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Sigma KEE - Scratching
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Scratching
Scratching is a rhythmic rubbing of the body with a sharp object or other part of the body, such as a claw or nail. During a scratch reflex, a nearby limb reaches toward and rubs against the site on the body surface that has been stimulated. Despite decades of research, key aspects of the scratch reflex are still unknown, such as the neural mechanisms by which the reflex is terminated.[from Wikipedia]
Relationships      
Parents 身体运动 Any Motion where the agent is an Organism and the patient is a BodyPart.


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