The Habenulo-Raphe Serotonergic Circuit Encodes an Aversive Expectation Value Essential for Adaptive Active Avoidance of Danger
| Autor: | Tetsuya Koide, Toshiyuki Shiraki, Masakazu Agetsuma, Masaru Matsuda, Yoichi Yabuki, Hisaya Kakinuma, Masako Yamazaki, Mikako Takahoko, Ryo Aoki, Takashi Tsuboi, Hidenori Aizawa, Masae Kinoshita, Ryunosuke Amo, Shin-ichi Higashijima, Felipe Fredes, Nobuhiko Miyasaka, Tazu Aoki, Tomoki Fukai, Hitoshi Okamoto, Yoshihiro Yoshihara |
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| Jazyk: | angličtina |
| Předmět: |
Male
Serotonin Neuroscience(all) 5 7-Dihydroxytryptamine Conditioning Classical Action Potentials Optogenetics Neurotransmission Serotonergic Animals Genetically Modified Adaptation Psychological Neural Pathways Avoidance Learning medicine Animals Premovement neuronal activity Fear conditioning Zebrafish Habenula Neurotransmitter Agents Raphe General Neuroscience Panic Fear Zebrafish Proteins Luminescent Proteins Vesicular Glutamate Transport Protein 2 Raphe Nuclei Cues medicine.symptom Psychology Neuroscience Social psychology Serotonergic Neurons Transcription Factors |
| Zdroj: | Neuron. (5):1034-1048 |
| ISSN: | 0896-6273 |
| DOI: | 10.1016/j.neuron.2014.10.035 |
| Popis: | SummaryAnticipation of danger at first elicits panic in animals, but later it helps them to avoid the real threat adaptively. In zebrafish, as fish experience more and more danger, neurons in the ventral habenula (vHb) showed tonic increase in the activity to the presented cue and activated serotonergic neurons in the median raphe (MR). This neuronal activity could represent the expectation of a dangerous outcome and be used for comparison with a real outcome when the fish is learning how to escape from a dangerous to a safer environment. Indeed, inhibiting synaptic transmission from vHb to MR impaired adaptive avoidance learning, while panic behavior induced by classical fear conditioning remained intact. Furthermore, artificially triggering this negative outcome expectation signal by optogenetic stimulation of vHb neurons evoked place avoidance behavior. Thus, vHb-MR circuit is essential for representing the level of expected danger and behavioral programming to adaptively avoid potential hazard. |
| Databáze: | OpenAIRE |
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