The bus rumbled along, the city lights a blurry streak outside the window. Sarah closed her eyes, trying to block out the noise, but then the familiar opening chords flooded her ears. It was a cover, a surprisingly good one, of the song she wrote when she was heartbroken and living in the city. Her fingers flexed, remembering the calluses from playing guitar. A smile played on her lips. She could almost taste the rain-soaked concrete of that city, smell the exhaust fumes, feel the grit under her nails. The feeling was as sharp as a newly sharpened blade.

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