Year: 2020
Type: article
Abstract: The hippocampal CA3 contributes to spatial working memory (SWM), but which stage of SWM the CA3 neurons act on and whether the lateralization of CA3 function occurs in SWM is also unknown. Here, we reveal increased neural activity in both sample and choice phases of SWM. Left CA3 (LCA3) neurons show higher sensitivity in the choice phase during the correct versus error trials compared with right CA3 (RCA3) neurons. LCA3 initiates firing prior to RCA3 in the choice phase. Optogenetic suppression of pyramidal neurons in LCA3 disrupts SWM only in the choice phase. Furthermore, we discover that parvalbumin (PV) neurons, rather than cholinergic neurons in the medial septum (DB were cholinergic neurons), can project directly to unilateral CA3. Selective suppression of PV neurons in the MS projecting to LCA3 impairs SWM. The findings suggest that MSPV-LCA3 projection plays a crucial role in manipulating the lateralization of LCA3 in the retrieval of SWM.
Source: Nature Communications
Authors: Da Song, Deheng Wang, Qinghu Yang, Tianyi Yan, Zhe Wang, Yan Yan, Juan Zhao, Zhen Xie, Yuchen Liu, Zunji Ke, Talal Jamil Qazi, Yanhui Li, Yili Wu, Qing Shi, Yiran Lang, Heao Zhang, Tao Huang, Chunjian Wang, Zhenzhen Quan, Hong Qing
Language: English
Topic: Memory and Neural Mechanisms
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $5,380
Funders: National Natural Science Foundation of China, Beijing Normal University, Beijing Institute of Technology, Beijing Municipal Science and Technology Commission, Shanghai University of Traditional Chinese Medicine, Directorate for Biological Sciences, National Key Research and Development Program of China
OpenAlex ID: W3032896362