Anatomical Connectivity of the Intercalated Cells of the Amygdala

BST (Bed nuclei of the stria terminalis) MBA:351 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

The BNST contained moderately dense groups of rabies-labelled inputs to caudal ITCs.

Fig. 5c-d; Results, Caudal ITCs

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Intercalated cell GABAergic neurons nt-y231zwbxhf projects to IA (Intercalated amygdalar nucleus) MBA:1105 · Mouse

Main ITC outputs densely and broadly innervated the other intercalated cell clusters.

Fig. 2b-c; Results, Main ITC nucleus

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AI (Agranular insular area) MBA:95 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Inputs to main ITCs were consistently labelled in the insular cortex along most of its anteroposterior length.

Fig. 3c-d; Results, Main ITC nucleus

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PAA (Piriform-amygdalar area) MBA:788 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

The amygdalopiriform transition area provided rabies-labelled input to main ITCs.

Fig. 3c-d; Results, Main ITC nucleus

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Intercalated cell GABAergic neurons nt-y231zwbxhf projects to BMA (Basomedial amygdalar nucleus) MBA:319 · Mouse

Only a very light lateral ITC projection was seen in the basomedial amygdala.

Fig. 6; Results, Lateral ITCs

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AAA (Anterior amygdalar area) MBA:23 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

The anterior amygdaloid area contained substantial numbers of rabies-labelled inputs to main ITCs.

Fig. 3c-d; Results, Main ITC nucleus

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ZI (Zona incerta) MBA:797 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Caudal zona incerta neurons were labelled as presynaptic to caudal ITCs.

Fig. 5c-d; Results, Caudal ITCs

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CEA (Central amygdalar nucleus) MBA:536 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Central amygdala inputs seen for main ITCs were also labelled from caudal ITCs, which shared the same set of amygdalar sources.

Fig. 5; Results, Caudal ITCs

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ORBl (Orbital area, lateral part) MBA:723 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Monosynaptic rabies tracing from lateral ITCs labelled presynaptic neurons anteriorly in the lateral orbitofrontal cortex.

Fig. 7c-d; Results, Lateral ITCs

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AUDv (Ventral auditory area) MBA:1018 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Ventral auditory cortex neurons were labelled as inputs to caudal ITCs.

Fig. 5c-d; Results, Caudal ITCs

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SNr (Substantia nigra, reticular part) MBA:381 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Dense clusters of rabies-labelled inputs to lateral ITCs were found in the shell of the substantia nigra pars reticulata.

Fig. 7c-d; Results, Lateral ITCs

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AI (Agranular insular area) MBA:95 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

The presynaptic population from lateral OFC extended without a break through most of the insular cortex.

Fig. 7c-d; Results, Lateral ITCs

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Intercalated cell GABAergic neurons nt-y231zwbxhf projects to MA (Magnocellular nucleus) MBA:298 · Mouse

Dense main ITC terminal labelling was found in the magnocellular preoptic nucleus.

Fig. 2b-c; Results, Main ITC nucleus

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PALv (Pallidum, ventral region) MBA:835 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Scattered but abundant presynaptic neurons to main ITCs were present in the ventral pallidum.

Fig. 3c-d; Results, Main ITC nucleus

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MEA (Medial amygdalar nucleus) MBA:403 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Medial amygdala neurons were labelled as monosynaptic inputs to main ITCs.

Fig. 3c-d; Results, Main ITC nucleus

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BMAp (Basomedial amygdalar nucleus, posterior part) MBA:334 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

The posterior basomedial amygdala was one of the main amygdalar sources of rabies-labelled input to lateral ITCs.

Fig. 7; Results, Lateral ITCs

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MEA (Medial amygdalar nucleus) MBA:403 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Amygdalar input to lateral ITCs was sparse overall, but the medial amygdala held among the most labelled presynaptic cells.

Fig. 7; Results, Lateral ITCs

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Intercalated cell GABAergic neurons nt-y231zwbxhf projects to PALv (Pallidum, ventral region) MBA:835 · Mouse

Main ITC axon terminals densely innervated the ventral pallidum.

Fig. 2b-c; Results, Main ITC nucleus

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CA1sp (Field CA1, pyramidal layer) MBA:407 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Rabies tracing from caudal ITCs labelled presynaptic cells in the ventral CA1 pyramidal layer.

Fig. 5c-d; Results, Caudal ITCs

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Eth (Ethmoid nucleus of the thalamus) MBA:560581551 synapses onto Intercalated cell GABAergic neurons nt-y231zwbxhf · Mouse

Monosynaptic rabies tracing from FoxP2+ main ITCs labelled some of the densest presynaptic populations in the ethmoid thalamic nucleus.

Fig. 3c-d; Results, Main ITC nucleus

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