Extended Data Figure 4-3
Top-down versus bottom-up amplitude-amplitude coupling strength (AAC) across the auditory hierarchy in synthetic envelope-preserved stimuli (EPS) Difference in top-down and bottom-up amplitude-amplitude coupling (AAC) strength for CFC between sectors 1 (A1/ML) and 2 (R/AL) (A), sectors 1 (A1/ML) and 3 (RTL) (B), sectors 1 (A1/ML) and 4 (RTp) (C), sectors 2 and 3 (D), sectors 2 and 4 (E) and sectors 3 and 4 (F) (see Methods and Materials 3.5 for sector definitions). Interactions between sector 1 (A1/ML) and higher order sectors show strong asymmetries in bottom-up and top-down coupling strength across the frequency spectrum; interactions among higher-order sectors (S2-S4) show less widespread asymmetries. Significant differences are marked by black outlines (p≤0.01, cluster-corrected). Results are depicted averaged across all channels and animals. Download Figure 4-3, EPS file.