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. 2022 Feb 28;11:e71965. doi: 10.7554/eLife.71965

Figure 1. Basal forebrain (BF) GABAergic inputs define three subtypes of periglomerular (PG) cells.

Figure 1.

(A) Diagram of the glomerular microcircuit. PG cells are small GABAergic interneurons (red) surrounding each glomerulus. Olfactory sensory neurons (OSNs)-innervated type 1 PG cells do not receive BF GABAergic inputs, whereas type 2 PG cells do. Three subtypes of type 2 PG cells have been identified in Sanz Diez et al., 2019 based on their synaptic, molecular, and intrinsic properties. See ‘Introduction’ for details. (B) Representative optogenetically evoked BF GABAergic inputs in the different subtypes of type 2 PG cells. Amplitudes are normalized for comparison. Data from Sanz Diez et al., 2019. (C) Summary table of the properties that distinguish different PG cell subtypes. Cases are left empty when the properties have not been determined, are diverse, or uncertain.