Some research indicates that as perceived buttock size increases, men feel more attracted to women

参考译文：一些调查表明当被注意到臀部尺寸在增大时，女人们会更加吸引男人们。

这里的perceived是做adj修饰buttock size，as引导的状语从句吗？而不并是像这以下这一句as引导的非限制性定语从句对吗？

He is nice, as was mentioned before = He is nice, as mentioned before

谢谢老师回答！

祝各位老师以及管理员元旦快乐

解答如下：

perceived 这里为过去分词作前置定语，修饰名词buttock size,as这里引导时间状语从句，当...的时候。