As the sequence begins, the individual is seen with a genuine smile, indicative of amusement or happiness. This is affirmed by the contraction of the muscles around the eyes, creating "crow's feet" or "laughter lines", which are hard to mimic and often suggest genuine joy. The posture is relaxed with a slight upward tilt of the chin, conveying confidence or comfort in the moment.

As time progresses, the intensity of the smile starts to wane. The crinkling around the eyes diminishes, and the mouth shifts to a more neutral stance. This transition suggests a fading of the initial amusement, and the person's gaze appears to move, possibly indicating a change in focus or thought.

Towards the end of the sequence, there's a marked change. The lips press together slightly, hinting at some internal tension or contemplation. The eyes seem more distant, often denoting deep thought or introspection. This shift might indicate a move from external engagement to more internal thoughts or feelings.

In terms of the emotions displayed versus the actual feelings, the initial happiness or amusement seems genuine, with no evident discrepancy between the internal emotion and the external expression. However, as the sequence progresses, while the residual smile and transition to neutrality still appear genuine, there's a hint of introspection or a change in internal emotion. By the end, even though the individual seems to aim for a neutral exterior, the subtle tension in the lips and distant look suggest deeper, more reflective emotions internally.

In summary, the sequence captures a transition from a moment of genuine amusement to a state of introspection or deep thought. The subject appears initially engaged with the environment but gradually turns inwards, hinting at a more layered and complex emotional journey.