Risk-sensitive neurons in macaque posterior cingulate cortex

by: Allison N Mccoy, Michael L Platt

Nature Neuroscience, Vol. 8, No. 9. (14 August 2005), pp. 1220-1227.

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Abstract

People and animals often demonstrate strong attraction or aversion to options with uncertain or risky rewards, yet the neural substrate of subjective risk preferences has rarely been investigated. Here we show that monkeys systematically preferred the risky target in a visual gambling task in which they chose between two targets offering the same mean reward but differing in reward uncertainty. Neuronal activity in posterior cingulate cortex (CGp), a brain area linked to visual orienting and reward processing, increased when monkeys made risky choices and scaled with the degree of risk. CGp activation was better predicted by the subjective salience of a chosen target than by its actual value. These data suggest that CGp signals the subjective preferences that guide visual orienting.

@article{citeulike:305340, abstract = {People and animals often demonstrate strong attraction or aversion to options with uncertain or risky rewards, yet the neural substrate of subjective risk preferences has rarely been investigated. Here we show that monkeys systematically preferred the risky target in a visual gambling task in which they chose between two targets offering the same mean reward but differing in reward uncertainty. Neuronal activity in posterior cingulate cortex (CGp), a brain area linked to visual orienting and reward processing, increased when monkeys made risky choices and scaled with the degree of risk. CGp activation was better predicted by the subjective salience of a chosen target than by its actual value. These data suggest that CGp signals the subjective preferences that guide visual orienting.}, author = {Mccoy, Allison N. and Platt, Michael L. }, citeulike-article-id = {305340}, doi = {http://dx.doi.org/10.1038/nn1523}, issn = {1097-6256}, journal = {Nature Neuroscience}, keywords = {animal, cingulate, monkey, risk, uncertainty}, month = {August}, number = {9}, pages = {1220--1227}, posted-at = {2005-08-30 10:03:07}, priority = {3}, publisher = {Nature Publishing Group}, title = {Risk-sensitive neurons in macaque posterior cingulate cortex}, url = {http://dx.doi.org/10.1038/nn1523}, volume = {8}, year = {2005} }

RIS record

TY - JOUR ID - citeulike:305340 L3 - citeulike-article-id:305340 TI - Risk-sensitive neurons in macaque posterior cingulate cortex JF - Nature Neuroscience VL - 8 IS - 9 SP - 1220 EP - 1227 PB - Nature Publishing Group SN - 1097-6256 N2 - People and animals often demonstrate strong attraction or aversion to options with uncertain or risky rewards, yet the neural substrate of subjective risk preferences has rarely been investigated. Here we show that monkeys systematically preferred the risky target in a visual gambling task in which they chose between two targets offering the same mean reward but differing in reward uncertainty. Neuronal activity in posterior cingulate cortex (CGp), a brain area linked to visual orienting and reward processing, increased when monkeys made risky choices and scaled with the degree of risk. CGp activation was better predicted by the subjective salience of a chosen target than by its actual value. These data suggest that CGp signals the subjective preferences that guide visual orienting. KW - animal KW - cingulate KW - monkey KW - risk KW - uncertainty AU - Mccoy, Allison AU - Platt, Michael PY - 2005/08/14/ UR - http://dx.doi.org/10.1038/nn1523 ER -

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