Final answer:
The indications for intraop EEG include beta, alpha, theta, and delta waves.
Step-by-step explanation:
The indications for intraop EEG include the following brain wave patterns: beta, alpha, theta, and delta. Beta waves are characteristic of wakefulness, with a frequency of 13-30 Hz. Alpha waves are seen in the early part of NREM stage 1 sleep, with a frequency of 8-12 Hz. Theta waves increase as an individual continues through stage 1 sleep, with a frequency of 4-7 Hz. Delta waves are characteristic of stage 3 NREM sleep, with a frequency of less than 3 Hz.