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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Vision Res. 2014 Jul 8;101:167–176. doi: 10.1016/j.visres.2014.06.015

Figure 1.

Figure 1

A schematic figure showing samples of trigram stimuli. We varied letter size (shown along the horizontal dimension in the figure) to assess the letter size threshold for a given nominal letter spacing (shown along the vertical dimension in the figure). Because the nominal letter spacing is specified in multiples of letter size (x-height), the absolute spacing between the letters change as letter size varies. In a given block of trials, only one nominal letter spacing was tested but letters were presented at five letter sizes.