Abstract
An essential component in animal behavior is the ability to process emotion and dissociate among positive and negative valence in response to a rewarding or aversive stimulus. The medial prefrontal cortex (mPFC)—responsible for higher order executive functions that include cognition, learning, and working memory; and is also involved in sociability—plays a major role in emotional processing and control. Although the amygdala is widely regarded as the “emotional hub,” the mPFC encodes for context-specific salience and elicits top-down control over limbic circuitry. The mPFC can then conduct behavioral responses, via cortico-striatal and cortico-brainstem pathways, that correspond to emotional stimuli. Evidence shows that abnormalities within the mPFC lead to sociability deficits, working memory impairments, and drug-seeking behavior that include addiction and compulsive disorders; as well as conditions such as anhedonia. Recent studies investigate the effects of aberrant salience processing on cortical circuitry and neuronal populations associated with these behaviors. In this chapter, we discuss mPFC valence processing, neuroanatomical connections, and physiological substrates involved in mPFC-associated behavior. We review neurocomputational and theoretical models such as “mixed selectivity,” that describe cognitive control, attentiveness, and motivational drives. Using this knowledge, we describe the effects of valence imbalances and its influence on mPFC neural pathways that contribute to deficits in social cognition, while understanding the effects in addiction/compulsive behaviors and anhedonia.
Original language | English (US) |
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Title of host publication | What does Medial Frontal Cortex Signal During Behavior? Insights from Behavioral Neurophysiology |
Editors | Adam T. Brockett, Adam T. Brockett, Linda M. Amarante, Mark Laubach, Matthew R. Roesch, Matthew R. Roesch |
Publisher | Academic Press Inc |
Pages | 171-212 |
Number of pages | 42 |
ISBN (Print) | 9780323853361 |
DOIs | |
State | Published - Jan 2021 |
Publication series
Name | International Review of Neurobiology |
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Volume | 158 |
ISSN (Print) | 0074-7742 |
ISSN (Electronic) | 2162-5514 |
Funding
We thank Amy Cao for her illustration of Fig. 1. We thank Romy Wichmann and Gillian Matthews for comments on the manuscript, and Earl Miller for helpful discussion. We acknowledge funding sources K99 MH124435-01 (N.P.-C.), 8 K00 MH124182-03 (A.A.C.) and R01-MH115920 (NIMH; K.M.T.) Pioneer Award DP1-AT009925 (NCCIH; K.M.T.). The authors report no competing interest or biomedical financial interests. All authors contribute to conception, writing, figure making and editing/revising.
Keywords
- Addiction
- Anhedonia
- Circuits
- Context-modulated
- Ensembles
- Evolution
- Mental health
- Mixed selectivity
- Prefrontal cortex
- Social
- Species
- Valence
ASJC Scopus subject areas
- Clinical Neurology
- Cellular and Molecular Neuroscience