He held the wrong file, the hospital's error. But as he looked at the details of the other patient’s life, a strange feeling bubbled up within him. It reminded him of a time when the world was new and full of possibility, the way he felt when he was in school.

He had built a life, a career, a reputation. But now, looking at the other man's interests, the music he listened to, his childhood dreams, he felt a sharp sense of something that had been lost, something left behind. The taste of his mother’s cooking, the sound of her laughter, seemed to echo in his mind.

The file felt like a heavy weight in his hands, a reminder of the passage of time. He closed his eyes, the memory of his childhood home, bright and vivid, filling his mind.

Emotion: nostalgic

Cluster: Nostalgia / Reflection
PC1 (Valence): 1.00 Positive
PC2 (Disposition): -1.93

Role in Research

This story is one of 1,000 stories generated for the emotion nostalgic. During extraction, it was fed through Gemma4-31B and its hidden state activations were captured at 11 layers.

The mean activation across all 1,000 nostalgic stories, after denoising with neutral dialogue baselines, produces the nostalgic emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the nostalgic vector is projected through the unembedding matrix.

Promoted:
H0.677
L0.647
시절0.611
nostalgic0.609
fondly0.609
Suppressed:
--0.564
either-0.525
or-0.497
-0.487
l-0.449