Functional Stochastic Resonance in the Human Brain: Noise Induced Sensitization of Baroreflex System

Ichiro Hidaka, Daichi Nozaki, and Yoshiharu Yamamoto
Phys. Rev. Lett. 85, 3740 – Published 23 October 2000
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We demonstrate experimentally that noise can enhance the homeostatic function in the human blood pressure regulatory system. The results show that the compensatory heart rate response to the weak periodic signal introduced at the venous blood pressure receptor is optimized by adding noise to the arterial blood pressure receptor. We conclude that this functional stochastic resonance most likely results from the interaction of noise with signal in the brain stem, where the neuronal inputs from these two different receptors first join together.

  • Received 1 May 2000


©2000 American Physical Society

Authors & Affiliations

Ichiro Hidaka1, Daichi Nozaki2, and Yoshiharu Yamamoto1,*

  • 1Educational Physiology Laboratory, Graduate School of Education, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • 2Department of Motor Dysfunction, Research Institute of National Rehabilitation Center for the Disabled, 4-1 Namiki, Tokorozawa, Saitama 359-8555, Japan

  • *Corresponding author. Email address:

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Vol. 85, Iss. 17 — 23 October 2000

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