The email from Sarah, advertising a karaoke night, gleamed on the screen. Below it, a text from Mark: "Pool party at my place! Bring your swimsuits!" A dull ache resonated in Ethan's chest as he stared at the conflicting invitations. He swiveled in his desk chair, the plastic creaking under his weight.

He looked around his apartment, at the meticulously organized bookshelves and the sterile white walls. He remembered Mark's chaotic, colourful living room, the smell of chlorine and sunscreen, the carefree abandon of summer days spent splashing in the pool. He'd always been the quiet one, the observer.

He imagined Sarah, belting out off-key renditions of 80s pop anthems, something he had always secretly loved. He found himself imagining a time when those days wouldn't seem so far away. He picked up his guitar. The strings felt cold. He hadn't played in ages.

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