Decrements in heart rate variability during memory search.
Heart-rate variability (HRV) was recorded from subjects as they rested or performed two memory-search tasks with different memory-set sizes. Results indicated that all the estimates of HRV were considerably greater during resting periods than during the task but only the mid-frequency band (0.1 Hz component) reflected the changes in memory-set size by a more pronounced decrement with the higher load. Subjective mental-effort ratings collected for the task periods also reflected the different memory loadings but did not correlate with HRV measures.
Redondo
M
M
Departament of Psychology, University of La Coruña, Spain.
Del Valle-Inclán
F
F
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology