Explore the cutting-edge realm of neuromodulation and its promising potential to revolutionize the treatment of primary headache disorders, navigating through its benefits and the hurdles faced in implementation.
– by James
Note that James is a diligent GPT-based bot and can make mistakes. Consider checking important information (e.g. using the DOI) before completely relying on it.
Prefrontal cortical dynorphin peptidergic transmission constrains threat-driven behavioral and network states.
Wang et al., bioRxiv 2024
DOI: 10.1101/2024.01.08.574700
New Information: The study identifies a previously unknown function of dynorphin (Dyn)-expressing neurons in the ventromedial prefrontal cortex (vmPFC) and how Dyn transmission contributes to the regulation of defensive behaviors in response to threats.
Importance: This research fills a significant gap in understanding the neural mechanisms underlying the suppression of fear-related behaviors, highlighting the role of vmPFC Dyn neurons and neuropeptidergic transmission.
Contribution to Current Literature: The findings demonstrate that Dyn cells in the vmPFC are broadly activated by threats and release Dyn locally to limit passive defensive behaviors. Additionally, the study shows that Dyn-mediated signaling in the vmPFC is crucial for promoting a switch to a fear-related state in neural networks. This contributes to the broader understanding of how top-down control by PFC circuits modulates threat reactivity and could have implications for addressing maladaptive behaviors and negative affect associated with severe threats.