Full Idea
There is still some hope for something like identity theory for sensations. But almost no one believes that strict identity theory will work for more complex mental states. Strict identity is stronger than type neurophysicalism.
Gist of Idea
Sensations may be identical to brain events, but complex mental events don't seem to be
Source
Owen Flanagan (The Really Hard Problem [2007], 3 'Ontology')
Book Reference
Flanagan,Owen: 'The Really Hard Problem' [MIT 2007], p.94
A Reaction
It is so hard to express the problem. What needs to be explained? How can one bunch of neurons represent many different things? It's not like computing. That just transfers the data to brains, where the puzzling stuff happens.