In operant conditioning, neutral stimuli do not play such a direct role.

Eventually, the neutral stimulus alone can elicit the state of fear.

As a result, it is enough to show the neutral stimulus to get a response.

The once neutral stimulus is given again to see if the rat would show the responses of fear.

Each fish was then presented with a neutral stimulus of a light that went on 10 seconds before the net plunged into the water.

The conditioned response is the learned response to the previously neutral stimulus.

This neutral stimulus showed an orienting response, which indicated that the dog was paying attention.

During the experiments rats were given one taste, sight, sound as a neutral stimulus.

As a result, the formerly neutral stimulus elicits fear.

They can be produced experimentally by pairing a neutral stimulus with a known reward.