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. Author manuscript; available in PMC: 2023 Dec 2.
Published in final edited form as: Cereb Cortex. 2023 Oct 17;33(23):11354–11372. doi: 10.1093/cercor/bhad371

Figure 2. Long-range input to S1 L1 from other cortical areas.

Figure 2

(A-E) Percentage of total fb labelled neurons (left), and percentage of labelled neurons in relation to nissl in each layer (right). (A) S1 contralateral cortex (B) M2 cortex, (C) M1 cortex, (D) S2 cortex, (E) visual (V1, V2L) cortices, (F) perirhinal cortices ipsilateral and contralateral. Counts of fb labelled neurons ipsilateral to application site (left) and contralateral (right). Quantification of the laminar pattern of long-range input to L1 shows the highest percentage of fb labelled neurons in cortical L2/3 and L5a. (G) Fast blue label (total numbers) in POm thalamus, zona incerta and midline thalamus shows that these three subcortical nuclei have projections to L1. Abbreviations in G: MD, midline; POm, posteromedial complex of thalamus; VPl, ventrolateral nucleus of thalamus; VPm, ventromedial nucleus of thalamus; Zi, zona incerta. Each dot in the graphs represents one brain section. Data are from four brains. Statistical analysis with one-way ANOVA, Bonferroni post-hoc test, ****p<0.0001. Analysis details in Table 1B. Scale bars in A-F 100 μm, in G 500 μm, in zoom-ins 50 μm.