A sensing circuit includes a sense amplifier circuit having a first and second nodes through which a magnetic memory element is sensed. A two-dimensional representation of a navigation funnel is displayed. The nanomaterial electrodes may also be grown in situ. The devices, systems, and methods encourage clitoral engorgement using suction over the clitoris combined with vibratory stimulation. check the delayed conduction angle of the voltage waveform; D. In this method, querying is performed by directly using a GPU process, thereby omitting a process of repeatedly copying partitioned data from a memory in the prior art, shortening query time, and improving query efficiency.