Subitizing capacities as a function of viewing eccentricity were generally flat for unscaled (Experiment 1) and scaled (Experiment 2) stimulus sizes.

<p>Subitizing capacities as a function of viewing eccentricity were generally flat for unscaled (Experiment 1) and scaled (Experiment 2) stimulus sizes.</p

Mean response as a function of element number for stimuli with unscaled (Experiment 1) and scaled (Experiment 2) sizes.

<p>Response accuracy decreased as viewing eccentricity increased in Experiment 1, but not in Experiment 2. Response accuracy also decreased with increasing element number.</p

Example stimuli.

<p>Fixate on the white square and enumerate the number of gratings in the periphery. Small gratings are harder to enumerate than large gratings. Sizes were not scaled in Experiment 1 (left) but were scaled in Experiment 2 (right) according to a cortical magnification factor. There are 8 gratings in both of these panels.</p

Mean variation coefficients (standard deviation/response) as a function of element number for stimuli with unscaled (Experiment 1) and scaled (Experiment 2) sizes.

<p>Variation coefficients increased as viewing eccentricity increased in Experiment 1, but not in Experiment 2.</p

Mean normalized response (mean response/element number) as a function of element number for stimuli with unscaled (Experiment 1) and scaled (Experiment 2) sizes.

<p>Deviation from 1 (dashed line) represents inaccurate responses. Above 1 represents overestimation while below 1 represents underestimation.</p

Proportion correct as a function of element number for stimuli with unscaled (Experiment 1) and scaled (Experiment 2) sizes.

<p>Enumeration errors increased as viewing eccentricity increased in Experiment 1, but not in Experiment 2.</p