Changes in some indices of the cardiovascular system in different mental tasks |
| |
Authors: | O V Martynova A O Roik G A Ivanitsky |
| |
Institution: | 1.Institute of Higher Nervous Activity and Neurophysiology,Russian Academy of Sciences,Moscow,Russia |
| |
Abstract: | In order to study the effects of the type of mental activity on the function of the cardiovascular system in humans, the following
indices were used: the heart rate (HR), RR interval, variation magnitude (VM), systolic wave amplitude (SWA), and pulse wave
transit time (PWTT). These indices were recorded when the subjects solved verbal-logical or spatial mental tasks. The HR was
substantially increased during solving of the spatial tasks as compared to solving of the verbal-logical tasks, whereas the
SWA showed the opposite changes. The latencies of the performance of the tasks of various types were similar in the subjects;
therefore, the changes in the autonomic indices did not depend on the difficulties of the mental tasks. They rather depended
on specific features of the mental processes involved in the performance of the tasks of different types. Thus, changes in
the HR and the decreased SWA, which was related to elevated blood pressure, represent the effect of the sympathetic nervous
system on the heart function during solving verbal-logical tasks. Our data demonstrate that the HR and blood pressure can
be used as additional indices for the development of new techniques for assessment of different types of mental processes
together with the indices of electrical brain activity. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|