Figure 3.

(A) There was a great deal of overlap between Expert 1 and non-experts in terms of spindle duration (Cohen's d = 0.14), but less overlap with Expert 2 (Cohen's d = 0.85) or between Expert 2 and non-experts (Cohen's d = 0.63). Spindle duration of automatically detected spindles were generally shorter in duration than Expert 1 (Cohen's d = 1.12), Expert 2 (Cohen's d = 0.57), or non-experts (Cohen's d = 0.91). Spindle duration among visual identification methods (B–D) and between automatic and visual detection (E–G) were all highly inter-correlated (all p < 0.05).