The effects of transcranial current stimulation over the right fronto and parietal on memory

Effects of transcranial alternating current stimulation over the right fronto-parietal network on working memory performance - The Effects of tACS on the Frontoparietal Network on Working Memory

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000059445

Enrollment

Registered

2025-10-17

Start date

2025-11-20

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Healthy adults

Interventions

Theta-band (5 Hz) transcranial alternating current stimulation (tACS) over the right fronto-parietal network Gamma-band (40 Hz) transcranial alternating current stimulation (tACS) over the right fro

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Native Japanese speaker 2.Non-smokers 3. Right-handed healthy adults 4. Normal or corrected vision 5. No history of neurological trauma or mental disorder

Exclusion criteria

Exclusion criteria: 1. History of previous head injury 2. Metal implants in the head 3. History of epileptic seizures 4. History of psychotropic drug use 5. Depressive tendencies (self-rated depression scale of 45 points or more)

Design outcomes

Primary

Measure	Time frame
Working memory performance will be evaluated before and immediately after theta-, gamma-, and sham-transcranial alternating current stimulation (tACS) over the right fronto-parietal network. The interval between each experimental condition will be at least five days. Outcome measures: n-back task performance 1. Reaction time for correct responses 2. Accuracy rate 3. d-prime score	—

Secondary

Measure	Time frame
To evaluate adverse effects or discomfort related to tACS, a questionnaire on side effects will be administered three times: immediately after the start of stimulation, 5 minutes after the start, and immediately after the end of stimulation. The questionnaire items are based on the "Guidelines for the Safety of Low-Intensity Transcranial Electrical Stimulation (2019 Edition)" (Japanese Society of Clinical Neurophysiology, Subcommittee on Brain Stimulation Methods, 2021).	—

Measure

Time frame

To evaluate adverse effects or discomfort related to tACS, a questionnaire on side effects will be administered three times: immediately after the start of stimulation, 5 minutes after the start, and immediately after the end of stimulation. The questionnaire items are based on the "Guidelines for the Safety of Low-Intensity Transcranial Electrical Stimulation (2019 Edition)" (Japanese Society of Clinical Neurophysiology, Subcommittee on Brain Stimulation Methods, 2021).

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Countries

Japan

Contacts

Public ContactTomonori Nomura

Niigata University of Health and Welfare Department of Occupational Therapy

nomura@nuhw.ac.jp0252574554

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026