Methods and compositions to controllably regulate cells at a target site. At least two different versions of a file recorded on the storage medium are presented to a user via a graphical user interface, where the at least two different versions of the file are identified from at least two different indexes recorded on the storage medium. In drive mode, the pull-up network is configured to produce a calibrated drive impedance when an \u201con\u201d output is to be generated, and the pull-up network is configured to produce a calibrated drive impedance when an \u201coff\u201d output is to be generated. In another embodiment, the sodium hypochlorite solution contains about 0. Recording test is performed only to an area smaller than or equal to 1N of the test area of each layer and any other area is always unrecorded. Corresponding neurons in the first neural module and the second neural module communicate via the synapses.