Early and rapid perceptual learning

Supplementary Fig. 1 (gif 9K)
Frequency-discrimination sensitivity for two additional groups of normally hearing adult listeners with and without prior procedural training. The "Frequency" Group (n = 11) performed 6 blocks of 200 trials on a 2I-2AFC frequency discrimination task (same as Group 1, except that two rather than five interleaved tracks of 100 trials were used). The "Intensity" Group (n = 12) performed two blocks (400 trials) of 2I-2AFC intensity discrimination (same as Group 3, but with two interleaved tracks per block; data not shown), followed by four blocks (200 trials each) of frequency discrimination. The dotted line shows the data from the "Intensity" Group transposed to indicate the block number on the frequency-discrimination task. The "Intensity" Group showed no advantage in frequency discrimination for having performed a different perceptual judgment using the same procedure.

Supplementary Note (pdf 42K)
Quantifying procedural and perceptual components of learning.

Supplementary Methods (pdf 32K)

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