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SHIOZAWA Tomoki
Department Aoyama Gakuin University Department of Business Administration, School of Business Position Professor |
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| Language | English |
| Publication Date | 2007/03 |
| Type | Book |
| Peer Review | Peer reviewed |
| Title | A New Concept of Cerebral Autoregulation Using Mathematical Expressions. |
| Contribution Type | Collaboration |
| Publisher | Frontiers of Computetional Science (Springer-Verlag,Heiderberg) |
| Volume, Issue, Page | pp.327-331 |
| Total page number | 5 |
| Authorship | Lead author |
| Author and coauthor | *Shiozawa TY, Takada H, Miyao M. |
| Details | Summary. Stress was induced by graded head-up tilt (HUT) in 13 healthy subjects, and their beat-by-beat values of cerebral blood flow velocity (CBV) [cm s−1] and arterial blood pressure (ABP) [mmHg] were measured. Low frequency (LF: 0.07–0.2 Hz) and high frequency (HF: 0.2–0.4 Hz) transfer function gains (TFGs) [(cm s−1)/mmHg] were calculated to assess the dynamic cerebral autoregulation (DCA). By mathematically expressing the transition of DCA during the HUT, a new concept of cerebral autoregulation was discovered. This type of cerebral autoregulation rapidly leads DCA to a differen stationary state after exposure to a sudden change in the gravitational load |