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In monkeys making value-based decisions, LIP neurons encode cue salience and not action value.


ABSTRACT: In monkeys deciding between alternative saccadic eye movements, lateral intraparietal (LIP) neurons representing each saccade fire at a rate proportional to the value of the reward expected upon its completion. This observation has been interpreted as indicating that LIP neurons encode saccadic value and that they mediate value-based decisions between saccades. Here, we show that LIP neurons representing a given saccade fire strongly not only if it will yield a large reward but also if it will incur a large penalty. This finding indicates that LIP neurons are sensitive to the motivational salience of cues. It is compatible neither with the idea that LIP neurons represent action value nor with the idea that value-based decisions take place in LIP neurons.

SUBMITTER: Leathers ML 

PROVIDER: S-EPMC3705639 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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In monkeys making value-based decisions, LIP neurons encode cue salience and not action value.

Leathers Marvin L ML   Olson Carl R CR  

Science (New York, N.Y.) 20121001 6103


In monkeys deciding between alternative saccadic eye movements, lateral intraparietal (LIP) neurons representing each saccade fire at a rate proportional to the value of the reward expected upon its completion. This observation has been interpreted as indicating that LIP neurons encode saccadic value and that they mediate value-based decisions between saccades. Here, we show that LIP neurons representing a given saccade fire strongly not only if it will yield a large reward but also if it will i  ...[more]

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