Learning shapes the aversion and reward responses of lateral habenula neurons
- Tsinghua University, China
- National Institute of Biological Sciences, China
Abstract
The lateral habenula (LHb) is believed to encode negative motivational values. It remains unknown how LHb neurons respond to various stressors and how learning shapes their responses. Here, we used fiber-photometry and electrophysiology to track LHb neuronal activity in freely-behaving mice. Bitterness, pain, and social attack by aggressors intensively excite LHb neurons. Aversive Pavlovian conditioning induced activation by the aversion-predicting cue in a few trials. The experience of social defeat also conditioned excitatory responses to previously neutral social stimuli. In contrast, fiber photometry and signle-unit recordings revealed that sucrose reward inhibited LHb neurons and often produced excitatory rebound. It required prolonged conditioning and high reward probability to induce inhibition by reward-predicting cues. Therefore, LHb neurons can bidirectionally process a diverse array of aversive and reward signals. Importantly, their responses are dynamically shaped by learning, suggesting that the LHb participates in experience-dependent selection of behavioral responses to stressors and rewards.
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Author details
Funding
National Natural Science Foundation of China (91432114)
- Minmin Luo
Ministry of Science and Technology of the People's Republic of China (2012YQ03026005)
- Minmin Luo
The Beijing Municipal Government
- Minmin Luo
National Natural Science Foundation of China (91632302)
- Minmin Luo
Ministry of Science and Technology of the People's Republic of China (2013ZX0950910)
- Minmin Luo
Ministry of Science and Technology of the People's Republic of China (2015BAI08B02)
- Minmin Luo
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Animal experimentation: Animal care and use followed the institutional guidelines of the National Institute of Biological Sciences (NIBS), Beijing (Approval ID: NIBSLuoM15C) and the Regulations for the Administration of Affairs Concerning Experimental Animals of China.
Copyright
© 2017, Wang et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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Learning shapes the aversion and reward responses of lateral habenula neurons
eLife 6:e23045.
https://doi.org/10.7554/eLife.23045
