When we enter this stage of sleep, our brain waves change to theta waves.

Question

BlackTom AI · Accepted Answer

To tackle this question, we’ll evaluate what brain wave patterns correspond to each sleep stage.
Option 1: Stage 2 — This stage is characterized by features such as sleep spindles and K-complexes, not theta-dominated activity, so this choice does not match the described brain wave pattern.
Option 2: Stage 1 — This early sleep stage features a shift to theta waves from the previous wakeful beta/alpha activity, marking the transition into sleep. The description given matches Stage 1, where theta activity becomes prominent.
Option 3: Stage 3 — Stage 3 involves slower delta waves (deep sleep, slow-wave sleep), which is a different pattern from theta waves, so this option is incorrect for the stated brain wave change.
Option 4: Stage 4 — This stage is also dominated by delta waves and represents the deepest non-REM sleep; theta waves are not the defining feature here, making this choice inaccurate for the described change.
In summary, the statement about brain waves changing to theta waves corresponds to the transition into Stage 1, as theta activity marks that initial phase of sleep.

When we enter this stage of sleep, our brain waves change to theta waves.

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