Replica resembles a rabbit head, and is black in color. It has two white slits for eyes and a thin purple line of light across its body resembling a mouth. It also has two appendices on the top of its body which resemble rabbit ears, and two other, foot-like appendices on the underside of its body, which seem to serve as a landing support, but were never seen in use, as Replica is always floating or flying.
3. any point of entering or beginning: the threshold of a new career. 4. Also called limen. the point at which a stimulus is of sufficient intensity to begin to produce an effect: the threshold of consciousness; a low threshold of pain.
Sensory Thresholds. Sensory Thresholds. The nervous system receives input through an array of sense organs (for example, the eye, ear, or nose) and transforms the information into neural processes through a procedure called sensation.