David leaned against the oak tree, its rough bark scratching against his back. In front of him, the time capsule, unearthed during a construction project. Inside, a handful of smooth, grey stones, a faded photograph of a dog, and a drawing of a house with a red roof.

He couldn't place it. He didn't recognise the house. The dog was a blur in his mind. But as he looked at the stones, he remembered a game he used to play. A feeling of lightness in his stomach. He remembered the feel of the wind in his hair.

He felt it all so vividly. He had a sudden urge to run, to go back, to find that red-roofed house and the dog.

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