The Emotional Gatekeeper: A Computational Model of Attentional Selection and Suppression through the Pathway from the Amygdala to the Inhibitory Thalamic Reticular Nucleus
Fig 2
Attentional suppression and selection by the EmGate model.
A, When the feed plan is active, only CS1 and CS2 can pass through the attentional gate (i) and (ii), but CS3 is suppressed via the BA-TRN projection (iii). B, When the fear plan is active, CS1 and CS2 are suppressed (i), (ii) and CS3 is attended to (iii). Note that LA neurons are only active when the corresponding CS is present [A(i), A(ii), B(iii)]. By contrast, BA neurons receive excitation from plan cortex, which allows the BA-TRN projection to mediate suppression of distractors and irrelevant stimuli even when the corresponding CS is not present. The subplots on the left show the behavior of the model when CS1 is presented (i). The subplots in the center show the behavior of the model when CS2 is presented (ii). The subplots on the right show the behavior of the model when CS3 is presented (iii).