Fig. 2. Precision in the Astronauts.
Astronauts’ JNDs are plotted as histograms (little dots: distributions drawn at a bin width of 0.075) for each session and posture (x-axis). The different postures are color-coded (purple for supine, grey for sitting, green for in-space). The large dots to the left of each distribution illustrate the mean JND across all participants for a given session and posture, and the error bars are ± 1 standard deviation.