Temporal correlation counts! Very interesting read on combining information from sights and sounds to make sense of our surroundings. Click the title below for a nice overview via Medical News Today. 

Researchers Discover How The Brain Merges Sights And Sounds.

For the official abstract and links to the full article, click here for the Pub Med listing, or see the following reference:

Cesare V. Parise, Charles Spence, & Marc O. Ernst. (2011). When correlation implies causation in multisensory Integration. Current Biology. doi: 10.1016/j.cub.2011.11.039

And…if you’re interested in more reading about sight and sound integration, here’s another cool one:

Watkins, S., Shams, L., Tanaka, S., Haynes, J. D., & Rees, G. (2006). Sound alters activity in human V1 in association with illusory visual perception. Neuroimage. 31(3). 1247-1256. PMID 16556505.