Transcranial direct current stimulation (tDCS) is a form of neurostimulation which uses constant, low current delivered to the brain area of interest via electrodes on the scalp. It was originally developed to help patients with brain injuries or psychiatric conditions like major depressive disorder. It is indicated in cognitive enhancement in healthy people, memory deficits in Parkinsons disease and Alzheimers disease, schizophrenia, pain and for improving upper limb function after stroke. Transcranial direct current stimulation devices in the market have an anode, a cathode and a battery with controls. They are usually costly and not affordable to Indian Population. Following is the diagrammatic illustration of my tDCS Device. The Black colored Carbon electrodes of the size of 2 by 1 inch are attached from inside of the thermocol helmet. The electrodes are covered by sponges which are soaked with Nacl solution before use. The electrodes are detachable and can be placed anywhere inside the helmet. The electrodes are connected to a DC power supply of 3-9 volts and one ampere eliminator. The maximum current that flows through electrodes is less than 2 Milliamperes. The Themocol helmet is worn by the person who wants to take tDCS.
