“This is crazy," Mark muttered, pacing his apartment. He was usually a pragmatic man, but the hospital’s error had thrown him. His records had been mistakenly switched. He felt a deep… pull towards his memories.

He stopped, staring at the photograph of his father on the mantelpiece. His father, a gruff but loving man, always knew how to make him laugh. He picked up the photo, tracing the lines on his father's face. He could almost hear his father's voice, full of warmth and encouragement.

He walked over to his piano. Dusting off the keys, he began to play a simple tune, a melody he’d learned as a child. The music filled the room, bringing with it a sense of… comfort. The music reminded him of those he'd loved and lost.

Emotion: sentimental

Cluster: Nostalgia / Reflection
PC1 (Valence): 0.89 Positive
PC2 (Disposition): -1.58

Role in Research

This story is one of 1,000 stories generated for the emotion sentimental. 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 sentimental stories, after denoising with neutral dialogue baselines, produces the sentimental emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the sentimental vector is projected through the unembedding matrix.

Promoted:
L0.677
fondly0.567
memories0.503
0.488
reminis0.466
Suppressed:
either-0.515
or-0.488
[]-0.473
--0.408
не-0.396