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Transcranial Direct Current Stimulation to Enhance Training Effectiveness in Chronic Post-Stroke Aphasia

Primary Purpose

Aphasia, Post-stroke

Status
Recruiting
Phase
Not Applicable
Locations
Germany
Study Type
Interventional
Intervention
Anodal transcranial direct current stimulation (tDCS) combined with speech-language therapy (SLT, including naming therapy and communicative-pragmatic therapy)
Sponsored by
University Medicine Greifswald
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Aphasia focused on measuring Rehabilitation, Intensive speech-language therapy, Transcranial direct current stimulation

Eligibility Criteria

18 Years - 70 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • left-hemisphere cortical or subcortical stroke with first-ever aphasic symptoms
  • at least 6 months post-onset of stroke;
  • aphasia, as determined by the Aachen Aphasia Test (AAT);
  • 13 moderate-to-severe word finding difficulties (maximum of 75% correct items on a computerized naming task at baseline);
  • at least 1 correct reaction on the first part of the AAT subscale Token Test (ensuring basic comprehension skills);
  • at least 1 point on the communicative task of the AAT subscale Spontaneous Speech (ensuring basic communication abilities);
  • German as first language;
  • intact left-hemisphere "hand knob" without right prefrontal lesions for placement of tDCS electrodes, as confirmed by magnetic resonance imaging or computer tomography scans.

Exclusion Criteria:

  • contraindications for tDCS (e.g., cardiac pacemaker, history of seizures, implanted metal inside the head);
  • more than one clinically apparent stroke with aphasic symptoms;
  • other severe neurological diseases (e.g., brain tumor, and subdural hematoma);
  • epilepsy with seizures during the last 12 months prior to study start and/or intake of sedating antiepileptic drugs (barbiturates and benzodiazepines),
  • history of severe alcohol or drug abuse;
  • current severe depression;
  • current psychosis or other relevant psychiatric condition;
  • very severe apraxia of speech, as revealed by Hierarchical Word Lists;
  • severe non-verbal cognitive deficits, as indicated by the Corsi Block-Tapping Task;
  • severe uncontrolled medical problems;
  • severely impaired vision or hearing that prevents patients from engaging in intensive SLT;
  • changes in centrally active drugs within 2 weeks prior to study inclusion.

Sites / Locations

  • Aphasiestation RWTH AachenRecruiting
  • Kliniken Schmieder AllensbachRecruiting
  • Schön Klinik Bad Aibling HarthausenRecruiting
  • Wicker Klinik Bad HomburgRecruiting
  • Moritz Kliniken Bad KlosterlausnitzRecruiting
  • Median Klinik Bad SülzeRecruiting
  • ZAR BerlinRecruiting
  • Kliniken Schmieder GailingenRecruiting
  • University medicine Greifswald, department of NeurologyRecruiting
  • BDH-Klinik Greifswald gGmbHRecruiting
  • Klinikum Christophsbad GöppingenRecruiting
  • Kliniken Schmieder HeidelbergRecruiting
  • Hospital zum Heiligen Geist KempenRecruiting
  • Tagesklinik MPI LeipzigRecruiting
  • Logo Zentrum LindlarRecruiting
  • TheraVent aktiv MarbachRecruiting
  • St. Mauritius TherapieklinikRecruiting
  • Aphasie-Zentrum Vechta gGmbHRecruiting

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Sham Comparator

Arm Label

Experimental group

Control group

Arm Description

Anodal transcranial direct current stimulation (tDCS) combined with speech-language therapy (SLT, including naming therapy and communicative-pragmatic therapy)

Placebo stimulation (using sham-tDCS) combined with SLT

Outcomes

Primary Outcome Measures

Change in communication ability, as assessed by the Amsterdam Nijmegen Everyday Language Test
Amsterdam Nijmegen Everyday Language Test (A-scale; parallel versions used in counterbalanced order across participants); cf. Blomert L, Kean ML, Koster C, et al. Amsterdam-Nijmegen Everyday Language Test-Construction, Reliability and Validity. Aphasiology 1994; 8: 381-407.

