%0 Journal Article %T The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task %A Harunobu Usui %A Yusuke Nishida %J Archive of "PLoS ONE". %D 2017 %R 10.1371/journal.pone.0182611 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5555691/