Giesler提出一种理论认为，瘙痒感在STT神经元里面产生一种兴奋的状态，而搔痒可以抑制这种状态——好像是我们的手指给脊髓神经元发指令让它们冷静下来。
Giesler theorizes that the itch sensation creates an excited state in the STT neurons that scratching inhibits - as if our fingernails were sending a message to spinal-cord neurons to cool off.
查平说：“如果你想要机器人臂向左动，你就得找携带向左运动指令的那小撮神经元。”
"If you wanted to have a robot arm move left," Chapin explains, "you would have to find that small set of neurons that would carry the command to move to the left."
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