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. Author manuscript; available in PMC: 2017 Jul 11.
Published in final edited form as: Curr Biol. 2016 Jun 16;26(13):1669–1676. doi: 10.1016/j.cub.2016.04.065

Figure 1.

Figure 1

Stimuli and neural modeling. (A) Synthetic faces varied in identity, skin tone, and gender (see Fig S1A). Behavioral ratings of pair-wise face similarity were used to obtain the three-dimensional perceptual similarity space via multi-dimensional scaling. (B) An example series of five stimulus presentations are plotted as a path through the perceptual similarity space. (C) A “prior” can be calculated as a function of the temporal integration parameter (μ) applied to the sequence of previous stimuli, and plotted as a point in the perceptual space. The prior will be shifted to a varying degree by each subsequent stimulus. Stimuli are integrated over longer durations for larger values of μ, and the prior stays close to the center of the stimulus space. For smaller values of μ the prior more closely tracks the path of presented stimuli. See also Figure S1.