When people listen to their favorite music, their blood vessels (血管) become wider in much the same way as when they are laughing, or taking blood medications.
请问:when they are laughing, or taking blood medications是什么从句?是作介词as的宾语从句吗?谢谢。
这个when是时间状语从句,表示当....的时候,修饰的是as(即第二个as)分句中省略了成分:
相当于..... become wider in much the same way as (their blood vessels become wider)when....,when修饰as分句中的谓语动词。