Reduced baroreflex cardiac sensitivity predicts increased cognitive performance |
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Authors: | Yasumasu Tomiya Reyes Del Paso Gustavo A Takahara Kazuo Nakashima Yasuhide |
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Institution: | First Department of Medical Technology, School of Health Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan. t-yasu@health.uoeh-u.ac.jp |
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Abstract: | Abstract This study evaluated the relationship between baroreceptor reflex sensitivity and cognitive performance. Twenty normal subjects performed the Uchida-Kraepelin test, a serial arithmetic task. Baroreceptor reflex sensitivity during a 5-min Uchida-Kraepelin test was assessed in minute periods by spectral analysis using the maximum-entropy method. During the task, baroreceptor reflex sensitivity was significantly reduced. There was an inverse between-subjects association between baroreceptor reflex sensitivity and the level of performance (number of additions completed) both at different time periods of the Uchida-Kraepelin test and during the whole task (r=-.51). This finding supports the existence of a pathway mediating mutual cardiovascular-central nervous system influences through the baroreceptors, establishing an essential mechanism facilitating adaptive reactions to stressful conditions. |
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Keywords: | Baroreceptor reflex sensitivity Cognitive functions Uchida–Kraepelin test Spectral analysis |
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