who was responsible for the humanitarian movement to improve the conditions of insane asylums

Question

I think Philippe Pinel is the person you seek, at least he was the first.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8657817&dopt=Abstract

I hope this helps. Thanks for asking.

Dorthea Dix was given a lot of credit in the early 1800's.