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Neural stimulation represents a powerful technique for neural disordertreatment. This paper deals with optimization of coil design parameters to beused during stimulation for modulation of neuronal firing to achieve painrelief. Pain mechanism is briefly introduced and a hierarchical stimulationmodel from coil stimulation to neuronal firing is proposed. Electromagneticfield distribution for circular, figure of 8 and Magnetic resonance couplingfigure of 8 coils are analyzed with respect to the variation of stimulationparameters such as distance between coils, stimulation frequency, number ofturns and radius of coils. MRC figure of 8 coils were responsible for inducingthe maximum Electric field for same amount of driving current in coils.Variation of membrane potential, ion channel conductance and neuronal firingfrequency in a pyramidal neuronal model due to magnetic and acousticstimulation are studied. The frequency of neuronal firing for cortical neuronsis higher during pain state, compared to no pain state. Lowest neuronal firingfrequency 18 Hz was found for MRC figure of 8 coils, compared to 30 Hz forcircular coils. Therefore, MRC figure of 8 coils are most effective formodulation of neuronal firing, thereby achieving pain relief in comparison toother coils considered in this study

A hierarchical neural stimulation model for pain relief by variation of coil design parameters