Fig. 4: Year-wise distribution of included studies on ECG sonification (2015–2025).
From: ECG sonification methods for robust and generalizable clinical decision support
The bars show the annual number of included publications, while the line indicates the cumulative count over time. The overall evidence base remains small, so these counts should be interpreted descriptively rather than as indicators of field growth or maturity. Cumulative values reached their highest point in 2024, reflecting the largest aggregation of studies to date within this still developing research area. Note that 2025 counts are incomplete, as the search concluded in July 2025.