Secondary Outcome Measures

Change in naming ability, as assessed based on personally relevant trained and untrained items, consistent with previous work (see description)
Personally relevant trained and untrained items, consistent with previous work; cf. Meinzer M, Darkow R, Lindenberg R, et al. Electrical stimulation of the motor cortex enhances treatment outcome in post-stroke aphasia. Brain 2016; 139: 1152-1163.
Change in (non-)verbal communication, as assessed by the Scenario Test
Scenario Test; cf. Nobis-Bosch R, Abel S, Krzok F, et al. Szenario Test-Testung verbaler und nonverbaler Aspekte aphasischer Kommunikation. ProLog, in preparation.
Change in (non-)verbal communication, as assessed by the Communicative Effectiveness Index
Communicative Effectiveness Index; cf. Lomas J, Pickard L, Bester S, et al. The Communicative Effectiveness Index: development and psychometric evaluation of a functional communication measure for adult aphasia. J Speech Hear Disord 1989; 54: 113-124.
Change in attention and executive function, as assessed by the subscales Go/NoGo and Alertness from Test of Attentional Performance
Subscales Go/NoGo and Alertness from Test of Attentional Performance; cf. Zimmermann P and Fimm B. Testbatterie zur Aufmerksamkeitsprüfung (TAP). Herzogenrath: PSYTEST Verlag, 2002.
Change in non-verbal episodic memory, as assessed by the Figure Recognition Task from Benton Visual Retention Test
Figure Recognition Task from Benton Visual Retention Test; cf. Benton Sivan A and Spreen O. Benton Test. Bern: Huber, 2009.
Change in mood, as assessed by the German version of the 10-item Stroke Aphasic Depression Questionnaire
German version of the 10-item Stroke Aphasic Depression Questionnaire (SADQH-10); cf. Cobley CS, Thomas SA, Lincoln NB, et al. The assessment of low mood in stroke patients with aphasia: reliability and validity of the 10-item Hospital version of the Stroke Aphasic Depression Questionnaire (SADQH-10). Clin Rehabil 2012; 26: 372-381.
Change in health-related quality of life, as assessed by the Stroke and Aphasia Quality of Life Scale
Stroke and Aphasia Quality of Life Scale (SAQOL-39g); cf. Hilari K, Lamping DL, Smith SC, et al. Psychometric properties of the Stroke and Aphasia Quality of Life Scale (SAQOL-39) in a generic stroke population. Clin Rehabil 2009; 23: 544-557.
Change in health-related quality of life, as assessed by the EuroQol Health-Related Quality of Life Questionnaire
EuroQol Health-Related Quality of Life Questionnaire (EQ-5D-5L); cf. EuroQol G. EuroQol-a new facility for the measurement of health-related quality of life. Health Policy 1990; 16: 199-208.
Change in direct and indirect costs during the 12-month study period, as assessed by the self-developed Patient Resource Consumption Questionnaire
Direct and indirect costs during the 12-month study period, as determined by the self-developed Patient Resource Consumption Questionnaire considering common standardized unit cost assumptions.
Change in direct and indirect costs during the 12-month study period, as assessed by the Quality-Adjusted Life Years
Quality-Adjusted Life Years; cf. Whitehead SJ and Ali S. Health outcomes in economic evaluation: the QALY and utilities. Br Med Bull 2010; 96: 5-21.
Change in unpaid support provided by family members or friends, as assessed by the Burden of informal caregivers
Burden of informal caregivers; cf. van Exel NJ, Koopmanschap MA, van den Berg B, et al. Burden of informal caregiving for stroke patients. Identification of caregivers at risk of adverse health effects. Cerebrovasc Dis 2005; 19: 11-17.

Full Information

First Posted
April 16, 2019
Last Updated
June 5, 2023
Sponsor
University Medicine Greifswald
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1. Study Identification

Unique Protocol Identification Number
NCT03930121
Brief Title
Transcranial Direct Current Stimulation to Enhance Training Effectiveness in Chronic Post-Stroke Aphasia
Official Title
Transcranial Direct Current Stimulation to Enhance Training Effectiveness in Chronic Post-Stroke Aphasia
Study Type
Interventional

2. Study Status

Record Verification Date
June 2023
Overall Recruitment Status
Recruiting
Study Start Date
December 6, 2019 (Actual)
Primary Completion Date
February 4, 2024 (Anticipated)
Study Completion Date
August 4, 2024 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University Medicine Greifswald

