Cardiorespiratory Dynamic Response to Mental Stress: A Multivariate Time-Frequency Analysis

Figure 9

Median instantaneous power for TF spectra 𝑆_RR(𝑡,𝑓), 𝑆_RR,𝑟(𝑡,𝑓), and 𝑆_RR/𝑟(𝑡,𝑓) in the LF (a) and HF (b) bands. The standard error is shaded. The bars below each subplot indicate the time instances of significant differences between RD and the tasks.

(a)

(b)