Development of a transcranial direct current stimulation (tDCS) device based on polarity interchangeable electrodes

Area of Science:

• Neuroscience
• Biomedical Engineering

Background:

• Transcranial direct current stimulation (tDCS) modulates cortical excitability using scalp electrodes.
• Current tDCS methods often involve short stimulation durations and cumbersome equipment with multiple patches and lead lines.
• Existing tDCS devices are not well-suited for extended or unsupervised use.

Purpose of the Study:

• To develop an improved tDCS device for long-term brain stimulation.
• To create a user-friendly tDCS system suitable for individuals without specialized training.
• To overcome the limitations of conventional tDCS devices in terms of setup and duration.

Main Methods:

• A novel tDCS device was engineered, featuring a simplified structure and eliminating the need for lead lines.
• The device facilitates polarity-swapping for direct current (DC) stimulation without manual repositioning of electrodes.
• Performance was validated through experimental testing.

Main Results:

• The developed tDCS device successfully achieved polarity-interchangeable DC stimulation.
• The experimental validation confirmed the device's functionality and performance.
• The design simplifies the application of tDCS, making it more accessible.

Conclusions:

• The new tDCS device supports long-term neuroelectric stimulation research.
• Its simplified, lead-free design enhances usability for extended applications.
• This innovation can facilitate broader research into tDCS applications.