The old carousel horse in the attic, its paint chipped and worn, caught the afternoon sun. It had once been his favourite. David stood amongst the dust motes and shadows, a letter clutched in his hand. He hadn't been in the attic for years. He took in the scent of aged wood and forgotten treasures. He needed to touch something, to feel something.

The letter's contents, a revelation of a half-sister, had upended his world. He remembered his childhood home, the games he’d played, the laughter he’d shared with his parents. Those feelings now felt tinged with something.

He sat on a dusty trunk, his back against the wall, a wave of weariness washing over him. The carousel horse seemed to mock him, the bright colours of its past now muted. He felt a desire to reclaim the innocence of his youth, a longing for something pure and simple.

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