Investigating effect of brain stimulation on dyslexia

The effectiveness of Transcranial Direct Current Stimulation (tDCS) on the reading skills of children with dyslexia

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20180522039775N2

Enrollment

Registered

2024-03-25

Start date

2024-04-09

Completion date

Unknown

Last updated

2024-05-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dyslexia. Dyslexia and other symbolic dysfunctions, not elsewhere classified

Interventions

Intervention 1: Intervention group: Direct current (1 mA, 20 min, for six days a week, two weeks) will transferr by a saline-soaked (0.9% NaCl) pair of surface sponge electrodes (size 5 cm x 5cm = 25c

cathodal electrode over the midway between P8 and TP8). Direct current will deliver by a battery-driven stimulator (DC-Stimulator-Plus, NeuroConn GmbH, Ilmenau, Germany) approved for usage in humans.

Eligibility

Sex/Gender

All

Age

9 Years to 12 Years

Inclusion criteria

Inclusion criteria: Have normal IQ (between 85 and 110). Being right-handed. Presence of dyslexia diagnostic criteria based on DSM-V criteria Utilizing Persian as the mother tongue (Persian native speakers) Filling out the informed consent form by the parent Age range from 9 to 12 years

Exclusion criteria

Exclusion criteria: Concurrent neurological illness Comorbidity with other psychiatric disorders Active physical disorders Wearing a cardiac pacemaker and metal parts in the head Presence of sensory-motor disorders Presence of epilepsy Receiving other treatments at the same time

Design outcomes

Primary

Measure	Time frame
Word reading (High frequency, low frequency). Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Reading and Dyslexia Test (NEMA).;Reading errors. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Assessment of Persian Reading Ability–Level 1 (APRA).;Non-word reading. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Non-word reading test.;Irregular word reading. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Irregular word reading test.	—

Measure

Time frame

Word reading (High frequency, low frequency). Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Reading and Dyslexia Test (NEMA).;Reading errors. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Assessment of Persian Reading Ability–Level 1 (APRA).;Non-word reading. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Non-word reading test.;Irregular word reading. Timepoint: Baseline, end of the final treatment session, one month later (follow up). Method of measurement: Irregular word reading test.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactMehdi Rezaei

The University of Birjand

mehdi.rezaei15@birjand.ac.ir+98 21 5675 9071

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026