The hum of the espresso machine filled the small cafe, a familiar sound that usually comforted Ethan. Today, however, it only seemed to amplify the internal noise in his head. He was scrolling through his email when the message showed up. A recommendation for a therapist. He recognised the name.

It was Gary Thornton. He had no clue Gary had a doctorate and was trying to help people. The memory of Gary’s sneering face swam before his eyes. A profound sadness settled in his chest. He took a sip of the bitter coffee, a sensation of something sweet and sour washing over him.

He wondered if Gary still remembered the time he stole his bike.

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