He nearly missed it, a pale rectangle clinging to the inside of the mailbox door. Leo fished it out, squinting in the bright sunlight. No name, no sender, just a simple "Happy Birthday!" written in a playful, looping hand. A warmth spread through him, chasing away the chill he’d been carrying around for weeks.

He felt a pull towards the park, a sudden urge to run, a physical restlessness he hadn't known he possessed lately. He threw the card in his pocket, a sudden need to be outside, to be active.

Leo practically jogged back to his apartment, shed his work clothes, and pulled on his running shoes. He needed to *move*, to feel the wind in his face, to push his body. He slammed the door behind him and took off at a pace he hadn't managed in months.

Emotion: invigorated

Cluster: Positive / Joy
PC1 (Valence): 3.28 Positive
PC2 (Disposition): 0.00

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
!0.452
(!)0.439
πŸŽ‰0.434
invigor0.416
enthusi0.395
Suppressed:
😞-0.524
πŸ˜”-0.428
😒-0.404
πŸ˜₯-0.393
que-0.391