Amygdaloid projections to the ventral striatum in mice: direct and indirect chemosensory inputs to the brain reward system

BMA (Basomedial amygdalar nucleus) MBA:319 projects to OT (Olfactory tubercle) MBA:754 · Mouse

Fluorogold-labeled cells were abundant in both the anterior and posterior accessory basal nucleus after the tubercle injection.

Fig. 3C,D

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BLAa (Basolateral amygdalar nucleus, anterior part) MBA:303 projects to ACB (Nucleus accumbens) MBA:56 · Mouse

Tracer injections into the accumbens shell and core retrogradely labeled many neurons in the anterior basal nucleus. Labeling was bilateral after lateral shell and core injections.

Table 1; Fig. 2B-H

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COA (Cortical amygdalar area) MBA:631 projects to BLA (Basolateral amygdalar nucleus) MBA:295 · Mouse

The CxA injection produced abundant anterograde labeling in the basal nucleus, densest laterally.

Fig. 5C

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BLAv (Basolateral amygdalar nucleus, ventral part) MBA:451 projects to OT (Olfactory tubercle) MBA:754 · Mouse

The ventral part of the basal nucleus held abundant fluorogold-labeled cells after the tubercle injection.

Fig. 3C,D

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BMAp (Basomedial amygdalar nucleus, posterior part) MBA:334 projects to ACB (Nucleus accumbens) MBA:56 · Mouse

The posterior accessory basal nucleus held retrogradely labeled cells after shell injections and a dense population after core injections. Labeling was bilateral when both shell and core were involved.

Table 1; Fig. 2

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.

COA (Cortical amygdalar area) MBA:631 projects to BMA (Basomedial amygdalar nucleus) MBA:319 · Mouse

The CxA injection produced abundant anterograde labeling in the accessory basal nucleus, densest in its lateral aspect.

Fig. 5C

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.

COA (Cortical amygdalar area) MBA:631 projects to ACB (Nucleus accumbens) MBA:56 · Mouse

The cortex-amygdala transition zone contained retrogradely labeled cells after accumbens injections, abundant after the lateral shell injection and in its deep portion after core injections.

Table 1; Fig. 2B,G

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.

PAA (Piriform-amygdalar area) MBA:788 projects to OT (Olfactory tubercle) MBA:754 · Mouse

Retrogradely labeled cells were present in the amygdalopiriform transition area after the tubercle injection.

Fig. 3C,D

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.

LA (Lateral amygdalar nucleus) MBA:131 projects to OT (Olfactory tubercle) MBA:754 · Mouse

Only a small number of retrogradely labeled cells were found in the caudal lateral nucleus after the tubercle injection.

Results, olfactory tubercle injections

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BLAp (Basolateral amygdalar nucleus, posterior part) MBA:311 projects to ACB (Nucleus accumbens) MBA:56 · Mouse

Medial shell injections labeled many somata throughout the posterior basal nucleus, some of them contralateral. Core injections labeled cells in its rostral part.

Table 1; Fig. 2C-E

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.

LA (Lateral amygdalar nucleus) MBA:131 projects to ACB (Nucleus accumbens) MBA:56 · Mouse

Core injections produced a dense, bilateral population of labeled cells in the anterior lateral nucleus, especially its dorsolateral part. Medial-shell-only injections left the lateral nucleus unlabeled, and a lateral shell injection labeled cells in the rostral ventrolateral part.

Table 1; Fig. 2H

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.