The problem with value.

Neurosci Biobehav Rev

Division of Humanities and Social Sciences, and Computation and Neural Systems Program, California Institute of Technology, United States. Electronic address:

Published: June 2014

Neural correlates of value have been extensively reported in a diverse set of brain regions. However, in many cases it is difficult to determine whether a particular neural response pattern corresponds to a value-signal per se as opposed to an array of alternative non-value related processes, such as outcome-identity coding, informational coding, encoding of autonomic and skeletomotor consequences, alongside previously described "salience" or "attentional" effects. Here, I review a number of experimental manipulations that can be used to test for value, and I identify the challenges in ascertaining whether a particular neural response is or is not a value signal. Finally, I emphasize that some non-value related signals may be especially informative as a means of providing insight into the nature of the decision-making related computations that are being implemented in a particular brain region.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4332826PMC
http://dx.doi.org/10.1016/j.neubiorev.2014.03.027DOI Listing

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