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
The aim of the study is to investigate whether intensive speech-language therapy (SLT) combined with anodal transcranial direct current stimulation (tDCS) leads to better communication performance than SLT combined with placebo stimulation (using sham-tDCS).
Detailed Description
Intensive speech-language therapy (SLT) can promote recovery from chronic post-stroke aphasia, but effect sizes are moderate. This highlights the pressing need to explore adjunct strategies, such as transcranial direct current stimulation (tDCS), to enhance training effectiveness. Recently, the investigators provided evidence from a single-center randomized controlled trial (RCT) suggesting that anodal-tDCS of the left primary motor cortex (M1) improves naming and communication ability in chronic post-stroke aphasia, with medium-to-large effect sizes. However, prior to integration into clinical routine, a multi-center RCT with adequate power, duration, and outcomes relevant to everyday life is required, which is the goal of the present study. After trial completion, a workshop with relevant stakeholders will ensure transfer into best-practice guidelines.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Aphasia, Post-stroke
Keywords
Rehabilitation, Intensive speech-language therapy, Transcranial direct current stimulation

7. Study Design

Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Model Description
Two daily sessions of intensive speech-language therapy combined with transcranial direct current stimulation of the left primary motor cortex (M1)
Masking
Investigator
Allocation
Randomized
Enrollment
130 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Experimental group
Arm Type
Experimental
Arm Description
Anodal transcranial direct current stimulation (tDCS) combined with speech-language therapy (SLT, including naming therapy and communicative-pragmatic therapy)
Arm Title
Control group
Arm Type
Sham Comparator
Arm Description
Placebo stimulation (using sham-tDCS) combined with SLT
Intervention Type
Other
Intervention Name(s)
Anodal transcranial direct current stimulation (tDCS) combined with speech-language therapy (SLT, including naming therapy and communicative-pragmatic therapy)
Intervention Description
Two daily sessions of intensive SLT combined with tDCS of the left primary motor cortex (M1)
Primary Outcome Measure Information:
Title
Change in communication ability, as assessed by the Amsterdam Nijmegen Everyday Language Test
Description
Amsterdam Nijmegen Everyday Language Test (A-scale; parallel versions used in counterbalanced order across participants); cf. Blomert L, Kean ML, Koster C, et al. Amsterdam-Nijmegen Everyday Language Test-Construction, Reliability and Validity. Aphasiology 1994; 8: 381-407.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Secondary Outcome Measure Information:
Title
Change in naming ability, as assessed based on personally relevant trained and untrained items, consistent with previous work (see description)
Description
Personally relevant trained and untrained items, consistent with previous work; cf. Meinzer M, Darkow R, Lindenberg R, et al. Electrical stimulation of the motor cortex enhances treatment outcome in post-stroke aphasia. Brain 2016; 139: 1152-1163.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Title
Change in (non-)verbal communication, as assessed by the Scenario Test
Description
Scenario Test; cf. Nobis-Bosch R, Abel S, Krzok F, et al. Szenario Test-Testung verbaler und nonverbaler Aspekte aphasischer Kommunikation. ProLog, in preparation.
Time Frame
Before the 3-week treatment period; 6-month follow-up
Title
Change in (non-)verbal communication, as assessed by the Communicative Effectiveness Index
Description
Communicative Effectiveness Index; cf. Lomas J, Pickard L, Bester S, et al. The Communicative Effectiveness Index: development and psychometric evaluation of a functional communication measure for adult aphasia. J Speech Hear Disord 1989; 54: 113-124.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Title
Change in attention and executive function, as assessed by the subscales Go/NoGo and Alertness from Test of Attentional Performance
Description
Subscales Go/NoGo and Alertness from Test of Attentional Performance; cf. Zimmermann P and Fimm B. Testbatterie zur Aufmerksamkeitsprüfung (TAP). Herzogenrath: PSYTEST Verlag, 2002.
Time Frame
Before the 3-week treatment period; 6-month follow up
Title
Change in non-verbal episodic memory, as assessed by the Figure Recognition Task from Benton Visual Retention Test
Description
Figure Recognition Task from Benton Visual Retention Test; cf. Benton Sivan A and Spreen O. Benton Test. Bern: Huber, 2009.
Time Frame
Before the 3-week treatment period; 6-month follow up
Title
Change in mood, as assessed by the German version of the 10-item Stroke Aphasic Depression Questionnaire
Description
German version of the 10-item Stroke Aphasic Depression Questionnaire (SADQH-10); cf. Cobley CS, Thomas SA, Lincoln NB, et al. The assessment of low mood in stroke patients with aphasia: reliability and validity of the 10-item Hospital version of the Stroke Aphasic Depression Questionnaire (SADQH-10). Clin Rehabil 2012; 26: 372-381.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Title
Change in health-related quality of life, as assessed by the Stroke and Aphasia Quality of Life Scale
Description
Stroke and Aphasia Quality of Life Scale (SAQOL-39g); cf. Hilari K, Lamping DL, Smith SC, et al. Psychometric properties of the Stroke and Aphasia Quality of Life Scale (SAQOL-39) in a generic stroke population. Clin Rehabil 2009; 23: 544-557.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Title
Change in health-related quality of life, as assessed by the EuroQol Health-Related Quality of Life Questionnaire
Description
EuroQol Health-Related Quality of Life Questionnaire (EQ-5D-5L); cf. EuroQol G. EuroQol-a new facility for the measurement of health-related quality of life. Health Policy 1990; 16: 199-208.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups
Title
Change in direct and indirect costs during the 12-month study period, as assessed by the self-developed Patient Resource Consumption Questionnaire
Description
Direct and indirect costs during the 12-month study period, as determined by the self-developed Patient Resource Consumption Questionnaire considering common standardized unit cost assumptions.
Time Frame
Before the 3-week treatment period; 6- and 12-month follow ups
Title
Change in direct and indirect costs during the 12-month study period, as assessed by the Quality-Adjusted Life Years
Description
Quality-Adjusted Life Years; cf. Whitehead SJ and Ali S. Health outcomes in economic evaluation: the QALY and utilities. Br Med Bull 2010; 96: 5-21.
Time Frame
Before the 3-week treatment period; 6- and 12-month follow ups
Title
Change in unpaid support provided by family members or friends, as assessed by the Burden of informal caregivers
Description
Burden of informal caregivers; cf. van Exel NJ, Koopmanschap MA, van den Berg B, et al. Burden of informal caregiving for stroke patients. Identification of caregivers at risk of adverse health effects. Cerebrovasc Dis 2005; 19: 11-17.
Time Frame
Before the 3-week treatment period; immediately after the 3-week treatment period; 6- and 12-month follow ups

