Abstract：
:Fear conditioning is a form of associative learning that is known to involve different brain areas, notably the amygdala, the prefrontal cortex and the periaqueductal grey (PAG). Here, we describe the functional role of pathways that link the cerebellum with the fear network. We found that the cerebellar fastigial nucleus (FN) sends glutamatergic projections to vlPAG that synapse onto glutamatergic and GABAergic vlPAG neurons. Chemogenetic and optogenetic manipulations revealed that the FN-vlPAG pathway controls bi-directionally the strength of the fear memories, indicating an important role in the association of the conditioned and unconditioned stimuli, a function consistent with vlPAG encoding of fear prediction error. Moreover, FN-vlPAG projections also modulate extinction learning. We also found a FN-parafascicular thalamus pathway, which may relay cerebellar influence to the amygdala and modulates anxiety behaviors. Overall, our results reveal multiple contributions of the cerebellum to the emotional system.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Frontera JL,Baba Aissa H,Sala RW,Mailhes-Hamon C,Georgescu IA,Léna C,Popa Ddoi
10.1038/s41467-020-18953-0subject
Has Abstractpub_date
2020-10-15 00:00:00pages
5207issue
1issn
2041-1723pii
10.1038/s41467-020-18953-0journal_volume
11pub_type
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