Neuron Explorer

Qwen3-0.6B

word-start 't' fragment in split words

A neuron in layer 27 of Qwen3-0.6B. Its strongest snippets are very consistent: they mostly peak on the same token. It is featured, so it has steering outputs.

What this neuron does

This neuron lights up on the letter t when it begins the first piece of a longer word that has been split in two, such as the t in tenses or tics. When it was turned up, the model's text drifted into repeated, broken phrases, which doesn't show a clear theme.

Written by Claude from this neuron's activations and steering outputs. Confidence: medium. Think it is wrong? Flag it (opens a prefilled issue on GitHub).

Fires most on

The text windows where this neuron's activation was highest. Amber marks positive activation; the outlined token is the peak. Hover a token for its strength.

  1. #1 peak

    the active verb) + Past Participle Example: A letter was written.⏎VERB TO BE - Verb to be in the passiveVerb to be in different tenses am-is-are +past participlePresent simple (am-is- are

  2. #2 peak

    tense cohesiveness is important. However, understanding the different types of tense can make you, well, tense.⏎At the most fundamental level, there are three tenses: past tense, present tense and future tense. Each of these tenses

  3. #3 peak

    transmit or reflect; "a white color is made up of many different wavelengths of light"⏎tinge, undertone - a pale or subdued color⏎4. tincture - (pharmacology) a medicine consisting of an extract in an

  4. #4 peak

    especially about the personal or private affairs of others; the act is also known as dishing or tattling.⏎Gossip is a topic of research in evolutionary psychology, which has

  5. #5 peak

    blinking the eyes or shrugging the shoulders. Simple tics can also involve vocalizations, such as grunting or clearing the throat repeatedly.⏎Additional examples of simple tics that may occur in Tourette syndrome include:⏎- Opening the mouth⏎-

  6. #6 peak

    the side.⏎Some individuals who experience Tourette’s may engage in complex motor tics that involve some form of self-harm, such as hitting oneself. Complex tics can also involve actions such as touching items, hopping or tapping the feet.

Steering

Push this neuron up or down while the model writes, and watch what changes. The outputs were generated ahead of time, so nothing runs in your browser.

turned down a lot
Prompt

Here is something I have been thinking about lately: why mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics mathematics

Most negative on

Where the activation went furthest below zero. Blue marks negative activation. Many neurons mean something different in each direction.

  1. #1 peak

    region of Kenya (January, 2009), a German canton of Switzerland (March, 2009), and the Piemonte-Toscana region of northern/central Italy (images only, February-March,

  2. #2 peak

    first harvest and gathering as neighbors to give thanks.⏎As often happens when our children are home for the holidays, a vigorous discussion about truth, liberty, and sometimes-tumultuous American history ensued. But it got me thinking about the origin of

  3. #3 peak

    while pursuing social policies geared towards economic recovery. David Cameron, Prime Minister of the UK, was elected in 2010 on the promise of a “tory miracle”. He promised a “country that leaves the European Union” will emerge

  4. #4 peak

    ), strengthen the dorso-lumbar area and the abdominal strap.⏎STRENGTHEN YOUR JOINTS⏎It mobilizes and activates all the joints (tendons and ligaments) and the muscles around<|endoftext|>Log In

Connections

Show on map

Which neurons in earlier layers feed this one, and which later ones it feeds. Amber links excite, blue links suppress; longer bars are stronger.

Fed by earlier layers

  1. L22:316 strongly excites
  2. L21:1112 suppresses
  3. L18:137 suppresses 'the' after 'to' in fixed phrases
  4. L24:1220 excites
  5. L17:166 excites
  6. L20:164 excites
  7. L19:529 excites
  8. L2:1585 excites
  9. L0:246 excites
  10. L19:643 suppresses
  11. L7:219 excites
  12. L16:76 excites
  13. L10:445 excites
  14. L17:399 suppresses
  15. L20:1040 suppresses
  16. L20:838 weakly excites
  17. L4:613 weakly excites
  18. L7:674 weakly suppresses
  19. L21:298 weakly excites
  20. L10:19 weakly suppresses
  21. L23:1427 weakly suppresses
  22. L16:1066 weakly excites
  23. L10:393 weakly suppresses signs and constants in equations
  24. L21:181 weakly excites

Feeds later layers

None: this is the last layer.

Activation histogram

How often this neuron fires at each strength. Almost always it does close to nothing (the tall bars in the middle); the snippets above are the rare moments it fired hard, amber for positive and blue for negative.

1 values between -12.88 and -12.271 values between -11.04 and -10.431 values between -7.36 and -6.741 values between -4.90 and -4.291 values between -4.29 and -3.682 values between -1.83 and -1.2218 values between -1.22 and -0.612384 values between -0.61 and 0.011473 values between 0.01 and 0.6219 values between 0.62 and 1.241 values between 1.24 and 1.851 values between 1.85 and 2.461 values between 2.46 and 3.081 values between 3.69 and 4.311 values between 5.53 and 6.151 values between 6.76 and 7.381 values between 11.06 and 11.67offnegativepositiveoften

Logit lens

The words this neuron nudges the model toward (amber) or away from (blue) when it fires. A hint, not a label: many neurons work through later layers instead.

Promotes

  1. 望去
  2. 女人
  3. олод
  4. естеств
  5. 永久
  6. UNITY
  7. Frauen
  8. longest
  9. itere
  10. ierarchy

Suppresses

  1. ween
  2. alent
  3. erm
  4. oproject
  5. oph
  6. 实践活动
  7. wen
  8. 在这里
  9. uples
  10. oby