The term rapid eye movement sleep is identified in base64 scheme by the sequence cmFwaWQgZXllIG1vdmVtZW50IHNsZWVw, while the MD5 signature is equal to 13ea5a63e7dbf4a2530918f32efa808c. The ASCII encoding of rapid eye movement sleep in hexadecimal notation is 726170696420657965206d6f76656d656e7420736c656570.