The musty smell of the basement was usually a deterrent, but today, Leo didn't even notice. He held his grandfather’s letter of resignation, dated before Leo was even born. It was filled with furious, heartfelt words of protest. His grandfather, a brilliant chemist, had felt stifled.

Leo felt a sudden surge of physical energy, his pulse quickening. His shoulders straightened, and he took a step forward. He’d been feeling leaden, stuck in a dull office job. The letter had ignited something within him. He'd been feeling that way for a long time.

He felt an impulse to get out, to be active. He walked towards the stairs, and he felt a grin slowly stretch across his face. He felt like he could run a marathon. He glanced at his own notes, written earlier in the day. He crumpled them in his hand.

Emotion: rejuvenated

Cluster: Positive / Joy
PC1 (Valence): 3.32 Positive
PC2 (Disposition): -0.82

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
la0.547
de0.526
newfound0.523
invigor0.495
rejuvenated0.495
Suppressed:
😞-0.485
😣-0.451
-0.434
worse-0.419
😥-0.385