Effects of Individual Differences in tDCS-Induced Current Direction within the Primary Somatosensory Cortex on Tactile Function

Effects of Individual Differences in tDCS-Induced Current Direction within the Primary Somatosensory Cortex on Tactile Function - The Effect of tDCS Current Direction on Tactile Function

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000061615

Enrollment

Registered

2026-05-18

Start date

2026-05-18

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Central nervous system disorders

Interventions

Transcranial Direct Current Stimulation Stimulation duration: 20 minutes

stimulation intensity: 2 mA

fade-in/fade-out: 15 seconds each

electrode size: 5 x 5 cm Conventional electrode placement conditions Transcranial Direct Current Stimulation Stimulation duration: 20 minutes

electrode size: 5 x 5 cm Current applied perpendicular to the gyri Transcranial Direct Current Stimulation Stimulation duration: 20 minutes

electrode size: 5 x 5 cm Condition: Current parallel to the gyri Transcranial Direct Current Stimulation Stimulation duration: first 30 seconds

fade-in and fade-out: 15 seconds each

electrode size: 5 x 5 cm Sham condition

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The inclusion criteria were right-handed, healthy adults aged 18 to 30 who were eligible for MRI and tDCS, had received a thorough explanation of the study, and had provided written informed consent.

Exclusion criteria

Exclusion criteria: Exclusion criteria included individuals with a history of neurological or psychiatric disorders, those with sensory impairments or upper limb dysfunction, those with contraindications for MRI or tDCS, those taking medications that affect neural excitability, and those deemed unable to complete the study.

Design outcomes

Primary

Measure	Time frame
Grating orientation task(Measured before and after the tDCS intervention)	—

Secondary

Measure	Time frame
Somatosensory Evoked Potential	—

Countries

Japan

Contacts

Public ContactYusuke Sekine

Niigata University of Health and Welfare Graduate School of Health and Welfare Sciences, Doctoral Program

hwd26011@nuhw.ac.jp025-257-4455

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026