Neurons in the orbitofrontal cortex encode economic value.

Nature
Camillo Padoa-Schioppa, John A Assad

Abstract

Economic choice is the behaviour observed when individuals select one among many available options. There is no intrinsically 'correct' answer: economic choice depends on subjective preferences. This behaviour is traditionally the object of economic analysis and is also of primary interest in psychology. However, the underlying mental processes and neuronal mechanisms are not well understood. Theories of human and animal choice have a cornerstone in the concept of 'value'. Consider, for example, a monkey offered one raisin versus one piece of apple: behavioural evidence suggests that the animal chooses by assigning values to the two options. But where and how values are represented in the brain is unclear. Here we show that, during economic choice, neurons in the orbitofrontal cortex (OFC) encode the value of offered and chosen goods. Notably, OFC neurons encode value independently of visuospatial factors and motor responses. If a monkey chooses between A and B, neurons in the OFC encode the value of the two goods independently of whether A is presented on the right and B on the left, or vice versa. This trait distinguishes the OFC from other brain areas in which value modulates activity related to sensory or motor processes. O...Continue Reading

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Mar 14, 2012·Experimental Brain Research·Takafumi MinamimotoTetsuya Suhara
Sep 18, 2009·Brain Structure & Function·Tobias SommerChristian Büchel
Jul 30, 2008·The Behavioral and Brain Sciences·A David RedishAdam Johnson
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