the participant's scalp through the targeted positioning of an anode and a cathode. The positive or anodal stimulation of tDCS is supposed to increase neuronal activity under the electrode, while cathodal stimulation is supposed to do the opposite.
This project will provide new insights into the nature of the neural activity underlying executive functions in people with primary progressive aphasia compared to those without. The investigators expect to find reduced amplitude of electrophysiological responses and lower accuracy in people with primary progressive aphasia compared with healthy controls. Given the results of previous studies showing the efficacy of tDCS protocols in the treatment of aphasia, the investigators might expect them to improve executive functions. If so, the investigators expect significantly greater electrophysiological responses after stimulation sessions compared with sham conditions. This project is of great clinical relevance. This research will improve current therapeutic protocols used in the treatment of PPA by providing critical findings on whether and how the use of tDCS improves executive functions. Crucially, the research will advance knowledge of executive function decline as a sensitive marker of PPA, informing us about the possibility of early detection of this disorder. At the same time, the investigators will analyze the possibility of controlling symptomatological evolution via the analysis of acoustic and vocal markers. This will enable us to observe the evolution of sensory markers such as acoustic markers according to symptomatological evolution. This will enable us to check whether acoustic markers correlate with the patient's level of symptomatological impairment and/or pathological physiological data.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
TREATMENT
DOUBLE
Study Groups
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tDCS
tDCS
Transcranial direct current stimulation of the dorsolateral prefrontal cortex will be made at 1,5mA
SHAM
SHAM
Transcranial direct current stimulation of the dorsolateral prefrontal cortex will not be made. The electrodes are placed on the skull and a slight but non-continuous intensity is applied.
Interventions
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tDCS
Transcranial direct current stimulation of the dorsolateral prefrontal cortex will be made at 1,5mA
SHAM
Transcranial direct current stimulation of the dorsolateral prefrontal cortex will not be made. The electrodes are placed on the skull and a slight but non-continuous intensity is applied.
Eligibility Criteria
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Inclusion Criteria
* Available for treatment and testing sessions
* able to read and speak French
* Be right-handed
Exclusion Criteria
* Post-stroke aphasia
* Language or cognitive disorders too severe to allow task performance or communication
* Pre-existing psychiatric disorders; severe depression, schizophrenia
* People with pacemakers or metal implants, epilepsy
* Presence of a medical condition that represents a contraindication to tDCS
* Active use of psychotropic drugs
* Treatment with tDCS or TMS in the last 3 months
* Additional language therapy
* Pregnancy or breast-feeding
18 Years
ALL
No
Sponsors
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Centre Hospitalier Universitaire de Nice
OTHER
Responsible Party
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Principal Investigators
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Auriane Gros, Pr
Role: PRINCIPAL_INVESTIGATOR
Centre Hospitalier Universitaire de Nice
Locations
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CHU de Nice
Nice, , France
Countries
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Central Contacts
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Facility Contacts
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Justine LEMAIRE
Role: primary
Other Identifiers
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23-AOI-07
Identifier Type: -
Identifier Source: org_study_id
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