Data collection times.

<p>Data collection times.</p

Attention network task performance.

<p>Attention network task performance.</p

A matrix of plots illustrating the agreement of HRV between three time points.

<p>The upper right panels consist of scatterplots with identity line (45° line though the origin). The lower left panels consist of Bland-Altman plots with confidence bounds and bias (dotted red line) and the horizontal black line passing through the origin. The confidence bounds show the mean of the difference between time points plus or minus twice of the standard deviation of the difference.</p

The relationship between ANT scores and HRV.

<p>The relationship between ANT scores and HRV.</p

The relationship between orienting and HRV.

<p>Plots demonstrate the relationship between orienting and HRV at baseline (3A) after sleep (3B) and after sleep deprivation (3C). The blue histogram shows the posterior distribution for the correlation <i>p</i> with a 95% highest density interval (HDI). The scatterplots illustrate the relationships between these two variables, with superimposed posterior predictive distributions. The larger light blue ellipse shows the 95% highest density region while with smaller dark blue ellipse shows the 50% highest density region. The histograms on the top x-axes and right y-axes show the marginal distributions of the data. HDI = Highest density interval.</p

Main effects and interactions of group and measurement period on heart rate variability, heart rate, and ANT measures.

<p>Line graphs illustrate means and 95% confidence intervals for log-transformed HF-HRV (1A), HR (1B), mean reaction time (1C), Orienting t-values (1D), Alerting t-values (1E), and Conflict t-values (1F). Error bars represent 95% confidence intervals, which are corrected to remove between-subject variability. M1 = Morning 1; N1 = Night 1, M2 = Morning 2.</p