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SESK: Stuff Everyone Should Know · sesk.info/ai-cnn-local-receptive-field

In a CNN, what does a neuron's receptive field describe?

It is the local input region connected to that neuron.

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  1. The optimizer's memory
  2. The number of classes
  3. Its local input region ✔

Why: Convolutional neurons connect locally across image width and height. The receptive field specifies the spatial region that can influence one neuron.

Huh, didn't know that: A convolutional filter normally spans the full channel depth, such as all three RGB channels.

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The convolutional neuron kept its views local.
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References

Answer: Its local input region. Convolutional neurons connect locally across image width and height. The receptive field specifies the spatial region that can influence one neuron.

  1. Stanford CS231n: Convolutional Networks cs231n.github.io/convolutional-networks
    The spatial extent of this connectivity is a hyperparameter called the receptive field of the neuron
    Checked 2026-10-10.

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