Prefrontal/accumbal catecholamine system processes high motivational salience

Research output: Contribution to journalArticle

Abstract

Motivational salience regulates the strength of goal seeking, the amount of risk taken, and the energy invested from mild to extreme. Highly motivational experiences promote highly persistent memories. Although this phenomenon is adaptive in normal conditions, experiences with extremely high levels of motivational salience can promote development of memories that can be re-experienced intrusively for long time resulting in maladaptive outcomes. Neural mechanisms mediating motivational salience attribution are, therefore, very important for individual and species survival and for well-being. However, these neural mechanisms could be implicated in attribution of abnormal motivational salience to different stimuli leading to maladaptive compulsive seeking or avoidance. We have offered the first evidence that prefrontal cortical norepinephrine (NE) transmission is a necessary condition for motivational salience attribution to highly salient stimuli, through modulation of dopamine (DA) in the nucleus accumbens (NAc), a brain area involved in all motivated behaviors. Moreover, we have shown that prefrontal-accumbal catecholamine (CA) system determines approach or avoidance responses to both reward- and aversion-related stimuli only when the salience of the unconditioned stimulus (UCS) is high enough to induce sustained CA activation, thus affirming that this system processes motivational salience attribution selectively to highly salient events.

Original languageEnglish
JournalFrontiers in Behavioral Neuroscience
Issue numberJUNE
DOIs
Publication statusPublished - Jun 27 2012

Keywords

  • Dopamine
  • Emotion
  • Mesoaccumbens
  • Motivation
  • Norepinephrine
  • Prefrontal cortex
  • Salience

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Neuropsychology and Physiological Psychology

Fingerprint Dive into the research topics of 'Prefrontal/accumbal catecholamine system processes high motivational salience'. Together they form a unique fingerprint.

  • Cite this