求翻译：中枢神经系统内参与某一反射活动的神经元群，是反射弧的中枢整合部分。例如参与瞳孔对光反射的中枢结构叫做对光反射中枢。是什么意思？

Central nervous system involved in a reflex activity of groups of neurons within the reflex arc of the central integration part. Such as participation in the central structure of the pupillary light reflex is called the light reflex center.

Central nervous system involvement in a reflex activity of the neurons, the nerve is a reflex arc consolidation. For example, by participating in the pupillary light reflex hub structure is called Optical reflection hub.

The central nervous system materials for internal reference and some reflection activity neuron group, is the reflex arc main center conformity part.For example participates in the pupil to the light reflection main center structure named to the light reflex center.

Reflex activity of neurons in the central nervous system involvement in a group is the Central consolidated part of the reflex arc. For example participation in the central structure of the pupillary light reflex is called the light reaction Central.

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