Investigation of non-invasive brain stimulation and its associated placebo effects on visual memory

Evidence and sources of placebo effects in transcranial direct current stimulation during visuospatial working memory training

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN86769535

Enrollment

120

Registered

2023-02-10

Start date

2019-03-03

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

Modifications in working memory performance in young non-disabled adults Not Applicable

Interventions

Participants will be randomly assigned by simple randomization with stratification to one of three groups (arms): an anodal tDCS group, a sham tDCS group and a no-tDCS control group. There is one with

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. At least 18 years old 2. Right-handed 3. Passed the screening questionnaire for tDCS studies (Thair, Holloway, Newport, & Smith, 2017)

Exclusion criteria

Exclusion criteria: 1. Mixed-handed or ambidextrous 2. Report any diagnosed current psychiatric condition, such as clinical depression or bipolar disorder

Design outcomes

Primary

Measure	Time frame
Visual memory performance is measured using the Corsi Block Tapping Task which is recorded once during the experiment	—

Secondary

Measure	Time frame
Placebo effects related to non-invasive brain stimulation recorded from an 8-point Likert scale are recorded pre- and post-visual memory practice during a single lab visit	—

Countries

United States of America

Outcome results

None listed

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