Phenomena such as large-scale stock market sell-offs and financial panic in general are often explained in terms of herding behaviors.
At how primitive of a level does one actually "follow the herd"? In other words, does this behavior elicit a strong response at the brainstem level (particularly in the tectum, i.e., the colliculi) at some cost to frontal cortical processing?
Obviously, it's a difficult task to run an EEG or have a subject in for an MRI during a real panic, so results based on simulations are certainly acceptable.