Descriptive data and daytime symptoms in GSCs, PIPs with EDS and PIPs without EDS.

<p>Female value is in %; other values are in mean ± SD;</p><p>Note: BMI = Body Mass Index; PSQI = Pittsburgh Sleep Quality Index; FSS = Flinders Fatigue Scale; BDI = Beck Depression Inventory-I; SAI = State Anxiety Inventory; TAI = Trait Anxiety Inventory.</p>a<p>Kruskal-Wallis Test.</p>b<p>Tukey Test;</p>c<p>PIPs without EDS vs. GCSs.</p>d<p>PIPs with EDS vs. GCSs.</p

The flow chart of experimental process: (A, the four cue conditions; B, three target conditions; C, an example of the procedure).

<p>RT = reaction time.</p

Scatter-plots demonstrating correlations for MSLT versus overall RT in good sleeper controls (left panel) and primary insomnia patients (right panel).

<p>RT = reaction time; MSLT = multiple sleep latency test.</p

Multiple Linear Regression Models predicting overall RT in primary insomnia patients.

<p>Note: RT = reaction time; BDI = Beck Depression Inventory-I; SAI = State Anxiety Inventory; MSLT = multiple sleep latency test.</p><p>Model 1: unadjusted;</p><p>Model 2: adjusted for gender, age and education years;</p><p>Model 3: adjusted for gender, age, education years, BDI and TAI;</p><p>Model 4: adjusted for gender, age, education years, BDI, TAI, sleep latency, total sleep time and sleep efficiency.</p

PSG sleep data in GSCs, PIPs with EDS and PIPs without EDS (mean ± SD).

<p>Note: SOL = sleep onset latency; TIB = time in bed; TST = total sleep time; WASO = wake time after sleep onset; SE = sleep efficiency; REM = rapid eye movement Latency; MA index = microarousal index;</p>a<p>Kruskal-Wallis Test.</p>b<p>Tukey Test.</p>c<p>PIPs without EDS vs. GCSs.</p>d<p>PIPs without EDS vs. PIPs with EDS.</p