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Figure 1 - I'll take the low road: The evolutionary underpinnings of visually triggered fear

Figure 1: The concept of the high road (cortical) and low road (subcortical) visual pathways for processing fear in primates. On the high road, visual information from retinal ganglion cells is relayed to the visual cortex via the lateral geniculate nucleus, a brain area in the thalamus. Visual information is processed through several areas of the cortex before it's sent to the amygdala, whereupon autonomic and endocrine mediators of fear are engaged. On the low road, visual information is sent first to the superior colliculus in the midbrain before being relayed to the amygdala via the pulvinar nucleus. Adapted from Pessoa and Adolphs (2010). LGN, lateral geniculate nucleus; SC, superior colliculus; TE, inferior temporal cortex; TEO, inferior temporal cortex; V, visual cortex.
The concept of the high road (cortical) and low road (subcortical) visual pathways for processing fear in primates. On the high road, visual information from retinal ganglion cells is relayed to the visual cortex via the lateral geniculate nucleus, a brain area in the thalamus. Visual information is processed through several areas of the cortex before it's sent to the amygdala, whereupon autonomic and endocrine mediators of fear are engaged. On the low road, visual information is sent first to the superior colliculus in the midbrain before being relayed to the amygdala via the pulvinar nucleus. Adapted from Pessoa and Adolphs (2010). LGN, lateral geniculate nucleus; SC, superior colliculus; TE, inferior temporal cortex; TEO, inferior temporal cortex; V, visual cortex.
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