Skip to main content

Table 1 Measurements before and after the fatigue-inducing mental task sessions

From: Effect of mental fatigue on the central nervous system: an electroencephalography study

  0-back test 2-back test
  Before After Before After
VAS for fatigue     
General fatigue 15.8 ± 11.2 53.2 ± 24.2a 14.5 ± 10.4 47.8 ± 23.0a
Mental fatigue 15.2 ± 9.9 50.9 ± 27.5a 13.2 ± 10.0 47.0 ± 26.0a
Cognitive tasks     
Error rate of Task 1 2.4 ± 1.9 3.4 ± 3.3 2.6 ± 2.1 3.7 ± 3.7
Error rate of Task 2 4.4 ± 3.3 6.8 ± 4.9a 5.1 ± 4.0 7.1 ± 5.2a
ECG     
LF/HF 2.8 ± 5.2 3.7 ± 2.4 1.7 ± 1.0 4.2 ± 3.8b
%LF (%) 32.3 ± 16.7 43.2 ± 17.8 34.8 ± 14.9 40.0 ± 23.2
%HF (%) 32.0 ± 25.0 18.3 ± 13.6b 26.2 ± 14.1 18.2 ± 17.2
Saliva cortisol (nmol/l) 9.4 ± 4.5 9.4 ± 4.5 8.7 ± 3.3 7.2 ± 3.3
  1. Data are presented as mean ± SD.
  2. VAS, visual analogue scale; LF, low-frequency power; HF high-frequencypower.
  3. aP < 0.01,bP < 0.05, significantly different from thecorresponding values before the fatigue-inducing mental task sessions (pairedt-test).