Aversive stimuli bias corticothalamic responses to motivationally significant cues

eLife

Federica Lucantonio¹  Anna J Chang¹  Zhixiao Su¹  Eunyoung Kim¹  Jeremiah Y Cohen¹  Bilal A Bari¹ 

[1] The Solomon H Snyder Department of Neuroscience, Brain Science Institute, Kavli Neuroscience Discovery Institute, The Johns Hopkins University School of Medicine, Baltimore, United States;

关键词: reward;    decision;    neurophysiology;    Mouse;   

DOI  :  10.7554/eLife.57634

来源: eLife Sciences Publications, Ltd

【 摘 要 】

Making predictions about future rewards or punishments is fundamental to adaptive behavior. These processes are influenced by prior experience. For example, prior exposure to aversive stimuli or stressors changes behavioral responses to negative- and positive-value predictive cues. Here, we demonstrate a role for medial prefrontal cortex (mPFC) neurons projecting to the paraventricular nucleus of the thalamus (PVT; mPFC→PVT) in this process. We found that a history of aversive stimuli negatively biased behavioral responses to motivationally relevant cues in mice and that this negative bias was associated with hyperactivity in mPFC→PVT neurons during exposure to those cues. Furthermore, artificially mimicking this hyperactive response with selective optogenetic excitation of the same pathway recapitulated the negative behavioral bias induced by aversive stimuli, whereas optogenetic inactivation of mPFC→PVT neurons prevented the development of the negative bias. Together, our results highlight how information flow within the mPFC→PVT circuit is critical for making predictions about motivationally-relevant outcomes as a function of prior experience.

【 授权许可】

CC BY