Abstract：
:"Multisensory integration" refers to the phenomenon by which information from different senses is integrated in order to interpret and guide responses to external events. Here, we advance two specific hypotheses: (1) the process of multisensory integration in spatial localization is statistically optimal, and (2) the optimality of the processes guiding this localization results from the implementation of Bayes' rule. We explicitly test the predictions of an optimal (Bayesian) model for the behavior of animals trained and tested in a spatial localization task, and find that the model correctly predicts behavioral patterns which are at times counterintuitive. The model also predicts the receptive field properties of superior colliculus neurons that are involved in these behaviors, and sheds new light on the computational responsibilities different circuits have in effecting these behaviors. Thus, the Bayesian model appears to represent not only a yardstick for the optimality of a behavior, but also a descriptor of the underlying neural processes.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Rowland B,Stanford T,Stein Bdoi
10.1007/s00221-006-0847-2subject
Has Abstractpub_date
2007-06-01 00:00:00pages
153-61issue
1eissn
0014-4819issn
1432-1106journal_volume
180pub_type
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