By the late 1970s, neurologists had switched to thinking of them as just "mental noise" - the random byproducts of the neural-repair work that goes on during sleep.请问老师，这里的to thinking是不定式还是介词呀？此时的Switch是及物还是不及物呢？To thinking是做Switch的宾语吗？
介词
并不是to thinking
而是 switch to
不及物丫
Li Ming wen to school.
thingking为宾语
