@article{91, keywords = {Hodgkin-Huxley networks, Local field potential, PV interneurons, Pavlovian fear conditioning, SOM interneurons, Theta rhythm, VIP interneurons, biomarker, gamma rhythm, spike-timing-dependent plasticity}, author = {Anna Cattani and Don Arnold and Michelle McCarthy and Nancy Kopell}, title = {Basolateral amygdala oscillations enable fear learning in a biophysical model.}, abstract = {

The basolateral amygdala (BLA) is a key site where fear learning takes place through synaptic plasticity. Rodent research shows prominent low theta (~3-6 Hz), high theta (~6-12 Hz), and gamma (\>30 Hz) rhythms in the BLA local field potential recordings. However, it is not understood what role these rhythms play in supporting the plasticity. Here, we create a biophysically detailed model of the BLA circuit to show that several classes of interneurons (PV, SOM, and VIP) in the BLA can be critically involved in producing the rhythms; these rhythms promote the formation of a dedicated fear circuit shaped through spike-timing-dependent plasticity. Each class of interneurons is necessary for the plasticity. We find that the low theta rhythm is a biomarker of successful fear conditioning. The model makes use of interneurons commonly found in the cortex and, hence, may apply to a wide variety of associative learning situations.

}, year = {2024}, journal = {bioRxiv : the preprint server for biology}, month = {10/2024}, issn = {2692-8205}, language = {eng}, }