期刊
ELIFE
卷 10, 期 -, 页码 -出版社
eLIFE SCIENCES PUBL LTD
DOI: 10.7554/eLife.56491
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资金
- National Science Foundation [CBET-1848029, DGE-1247312, CCF-1955981]
- National Institutes of Health [1R01MH122971-01A1, 1F31MH123008-01A1, 1R21MH109941-01, F31 NS 105420]
- National Academy of Engineering
The study found that different populations of hippocampal CA1 neurons play different roles in trace conditioning and extinction learning, with unique connectivity patterns. Additionally, differences in CA1 network connectivity were observed between conditioning and extinction, despite overall connectivity density remaining constant.
Trace conditioning and extinction learning depend on the hippocampus, but it remains unclear how neural activity in the hippocampus is modulated during these two different behavioral processes. To explore this question, we performed calcium imaging from a large number of individual CA1 neurons during both trace eye-blink conditioning and subsequent extinction learning in mice. Our findings reveal that distinct populations of CA1 cells contribute to trace conditioned learning versus extinction learning, as learning emerges. Furthermore, we examined network connectivity by calculating co-activity between CA1 neuron pairs and found that CA1 network connectivity patterns also differ between conditioning and extinction, even though the overall connectivity density remains constant. Together, our results demonstrate that distinct populations of hippocampal CA1 neurons, forming different sub-networks with unique connectivity patterns, encode different aspects of learning.
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