| Title | Decrements in heart rate variability during memory search. | ||
| Author | Redondo, M; Del Valle-Inclan, F | ||
| Journal | Int J Psychophysiol | Publication Year/Month | 1992-Jul |
| PMID | 1522030 | PMCID | -N/A- |
| Affiliation | 1.Departament of Psychology, University of La Coruna, Spain. | ||
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.