The Missing Link in Early Emotional Processing

doi:10.1177/17540739211022821

The Missing Link in Early Emotional Processing

2021-07-08

8

OA

AI

L

Luis Carretié *

R

Raghunandan Kumar Yadav

C

Constantino Méndez‐Bértolo

DOI：10.1177/17540739211022821

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Initial evaluation structures (IESs) currently proposed as the earliest detectors of affective stimuli (e.g., amygdala, orbitofrontal cortex, or insula) are high-order structures (a) whose response latency cannot account for the first visual cortex emotion-related response (~80 ms), and (b) lack the necessary infrastructure to locally analyze the visual features that define emotional stimuli. Several thalamic structures accomplish both criteria. The lateral geniculate nucleus (LGN), a first-order thalamic nucleus that actively processes visual information, with the complement of the thalamic reticular nucleus (TRN) are proposed as core IESs. This LGN-TRN tandem could be supported by the pulvinar, a second-order thalamic structure, and by other extrathalamic nuclei. The visual thalamus, scarcely explored in affective neurosciences, seems crucial in early emotional evaluation.

Keyword:

emotion

initial evaluation

lateral geniculate nucleus

pulvinar

superior colliculus

thalamic reticular nucleus

visual thalamus

The Missing Link in Early Emotional Processing

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