The Effect of Transcranial Direct Stimulation on Cognitive Functions of Healthy Adults

The Effect Of Transcranial Direct Stimulation Applied To The Dorsolateral Prefrontal Cortex And Posterior Parietal Cortex İn Cognitive Function, Mood And Proprioception İn Healthy Adults

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04873804

Enrollment

Registered

2021-05-05

Start date

2019-10-10

Completion date

2020-06-10

Last updated

2021-05-05

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

Conditions

Cognitive Symptom, Healthy

Keywords

tDCS, Dorsolateral Prefrontal Cortex, Posterior Parietal Cortex, Cognitive Function

Brief summary

Background: Transcranial direct current stimulation(tDCS) has been used to improve cognitive functions in healthy young adults. Purpose: To investigate the effect of TDCS application on different cortex regions on cognitive function. Methods: Sixty individuals aged 18-30 were included in the study. The participants were randomly divided into the left dorsolateral prefrontal cortex (Left DLPFC Group)(n=20), the right posterior parietal cortex (Right PPC Group)(n=20), and the sham group (Sham Group)(n=20). tDCS was applied for 20 minutes on weekdays for 2 weeks. The participants were evaluated in terms of cognitive functions with Neuropsychometric Test Battery before and after treatment.

Interventions

OTHERTranscranial Direct Current Stimulation

The intervention protocols were applied using tDCS (Teknofil TESsaNova). All individuals received 2 mA of anodal tDCS for 2 weeks on weekdays. All applications were done in the form of 20-minute sessions.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

DIAGNOSTIC

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

18 Years to 30 Years

Healthy volunteers

Yes

Inclusion criteria

* being 18-30 years old

Exclusion criteria

* alcohol and substance addiction * previous mental illness * having mental and cognitive problems * a history of head trauma * having cardiovascular disease.

Design outcomes

Primary

Measure	Time frame	Description
Neuropsychiatric Test Battery	3 weeks	It is a test battery for getting detailed information about general cognitive status.
Beck Depression Scale	3 weeks	It measures the symptoms seen in depression such as emotional, cognitive and motivational. It includes 21 items determine a behavioral feature related to depression. Items are numbered from 0 to 3. The goal is to objectively break down the degree of symptoms. The total score of all answers is calculated as follows: 0 to 9 points: Minimally depressive symptoms 10 to 16 points: Mild depressive symptoms Between 17 and 29 points: Moderate depressive symptoms Between 30 and 63 points: Severe depressive symptoms

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026