The scent of stale pizza and unwashed laundry clung to the air of Leo’s apartment. He usually didn't mind the smell, but today it was particularly grating, each whiff stirring up a peculiar ache. His roommate, Finn, bounced around the living room, excitedly planning a trip to the local animal shelter. “Imagine, Leo, a little fluffy friend to keep us company!"

Leo, slumped on the sofa, closed his eyes. He pictured his childhood home, the sound of his grandfather’s laughter echoing through the halls, and the playful yips of Buster, their Jack Russell terrier, chasing after his favorite squeaky toy. He could almost feel the rough fur against his cheek.

He opened his eyes, the memory fading. The present seemed so… empty. “I don’t know, Finn,” he said, his voice flat. “I just… I don’t think I’m ready for that kind of commitment.” He ran a hand through his hair, the familiar gesture doing little to soothe the unsettling feeling that had washed over him.

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