The sound of rain against the windowpane felt… intimate. He felt a deep ache that seemed to reside in his bones. He leaned back in his worn armchair, the fabric worn smooth from years of use. Across the room, Mia, his roommate, tapped furiously on her laptop, a look of focused determination on her face. "A hamster, Ben! They're so cute and low-maintenance!"

He closed his eyes, his mind replaying his childhood home, the cozy warmth of his mother’s smile, and the playful antics of a small, fluffy hamster named Nibbles. He felt a phantom weight in his lap, the memory of Nibbles' tiny body snuggled close.

He sighed. He didn't want a hamster. He wanted… something else. Something he couldn't quite name. “I… I don’t think so, Mia,” he said, his voice quiet, almost lost in the rhythmic drumming of the rain.

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