Effect of arithmetic mental task on short term measurement of heart rate and heart rate variability.
Purpose of the study: Heart rate (HR) and Heart rate variability (HRV) are two of the most widely known physiological measures for assessing mental workload. In this study the effect of a simple arithmetic mental task on HR and HRV in a group of ten young volunteers was investigated. Material and Me...
| Publicado en: | Archives: The International Journal of Medicine Vol. 1; no. 1; pp. 26 - 31 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Renaissance Medical Publishing
2008 Jan-Mar
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| Acceso en línea: | Ver este registro en EBSCOhost |
| Sumario: | Purpose of the study: Heart rate (HR) and Heart rate variability (HRV) are two of the most widely known physiological measures for assessing mental workload. In this study the effect of a simple arithmetic mental task on HR and HRV in a group of ten young volunteers was investigated. Material and Methods: One hundred and fifty numbers (range 0-29) were presented visually on a 14' CRT computer screen one at a time for 2 secs. One third of the numbers were asterix(*) marked.Subjects added these numbers mentally and told the sum at the end of experiment which continued for 5min. HR was recorded during 5min rest before the test and while performing the mental task. Time and frequency domain analysis were carried out. Results & Conclusions: Results showed that HR increased significantly while performing mental task with decrease in both low frequency (LF) and high frequency (HF) components. No significant changes in LF/HF ratio and time domain component were observed. The decrement in LF component during mental task may be explained as the influence of parasympathetic efferent nerves. |
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