Transcranial Direct Current Stimulation
Also written as: tDCS — Transcranial Direct Current Stimulation
A non-invasive brain stimulation technique that applies weak electrical currents to modulate neuronal activity.
Full Definition
Transcranial Direct Current Stimulation (tDCS) is a form of non-invasive neuromodulation that delivers low-intensity direct current through electrodes placed on the scalp. Unlike pulsed stimulation methods, tDCS applies constant current to alter neuronal excitability and firing rates. The technique is used in both therapeutic applications for conditions like depression and chronic pain, and in research settings to study brain function. Duration of stimulation sessions typically ranges from 10-30 minutes, with current intensities between 1-2 milliamperes.
Usage
Usage note: Always capitalize when spelling out the full term; lowercase 'tDCS' is acceptable in subsequent references.
In Context
- "The tDCS protocol specified anodal stimulation over the primary motor cortex for 20 minutes at 1.5 mA." — Clinical trial protocol
- "Contraindications for transcranial direct current stimulation include active seizure disorders and metallic cranial implants." — Patient safety guidelines