A wave of emptiness washed over Mark. He clutched the phone, the cold metal a poor substitute for the warmth he’d expected. The surprise party, a beacon of light in his otherwise routine week, was off. A single line in a group text had done it. He felt… hollow.

He drifted through his apartment, each room a repository of bygone times. He ran a hand over the worn leather of his grandfather’s armchair, the scent of pipe tobacco lingering faintly in the fabric. He recalled his grandfather telling him stories of his youth. The world seemed a lot less complicated back then.

He paused in front of a photo album, the faded photographs like precious relics. He flipped through the pages, his fingers lingering on images of carefree days. He chuckled softly, remembering a particularly embarrassing moment from his teenage years.

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