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. 2014 Apr 15;4:4687. doi: 10.1038/srep04687

Figure 3. Average within-subject variability of the CSF test of the untrained and trained children and untrained adults.

Figure 3

The within-subject variability in the CSF test was defined as the standard error of the reversal points (contrast in dB) in each staircase. The average within-subject variability of the CSF test was averaged across subjects and spatial frequencies. The blue bar shows results from the untrained children, the purple bar shows results from the trained children, and the red bar shows results from the adults. ‘*' represents p < 0.05 by a two-tailed Independent Samples t-test. Error bars represent standard errors of the variability of the CSF test across subjects.