The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with respect to an eye, and a holographic viewing device that incorporates it. The system is of a type where communications between a user terminal and a gateway occur using an uplink band of frequencies between the user terminal to at least one satellite and in a downlink band of frequencies between the at least one satellite and the user terminal. The tape has a cut line extending from an end of the shorter side to near the non-adherent or weakly adherent portion. The lock mechanism comprises horizontal position fixing means for fixing the rear frame in the horizontal position. In addition to identifying and outputting representations of language objects that are stored in the memory and that correspond with a text input, the device is able to employ contextual data in certain circumstances to prioritize output and to learn new contextual data. The lead assembly can achieve more effective localization of electrical stimulation to very small brain targets, and thereby reduce the incidence of material side effects caused by collateral stimulation of brain tissue adjoining a desired brain target.