The term refractory period is identified in base64 scheme by the sequence cmVmcmFjdG9yeSBwZXJpb2Q=, while the MD5 signature is equal to 6ad01f73ad2c5b00589d8a8c71a5cad8. The ASCII encoding of refractory period in hexadecimal notation is 726566726163746f727920706572696f64.