the 'B' in vitamin B

What this neuron does

This neuron lights up on the letter B when it comes right after the word 'vitamin', as in vitamin B12 or vitamin B1. When it was turned up, the model's writing did not show a clear change in topic.

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

   body to fight against serious disease.⏎Riboflavin (vitamin B-2), Niacin (vitamin B-3), Magnesium,

2. #2 peak

   .⏎Oats are one of the healthiest cereals on the planet. They are rich in healthy fiber, magnesium, manganese, thiamine (vitamin B1) and other important nutrients.⏎Protein content: 15% of

3. #3 peak

   flowers contain a volatile oil made of a variety of amino acids and other substances, including borneol, camphor, adenine, and small amounts of vitamin B1.⏎In traditional Chinese medicine, chrysanthemum has pungent

4. #4 peak

   from the outer layer of the wheat 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

5. #5 peak

   is a dairy product made from cultured milk with live bacteria.⏎Yogurt is a good source of calcium, phosphorous, riboflavin, and vitamin B12, among other nutrients.⏎With variations, yogurt is consumed all over the

6. #6 peak

   normal mean cell volume, despite quite severe iron deficiency and⏎thalassaemia trait. Her vitamin B12 was found to be 75 pmol/L. The following week

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.

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

   they catch as much sunlight as possible. Despite this, leaves come in many different shapes and sizes. The leaf of a plant has a blade, midrib and a vein.⏎- The blade is the flat part of the leaf, it

2. #2 peak

   3% recycled content. You may be living in a steel building that used to be your washing machine, refrigerator or car scraps.⏎The latest technologies in steel production promise

3. #3 peak

   Bible Battles take place in a relatively small area of the Levant (which, in

4. #4 peak

   with glycerin, in part because the corn grain and soybeans that used to be fed to livestock are now being used for biofuel production. This way, the

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

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.

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.