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
70 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: left-hemisphere cortical or subcortical stroke with first-ever aphasic symptoms at least 6 months post-onset of stroke; aphasia, as determined by the Aachen Aphasia Test (AAT); 13 moderate-to-severe word finding difficulties (maximum of 75% correct items on a computerized naming task at baseline); at least 1 correct reaction on the first part of the AAT subscale Token Test (ensuring basic comprehension skills); at least 1 point on the communicative task of the AAT subscale Spontaneous Speech (ensuring basic communication abilities); German as first language; intact left-hemisphere "hand knob" without right prefrontal lesions for placement of tDCS electrodes, as confirmed by magnetic resonance imaging or computer tomography scans. Exclusion Criteria: contraindications for tDCS (e.g., cardiac pacemaker, history of seizures, implanted metal inside the head); more than one clinically apparent stroke with aphasic symptoms; other severe neurological diseases (e.g., brain tumor, and subdural hematoma); epilepsy with seizures during the last 12 months prior to study start and/or intake of sedating antiepileptic drugs (barbiturates and benzodiazepines), history of severe alcohol or drug abuse; current severe depression; current psychosis or other relevant psychiatric condition; very severe apraxia of speech, as revealed by Hierarchical Word Lists; severe non-verbal cognitive deficits, as indicated by the Corsi Block-Tapping Task; severe uncontrolled medical problems; severely impaired vision or hearing that prevents patients from engaging in intensive SLT; changes in centrally active drugs within 2 weeks prior to study inclusion.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Agnes Floeel, Prof.
Phone
+49 3834 86 6815
Email
agnes.floeel@uni-greifswald.de
First Name & Middle Initial & Last Name or Official Title & Degree
Nina Unger
Phone
+49 3834 86 6749
Email
nina.unger@uni-greifswald.de
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Agnes Floeel, Prof.
Organizational Affiliation
University Medicine Greifswald
Official's Role
Principal Investigator
Facility Information:
Facility Name
Aphasiestation RWTH Aachen
City
Aachen
ZIP/Postal Code
52074
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Beate Schumann
Phone
0241/8088556
Email
bschumann@ukaachen.de
Facility Name
Kliniken Schmieder Allensbach
City
Allensbach
ZIP/Postal Code
78476
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Berthold Gröne
Phone
07533/8081456
Email
b.groene@kliniken-schmieder.de
Facility Name
Schön Klinik Bad Aibling Harthausen
City
Bad Aibling
ZIP/Postal Code
83209
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Gudrun Klingenberg, Dr.
Phone
08061/9031581
Email
gklingenberg@schoen-klinik.de
Facility Name
Wicker Klinik Bad Homburg
City
Bad Homburg
ZIP/Postal Code
61348
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Carla Berghoff, Dr.
Phone
06172/103160
Email
berghoff@wickerklinik.de
Facility Name
Moritz Kliniken Bad Klosterlausnitz
City
Bad Klosterlausnitz
ZIP/Postal Code
07639
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Anke Oertel
Phone
036601/ 49521
Email
anke.oertel@moritz-klinik.de
Facility Name
Median Klinik Bad Sülze
City
Bad Sülze
ZIP/Postal Code
18334
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Daniela Fürst
Phone
038229/72530
