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Cited by 166

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Age Dependency of Changes in Cerebral Hemoglobin Oxygenation during Brain Activation: A Near-Infrared Spectroscopy Study

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Hock, Christoph, Müller-Spahn, Franz, Schuh-Hofer, Sigrid, Hofmann, Marc, Dirnagl, Ulrich, Villringer, Arno·1995·Journal of Cerebral Blood Flow & Metabolism

Abstract

We used near-infrared spectroscopy (NIRS) to study noninvasively the influence of aging on changes in the local concentration of oxygenated hemoglobin ([HbO 2]), reduced hemoglobin ([HbR]), and total hemoglobin ([HbT] = [HbR] + [HbO 2]) during activation of brain function. Young subjects ( n = 12; age, 28 ± 4 years) performing calculation tasks showed an increase in [HbO 2] [mean (arbitrary units) ± SD, 2.36 ± 1.07] and [HbT] (2.24 ± 1.13) in the frontal cortex, while [HbR] (−0.11 ± 0.48) decreased. Elderly subjects ( n = 17; age, 52 ± 10 years) showed a significantly lower mean increase ( p < 0.05) in [HbO 2] and [HbT] levels (1.21 ± 1.38 and 0.72 ± 1.41, respectively). Regression analysis supports the hypothesis of an age-dependent decline in the activation-induced local increase in [HbO 2] ( y = −0.241 x + 20.062; r = −0.431, p < 0.05) as well as [HbT] ( y = −0.346x + 22.496; r = −0.568, p < 0.05). We conclude that NIRS is a promising approach for studying changes in Hb oxygenation during brain activation in physiological aging.

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Metadata

Authors
Hock, C., Müller-Spahn, F., Schuh-Hofer, S., Hofmann, M., Dirnagl, U., & Villringer, A.
Venue
Journal of Cerebral Blood Flow & Metabolism
Published
1995-11
Volume
15
Issue
6
Pages
1103-1108
ISSN
  • 0271-678X (ISSN-L)
  • 1559-7016
OpenAlex
W1981270256
Cited by
166
References
3
FWCI
8.63
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Age Dependency of Changes in Cerebral Hemoglobin Oxygenation during Brain Activation: A Near-Infrared Spectroscopy Study. https://app.cochat.ai/papers/10.1038/jcbfm.1995.137
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Hock, C., Müller-Spahn, F., Schuh-Hofer, S., Hofmann, M., Dirnagl, U., & Villringer, A. (1995). Age Dependency of Changes in Cerebral Hemoglobin Oxygenation during Brain Activation: A Near-Infrared Spectroscopy Study. Journal of Cerebral Blood Flow & Metabolism. https://doi.org/10.1038/jcbfm.1995.137

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