Abstract
This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that minor issues remain unresolved (see decision letter).
Highlights
Decades ago, rodent research uncovered a subcortical pathway to the amygdala that rapidly transmits auditory signals of threat even when the auditory cortex is destroyed (Ledoux, 1998)
We discovered that the superior colliculus (SC) was connected to the pulvinar (PUL; fibre counts for PUL; left: M = 13.23, SD = 5.56, right: M = 13.00, SD = 5.59, minimum of 2 fibres per participant)
The elusive subcortical route to the amygdala has posed a unique challenge in studies of the human brain, due to its depth and its fast activation
Summary
Rodent research uncovered a subcortical pathway to the amygdala that rapidly transmits auditory signals of threat even when the auditory cortex is destroyed (Ledoux, 1998). The superior colliculus, pulvinar, and amygdala have been identified as nodes of a human subcortical route to the amygdala that bypasses the cortex (Morris et al, 1999). Magnetoencephalography studies using computational modelling have investigated whether the activation of these subcortical nodes is causally related These studies have consistently found evidence for a forward connection between the pulvinar and amygdala (McFadyen et al, 2017; Garvert et al, 2014; Rudrauf et al, 2008).
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