Which of the following is not a typical number of naps taken during an MSLT?

In the context of a Multiple Sleep Latency Test (MSLT), which is conducted to assess daytime sleepiness and diagnose conditions such as narcolepsy, the typical protocol involves a specific number of naps in a controlled setting. The standard test usually consists of five nap opportunities provided throughout the day, with each nap spaced two hours apart. This structure allows for a comprehensive assessment of a person's ability to fall asleep in a laboratory environment.

Having two naps would not be sufficient for gathering the data necessary for an accurate diagnosis or assessment, as the limited opportunity may not fully capture a person's sleep latency patterns and overall sleep propensity. Thus, five naps are standard to determine the average latency to sleep across multiple opportunities, making the presence of two naps an atypical scenario for this testing protocol.