Aspects Of The TDCS Therapy

By Tammie Caldwell


The transcranial direct current stimulation refers to a process that involves the simulation of a brain area using some constant but low current. This form of neuron-stimulation involves the delivery of this current to the brain area using some electrodes that are carefully placed on a scalp. The procedure was initially developed to help treat patients diagnosed with brain injuries like strokes. As studies and research about the same have advanced, tDCS has been known to help increase cognitive person with relation to a variety of tasks.

The practice has also been used to enhance the attention span, mathematical abilities, memory loss, coordination, language and even problem solving. This depends with the location where the stimulation is intended to effect. The practice has been highly adapted in recent years as more people continue to learn of its merits. There are many studies that have been conducted to prove its safety and they have shown that it is safe for human use. This is however subject to proper maintenance of safety protocols.

The procedure involves simply passing some constant and direct flow of current through the neurons in the brains using some electrodes. The therapist places the electrodes on an area of interest with proper precision in order to attain successful results. The current passing through is intended to induce intracerebral activity.

The flow of a current used is manipulated to either increase or reduce the excitability of neurons at the specific area being targeted. This change in the excitability then alters brain function and thus becomes relevant for various therapies.

The process by which to successfully undertake this is relatively simple provided you have the right equipment and knowledge on how to carry it out. It needs only two electrodes which are the positively charged anode and the negatively charged cathode. Current is known to flow from the positive anode and then end up at the negatively charged cathode for a circuit to be complete. The current therefore flows through the conducting tissues which in this case are the brain neurons and creates an excitement in them as it passes.

The setting up involves properly preparing the skin where the electrodes will be placed. There need to be a strong connection between them and the skin for a successful procedure. The electrode pads are of different sizes and the smaller their size is, the more focused the stimulation they will deliver to the required point. One of the electrodes is placed at the point of interest while the other is placed in another point to ensure the circuit is complete.

The electrode to complete a circuit can be placed on the neck, shoulder or opposite side of the first electrode. Current is then let to flow through and can be increased gradually. After the process is started, current will flow for the set time and then turn off automatically.

Recent studies have shown that the effectiveness of this stimulation can be improved by the use of multiple electrodes. These gel electrodes are placed at more specific points unlike for the sponge ones. They in turn help to achieve better results.




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