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A–D: average decoding accuracy as functions of the signal-to-noise ratio (SNR) for each of the defined SNR response classes (blue, red, and green) and for the full population (black). B and D show the results when accuracy for each site is normalized to that obtained without noise before being averaged. Results for decoding sweep trajectory (ID) are shown in A and B (n = 321 sites), and those for decoding sweep amplitude (dB) are shown in C and D (n = 181 sites). Shading indicates ±SE.
