Final answer:
The characteristic EEG pattern in Creutzfeldt-Jakob disease is Periodic high-amplitude sharp wave complexes.
Step-by-step explanation:
The characteristic electroencephalographic (EEG) pattern noted in Creutzfeldt-Jakob disease (CJD) is Periodic high-amplitude sharp wave complexes. These sharp wave complexes are also known as triphasic waves and are typically periodic with a repetition rate of 0.5 to 2 per second. The EEG appearance of CJD can be distinguished from other neurodegenerative diseases such as Alzheimer's or Huntington's by its rapid progression and these unique sharp wave complexes.