Fig. 1: Paradigm and hypotheses for the psychophysics experiment.
From: Neural and computational mechanisms underlying one-shot perceptual learning in humans
a Paradigm. Top: Trial-level timing; images were presented for 2 s, followed by a verbal response. Bottom: Block structure; pre- and post Mooney images were shuffled to prevent low-level priming effects. Border colors reflect paired Mooney-grayscale images and were not shown to subjects. b For each subject, a given Mooney image and its paired grayscale image are presented in one of three conditions (original, catch, manipulated). c Grayscale image manipulation conditions in each experiment. d Image identification accuracy for pre- and post-Mooney images in original and catch trials. Data from Experiment 1 (n = 30 subjects), reproduced from Fig. 2a. Asterisks denote statistically significant interaction effects in a two-way repeated measures ANOVA, ***: p < 0.001. The central white dot of each violin plot represents the median, the gray vertical bar represents the interquartile range (25th to 75th percentiles), the violin plot bounds represent the minima and maxima, and the plot curvature represents the density estimate of the data distribution. Source data are provided as a Source Data file in Fig. 2. e Hypotheses. Grayscale image manipulation may have no effect on learning (H1), degrade learning without abolishing it (H2), or abolish learning (H3). All images adapted from the Caltech 10170 and Pascal VOC71 databases.
