Study of complex hemodynamic fluctuations in the human brain by simultaneous near-infrared spectro-imaging and functional magnetic resonance imaging

Vladislav Yu. Toronov; Maria-Angela Franceschini; Sergio Fantini; Andrew G. Webb; Enrico Gratton

doi:10.1117/12.532950

28 May 2004 Study of complex hemodynamic fluctuations in the human brain by simultaneous near-infrared spectro-imaging and functional magnetic resonance imaging

Vladislav Yu. Toronov, Maria-Angela Franceschini, Sergio Fantini, Andrew G. Webb, Enrico Gratton

Author Affiliations +

Proceedings Volume 5330, Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics; (2004) https://doi.org/10.1117/12.532950
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

In this paper we discuss temporal and spatial patterns of brain hemodynamics under rest and motor stimulation conditions obtained by functional magnetic resonance imaging and simultaneous fast multi-channel near-infrared spectro-imaging in the human motor cortex. Our data indicate that the main difference between the brain hemodynamics under the repetitive stimulation and the rest conditions is not in the appearance of hemoglobin concentration changes during the stimulations (since fluctuations occur at rest as well), but in their more regular, i.e. phase-synchronous with the stimulation behavior.

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Vladislav Yu. Toronov, Maria-Angela Franceschini, Sergio Fantini, Andrew G. Webb, and Enrico Gratton "Study of complex hemodynamic fluctuations in the human brain by simultaneous near-infrared spectro-imaging and functional magnetic resonance imaging", Proc. SPIE 5330, Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics, (28 May 2004); https://doi.org/10.1117/12.532950

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KEYWORDS

Hemodynamics

Brain

Functional magnetic resonance imaging

Near infrared spectroscopy

Brain mapping

Neuroimaging

Statistical analysis

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