UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000061736
Receipt number R000070624
Scientific Title Effects of low-frequency transcranial alternating current stimulation on motor learning and brain activity
Date of disclosure of the study information 2026/06/01
Last modified on 2026/05/29 15:00:24

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Basic information

Public title

Effects of low-frequency weak electrical brain stimulation on motor skill improvement and brain activity

Acronym

Effects of low-frequency brain stimulation on motor learning and brain activity

Scientific Title

Effects of low-frequency transcranial alternating current stimulation on motor learning and brain activity

Scientific Title:Acronym

Effects of low-frequency tACS on motor learning and brain activity

Region

Japan


Condition

Condition

Healthy adults

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The aim of this study is to clarify the effects of low-frequency transcranial alternating current stimulation (tACS) on finger dexterity and reaction performance. In addition, neural mechanisms underlying the effects of brain stimulation will be investigated by assessing changes in brain activity using functional magnetic resonance imaging (fMRI), electroencephalography (EEG), and transcranial magnetic stimulation (TMS).

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Finger dexterity task performance, reaction task performance, fMRI data, EEG data, and motor evoked potential (MEP) data before and after brain stimulation.

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Cross-over

Randomization

Randomized

Randomization unit

Individual

Blinding

Single blind -investigator(s) and assessor(s) are blinded

Control

Placebo

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

5

Purpose of intervention

Educational,Counseling,Training

Type of intervention

Device,equipment

Interventions/Control_1

M1-tACS group

Interventions/Control_2

Cerebellum-tACS group

Interventions/Control_3

Motor-related areas-tACS group

Interventions/Control_4

DLPFC-tACS group

Interventions/Control_5

sham group

Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

18 years-old <=

Age-upper limit

30 years-old >=

Gender

Male and Female

Key inclusion criteria

Healthy adults, primarily undergraduate and graduate students at our university, who voluntarily expressed their willingness to participate after receiving an explanation of the study from the principal investigator.

Key exclusion criteria

Individuals with neurological or psychiatric disorders
Individuals with metal implants or electronic devices such as pacemakers in the body
Individuals taking neuroactive medications
Individuals with claustrophobia related to fMRI measurements
Pregnant individuals

Target sample size

80


Research contact person

Name of lead principal investigator

1st name Shota
Middle name
Last name Miyaguchi

Organization

Niigata university of health and welfare

Division name

Department of Physical Therapy

Zip code

950-3198

Address

1398 Shimami-cho, Kita-ku, Niigata City, Japan

TEL

025-257-4695

Email

miyaguchi@nuhw.ac.jp


Public contact

Name of contact person

1st name Shota
Middle name
Last name Miyaguchi

Organization

Niigata university of health and welfare

Division name

Department of Physical Therapy

Zip code

950-3198

Address

1398 Shimami-cho, Kita-ku, Niigata City, Japan

TEL

025-257-4695

Homepage URL


Email

miyaguchi@nuhw.ac.jp


Sponsor or person

Institute

Niigata university of health and welfare

Institute

Department

Personal name



Funding Source

Organization

Ministry of Education, Culture, Sports, Science and Technology

Organization

Division

Category of Funding Organization

Japanese Governmental office

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Niigata University of Health and Welfare Research Ethics Committee

Address

1398 Shimami-cho, Kita-ku, Niigata City, Japan

Tel

025-257-4455

Email

rinri@nuhw.ac.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 06 Month 01 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2026 Year 06 Month 01 Day

Date of IRB


Anticipated trial start date

2026 Year 07 Month 01 Day

Last follow-up date

2031 Year 03 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2026 Year 05 Month 29 Day

Last modified on

2026 Year 05 Month 29 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070624