Email
daniela.fuerst@median-kliniken.de
Facility Name
ZAR Berlin
City
Berlin
ZIP/Postal Code
10115
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Anke Nicklas
Phone
030/285184555
Email
nicklas@zar-berlin.de
Facility Name
Kliniken Schmieder Gailingen
City
Gailingen
ZIP/Postal Code
78262
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Berthold Gröne
Phone
07533/8081456
Email
b.groene@kliniken-schmieder.de
Facility Name
University medicine Greifswald, department of Neurology
City
Greifswald
ZIP/Postal Code
17475
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Agnes Floeel, Prof
Phone
+49 (03834) 86 6815
Email
agnes.floeel@uni-greifswald.de
First Name & Middle Initial & Last Name & Degree
Nina Unger
Phone
+49 (03834) 86 6749
Email
nina.unger@uni-greifswald.de
Facility Name
BDH-Klinik Greifswald gGmbH
City
Greifswald
ZIP/Postal Code
17491
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Thomas Platz, Prof. Dr.
Phone
03834/871201
Email
Sekretariataed@bdh-klinikgreifswald.de
Facility Name
Klinikum Christophsbad Göppingen
City
Göppingen
ZIP/Postal Code
73035
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Angelika Kartmann
Phone
07161/6019650
Email
angelika.kartmann@christophsbad.de
Facility Name
Kliniken Schmieder Heidelberg
City
Heidelberg
ZIP/Postal Code
69117
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Desirée Kämpfer
Phone
06221/6540390
Email
d.kaempfer@kliniken-schmieder.de
Facility Name
Hospital zum Heiligen Geist Kempen
City
Kempen
ZIP/Postal Code
47906
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Nathalie Stute
Phone
02512/1421311
Email
nathalie.stute@artemed.de
Facility Name
Tagesklinik MPI Leipzig
City
Leipzig
ZIP/Postal Code
04103
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Frank Regenbrecht
Phone
0341/9724980
Email
frank.regenbrecht@medizin.uni-leipzig.de
Facility Name
Logo Zentrum Lindlar
City
Lindlar
ZIP/Postal Code
51789
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Tina Keck
Phone
02266/9060
Email
tina.keck@logozentrumlindlar.de
Facility Name
TheraVent aktiv Marbach
City
Marbach
ZIP/Postal Code
71672
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Katrin Baumann
Phone
07144/160960
Email
katrin.baumann@theravent-aktiv.de
Facility Name
St. Mauritius Therapieklinik
City
Meerbusch
ZIP/Postal Code
40670
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Stefanie Brühl, PD Dr.
Phone
02159/6795216
Email
stefanie.bruehl@stmtk.de
Facility Name
Aphasie-Zentrum Vechta gGmbH
City
Vechta
ZIP/Postal Code
49377
Country
Germany
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Stephan Benhamza
Phone
04447/970134
First Name & Middle Initial & Last Name & Degree
Kathrin Billo
Phone
04447/970134
Email
kathrin.billo@aphasie-zentrum.de

12. IPD Sharing Statement

Plan to Share IPD
No
Citations:
PubMed Identifier
31695667
Citation
Stahl B, Darkow R, von Podewils V, Meinzer M, Grittner U, Reinhold T, Grewe T, Breitenstein C, Floel A. Transcranial Direct Current Stimulation to Enhance Training Effectiveness in Chronic Post-Stroke Aphasia: A Randomized Controlled Trial Protocol. Front Neurol. 2019 Oct 22;10:1089. doi: 10.3389/fneur.2019.01089. eCollection 2019.
Results Reference
derived

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Transcranial Direct Current Stimulation to Enhance Training Effectiveness in Chronic Post-Stroke Aphasia

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