Final answer:
Theta waves, prevalent in stage 1 of NREM sleep and characterized by a frequency of 4-7 Hz, are linked to memory performance and the emotional coordination between limbic and frontal brain regions.
Step-by-step explanation:
The pattern of electrical activity in the brain associated with memory performance and coordinating emotional information between the limbic areas and the frontal areas of the brain is the theta wave. Theta waves are lower in frequency (4-7 Hz) and higher in amplitude compared to alpha waves. These waves are dominant in stage 1 sleep and also in deeper stages of NREM sleep. Moreover, theta waves have been implicated in functions related to learning, memory, and emotional processing, as indicated by the involvement of areas such as the hippocampus and the amygdala, which are crucial for memory and emotion, respectively.