dorsal/arxiv
View SchemaFractal Rigidity in Migraine
| Authors | Miroslaw Latka, Marta Glaubic-Latka, Dariusz Latka, Bruce J. West |
|---|---|
| Categories | |
| ArXiv ID | physics/0301055 |
| URL | https://arxiv.org/abs/physics/0301055 |
| DOI | 10.1016/S0960-0779(03)00440-5 |
Abstract
We study the middle cerebral artery blood flow velocity (MCAfv) in humans using transcranial Doppler ultrasonography (TCD). Scaling properties of time series of the axial flow velocity averaged over a cardiac beat interval may be characterized by two exponents. The short time scaling exponent (STSE) determines the statistical properties of fluctuations of blood flow velocities in short-time intervals while the Hurst exponent describes the long-term fractal properties. In many migraineurs the value of the STSE is significantly reduced and may approach that of the Hurst exponent. This change in dynamical properties reflects the significant loss of short-term adaptability and the overall hyperexcitability of the underlying cerebral blood flow control system. We call this effect fractal rigidity.
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"abstract": "We study the middle cerebral artery blood flow velocity (MCAfv) in humans\nusing transcranial Doppler ultrasonography (TCD). Scaling properties of time\nseries of the axial flow velocity averaged over a cardiac beat interval may be\ncharacterized by two exponents. The short time scaling exponent (STSE)\ndetermines the statistical properties of fluctuations of blood flow velocities\nin short-time intervals while the Hurst exponent describes the long-term\nfractal properties. In many migraineurs the value of the STSE is significantly\nreduced and may approach that of the Hurst exponent. This change in dynamical\nproperties reflects the significant loss of short-term adaptability and the\noverall hyperexcitability of the underlying cerebral blood flow control system.\nWe call this effect fractal rigidity.",
"arxiv_id": "physics/0301055",
"authors": [
"Miroslaw Latka",
"Marta Glaubic-Latka",
"Dariusz Latka",
"Bruce J. West"
],
"categories": [
"physics.bio-ph",
"physics.med-ph",
"q-bio"
],
"doi": "10.1016/S0960-0779(03)00440-5",
"title": "Fractal Rigidity in Migraine",
"url": "https://arxiv.org/abs/physics/0301055"
},
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