Figure 6
From: Psychological and physiological evidence for an initial ‘Rough Sketch’ calculation of personal space

Model fitting of discomfort ratings data. Average ratings of discomfort (y axis) as a function of personal space size (in %, on the x axis) to either human (left panel) or avatar (right panel) intruders. In both panels, the data is shown as a white dotted line. Brackets indicate one standard error. Three possible functions were tested to model the average fall-off of comfort ratings, including exponential (blue), logarithmic (green), and a power law (red). The power law function produced the best fit.