The TDCS device is a device related to neurotherapy.... Neurotherapy is actually a method of treatment through nerves or nerve cells.... This device is used these days to treat various diseases in many advanced countries.... This device can be used even on healthy people, and with its help, many physical-brain problems can be treated, and even this method can be considered an effective choice in the field of improving brain function.... This device is powered by batteries and electric current It transmits a constant through wires to two sensors or electrodes.... These electrodes are inside a spongy cloth.. It can moisten its brain solution with saline solution and thus direct its saline solution.. The task, and depending on the type of disease and the type of treatment, it is determined where these electrodes are placed.. Migraine and.... This device is also very efficient.... Depending on the selected treatment program, this device turns off automatically at the set time and informs the therapist about this with an alarm... The time to use this device is between 10 and 30 minutes, and this time depends on the type of possible electrical stimulation... from the brain with the TDCS method... But various experiments conducted on animals and humans show some things in this field... Actually, the electrodes enter the brain through the anode, and finally, the electricity through the cathode from The brain exits.... So under the stimulating cathode, a negative charge is created during the accumulation of electrons to enter the electrodes.... In this context, the dimensions of the stimulating electrodes are smaller for capable electrodes.. More focal charge transfer to the desired area in the brain... In fact, the time of more charge accumulation at the exit door of the damaged area of the brain can be changed or controlled by changing the size of the cathode electrode or by changing the size or location of the anodic electrode... In any case, the brain is much more complex than it can be He clearly described the events inside it. In general, the therapist determines the following depending on the type of illness of the person and depending on the conditions: ### 1.... current intensity It is natural that for this method to be more effective, the amount of electric current must be increased... the current is transferred from the anode or negative electrode to the cathode or positive electrode... ### 2... The shape and size of the electrode Another factor that changes the efficiency of this method is the shape and size of the electrodes.. This factor can be considered much more important than the intensity of the current.. The amount of current passing through each square centimeter is calculated in terms of density or current density.. Normally, a density of 0.029 to 0.08 mA is used according to the size of the electrode.. It is considered very important and decisive.... In most studies, electrodes of 25 to 35 square centimeters m is used .... for Establishing a proper connection between the two electrodes and the skull, the electrodes are moistened with normal water or NaCl solution or special creams.... In the meantime, some electrodes do not need additional materials for connection... ### 3.... Placement of electrodes The size used and the technical principles of TDCS make it impossible to count on its spatial accuracy... but it has a regional effect in the right or left motor cortex or the right or left prefrontal cortex. In the conducted research, the anode electrode increases the activity of the surface areas of the cerebral cortex and the cathode electrode decreases it. The longer the duration of the current period or the intensity of the current, the more results are observed in TDCS... But due to the expansion of the range of the affected areas due to the increase in the intensity of the current and the stimulation of the neurons of the underlying layers, as well as causing uncontrollable effects, the evaluation is usually done to increase the duration of brain stimulation more effectively. 1... First, 2 electrodes with positive and negative poles are placed on the head using a type of sponge pad moistened with a conductive solution... 2... These electrodes pass their internal current through different areas such as the scalp, skull, etc. and finally reach the cerebral cortex... This causes calcium to increase cell activity and increases cell activity. and oxygen in that area and restores the brain.. In fact, this action increases the function in that area due to the connection between damaged cells and healthy cells and causes rehabilitation, restoration and recovery.

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