Heatmap from Scientific Research

Average responses strength to each call type for three example units with low, medium, and high selectivity. The title of each bar plot shows the value of the Z-based selectivity index (SI) for the corresponding example unit. TheZscored response strength (Z) of all auditory units in the entire dataset (n = 292) is shown on the color matrix. Each row of this matrix shows the average Z obtained in a unit for each call type of the zebra finch repertoire. The call types on the x axis have been sorted according to the average Z for that call type across all units: distress calls (Di) had the highest average response strength followed by song (So), etc. Units on the y axis are first sorted according to the call type that gave the highest Z for that unit following the order of the x axis: 51 units had the peak responses for distress call, 61 for song, etc. Within each of these blocks, the rows were further sorted according to the Z-based SI: the most selective units are on the bottom of the block and the least selective at the top.

DOI