Neurons in the upper layers of the superior colliculus have well - defined receptive fields.
神经元在上丘的上层有明确的接收区.
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The tegmentum —— tectum —— tegmentum connections are only concerned with the mid - dle and deep layers of the superior colliculus.
被盖—顶盖—被盖的联系只与上丘中、深层有关.
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