Synaptic Organization of Perisomatic GABAergic Inputs onto the Principal Cells of the Mouse Basolateral Amygdala

BLA cholecystokinin-expressing interneurons nt-6730a6m5pa synapses onto BLA glutamatergic principal neurons nt-wprma5fcrr · Mouse

Electron microscopy of randomly sampled boutons from biocytin-filled CCK/CB1 basket cells showed synapses onto somata and dendrites of BLA neurons. 32 of 54 synapses from 5 cells were on dendrites.

Results, 'Target distribution of BCs'

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.

BLA parvalbumin-expressing interneurons nt-fwck8mp6aj synapses onto BLA glutamatergic principal neurons nt-wprma5fcrr · Mouse

Biocytin-filled boutons of PV basket cells were seen by electron microscopy to form symmetrical synapses on somata and dendrites of BLA neurons. In random sampling, 23 of 57 synapses from 6 cells were on dendrites, the rest on somata or proximal dendrites.

Fig. 3L,M; Results, 'Target distribution of BCs'

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.

BLA (Basolateral amygdalar nucleus) MBA:295 synapses onto BLA glutamatergic principal neurons nt-wprma5fcrr · Mouse

In 7 biocytin-filled PV-expressing axo-axonic cells, axon terminals formed symmetrical synapses mainly on axon initial segments, not on somata or dendrites. Most sampled boutons (41 of 55) contacted axon segments 0.5 to 1 µm in diameter, and the most proximal axon was rarely targeted.

Fig. 3D,E; Results, 'Postsynaptic targets of AACs'

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) disagrees. “The subject is the whole BLA region, but the paper's presynaptic element is the PV-expressing axo-axonic cell population, not the nucleus.”