the B in vitamin B names
A neuronOne of thousands of tiny dials inside each layer. It reads the text so far and produces a number, its activation, that nudges what the model writes next. in layerOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. 10 of Qwen3-0.6B. Its strongest snippets are very consistent: they mostly peak on the same token. It is featuredA neuron picked for the full treatment: steering outputs and a written explanation. About 3,000 of the 86,000 neurons are featured., so it has steering outputs.
What this neuron does
This neuron reacts to the letter B in vitamin names like 'vitamin B12', 'B6', or 'B2', especially right after the word 'vitamin'. Turning it up did not make the model's text focus on vitamins; its output wandered to unrelated topics.
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 activationThe number a neuron produces for a token. Large positive means it fired hard; negative means it pushed the other way. was highest. Amber marks positive activation; the outlined tokenA piece of text the model reads at once: often a word, sometimes part of a word or a punctuation mark. is the peak. Hover a token for its strength.
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level⏎of 52 pmol/L, whose mother had a level of 300 pmol/L. Understanding the clinical⏎manifestations of vitamin B12 deficiency and how it is relevant to Australia’s refugee⏎population might assist
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grain. The cereal has a rich content of protein, fiber, vitamins, minerals and phytonutrients. Vitamins include B1, B2, B3, B6 and E. Mineral content includes magnesium, manganese, zinc, calcium
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causes of memory loss⏎Some memory problems are related to health issues that may be treatable. For example, medication side effects, vitamin B12 deficiency, chronic alcoholism, tumors or infections in the brain, or
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12 is found in red meat, seafood, dairy products and eggs, and in fortified packaged cereals in developed countries.2 It is well established that vitamin B12 deficiency is a common problem in most of the developing world.3–
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cheese has a low fat and calorie content. It is full of calcium, phosphorus, selenium, vitamin B12, riboflavin (vitamin B2
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diets and the low vitamin B12 levels in this population.3⏎Vitamin B12 is one of the most complex vitamins. The measurement of serum levels and
SteeringAdding a push along a neuron while the model writes, to see how its output changes. Turning it up or down.
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.
Here is something I have been thinking about lately: if the world is a planet, and a planet can a lot of things, then we can sure to see the signs of our own species, and we are sure to seeing how the environment is changing. And the planet is changing, and
Most negative on
Where the activation went furthest below zero. Blue marks negative activation. Many neurons mean something different in each direction.
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. Ozbekhan.⏎Wicked problems were named⏎- There is no definitive formulation of a wicked problem⏎- Every wicked problem is essentially unique⏎- Wicked problems have no stopping rule – people stop because of a lack of money, time
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mice without the gene either die before birth, or do not reproduce symptoms found in patients.⏎So using a conventional genetic engineering tool, the researchers tried for years-literally-to knock out PIG-A in adult stem cells, without success. They then
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is caused by a lack of moisture in the outer layer of the skin. The outermost layer of the skin contains lipids. These lipids consist of ceramides, fatty acids and cholesterol that help to hold in water and prevent dryness
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the Census then by practically everyone else, themselves included.⏎Census-takers designated them Russian-born, and they were, literally.⏎Geographically they were as well, since they originated from at⏎least six
Connections
Show on mapWhich neuronsOne of thousands of tiny dials inside each layer. It reads the text so far and produces a number, its activation, that nudges what the model writes next. in earlier layersOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. feed this one, and which later ones it feeds. Amber links excite, blue links suppress; longer bars are stronger.
Fed by earlier layers
- L4:347 excites
- L1:4 excites
- L2:1774 excites
- L4:1319 excites the 'B' in vitamin B
- L2:1855 excites
- L1:134 suppresses
- L6:1357 excites
- L0:825 suppresses
- L7:2095 excites
- L1:846 suppresses
- L0:2783 suppresses
- L0:1108 suppresses
- L3:516 suppresses
- L5:143 suppresses
- L0:2459 excites
- L5:138 weakly excites
- L7:300 weakly excites
- L0:2231 weakly suppresses
- L8:2081 weakly suppresses
- L4:1722 weakly suppresses unclear: word fragments inside names
- L4:188 weakly excites
- L2:2106 weakly suppresses
- L5:499 weakly suppresses
- L5:1109 weakly suppresses
Feeds later layers
- L18:242 strongly suppresses
- L19:583 strongly suppresses
- L20:256 suppresses
- L18:385 suppresses
- L17:517 suppresses "but" in "not only X, but" phrases
- L18:1023 suppresses the digit 3 inside numbers
- L20:558 suppresses
- L19:1282 suppresses
- L18:541 excites
- L21:1582 suppresses
- L21:706 suppresses
- L20:600 suppresses
- L11:32 excites
- L19:370 excites
- L21:561 suppresses
- L11:66 suppresses
- L12:2503 weakly suppresses
- L20:1374 weakly suppresses
- L26:1953 weakly suppresses
- L18:666 weakly excites
- L19:2330 weakly suppresses
- L15:80 weakly excites
- L14:643 weakly excites
- L17:420 weakly suppresses
Activation histogramA chart of how often a neuron takes each activation value.
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.
Logit lensReading which output tokens a neuron pushes toward or away from, straight off its output weights, before the later layers have their say.
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 layersOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. instead.
Promotes
- leton
- �
- cigarette
- sup
- esta
- ystate
- sticky
- :text
- enburg
- sec
Suppresses
- Fatal
- 社会组织
- isms
- -quarters
- itizer
- 酱油
- 动力
- 溏
- skins
- 酝酿