دورية أكاديمية
Neuronal Electrophysiological Activities Detection of Defense Behaviors Using an Implantable Microelectrode Array in the Dorsal Periaqueductal Gray
| العنوان: | Neuronal Electrophysiological Activities Detection of Defense Behaviors Using an Implantable Microelectrode Array in the Dorsal Periaqueductal Gray |
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| المؤلفون: | Botao Lu, Penghui Fan, Yiding Wang, Yuchuan Dai, Jingyu Xie, Gucheng Yang, Fan Mo, Zhaojie Xu, Yilin Song, Juntao Liu, Xinxia Cai |
| المصدر: | Biosensors, Vol 12, Iss 4, p 193 (2022) |
| بيانات النشر: | MDPI AG, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Biotechnology |
| مصطلحات موضوعية: | fear, implantable MEA, electrophysiology, dorsal periaqueductal gray, 2-MT, Biotechnology, TP248.13-248.65 |
| الوصف: | Defense is the basic survival mechanism of animals when facing dangers. Previous studies have shown that the midbrain periaqueduct gray (PAG) was essential for the production of defense responses. However, the correlation between the endogenous neuronal activities of the dorsal PAG (dPAG) and different defense behaviors was still unclear. In this article, we designed and manufactured microelectrode arrays (MEAs) whose detection sites were arranged to match the shape and position of dPAG in rats, and modified it with platinum-black nanoparticles to improve the detection performance. Subsequently, we successfully recorded the electrophysiological activities of dPAG neurons via designed MEAs in freely behaving rats before and after exposure to the potent analog of predator odor 2-methyl-2-thiazoline (2-MT). Results demonstrated that 2-MT could cause strong innate fear and a series of defensive behaviors, accompanied by the significantly increased average firing rate and local field potential (LFP) power of neurons in dPAG. We also observed that dPAG participated in different defense behaviors with different degrees of activation, which was significantly stronger in the flight stage. Further analysis showed that the neuronal activities of dPAG neurons were earlier than flight, and the intensity of activation was inversely proportional to the distance from predator odor. Overall, our results indicate that dPAG neuronal activities play a crucial role in controlling different types of predator odor-evoked innate fear/defensive behaviors, and provide some guidance for the prediction of defense behavior. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 12040193 2079-6374 |
| Relation: | https://www.mdpi.com/2079-6374/12/4/193; https://doaj.org/toc/2079-6374 |
| DOI: | 10.3390/bios12040193 |
| URL الوصول: | https://doaj.org/article/6df4277d786b451d8465da70e20201b2 |
| رقم الأكسشن: | edsdoj.6df4277d786b451d8465da70e20201b2 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 12040193 20796374 |
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| DOI: | 10.3390/bios12040193 |