Cited by 213Advanced MRI Techniques and ApplicationsOptical Imaging and Spectroscopy TechniquesAdvanced Neuroimaging Techniques and Applications

Nonlinear coupling between cerebral blood flow, oxygen consumption, and ATP production in human visual cortex.

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Lin, Ai-Ling, Fox, Peter T., Hardies, Jean, Duong, Timothy Q., Gao, Jia-Hong·2010·Proceedings of the National Academy of Sciences

Abstract

The purpose of this study was to investigate activation-induced hypermetabolism and hyperemia by using a multifrequency (4, 8, and 16 Hz) reversing-checkerboard visual stimulation paradigm. Specifically, we sought to (i) quantify the relative contributions of the oxidative and nonoxidative metabolic pathways in meeting the increased energy demands [i.e., ATP production (J(ATP))] of task-induced neuronal activation and (ii) determine whether task-induced cerebral blood flow (CBF) augmentation was driven by oxidative or nonoxidative metabolic pathways. Focal increases in CBF, cerebral metabolic rate of oxygen (CMRO(2); i.e., index of aerobic metabolism), and lactate production (J(Lac); i.e., index of anaerobic metabolism) were measured by using physiologically quantitative MRI and spectroscopy methods. Task-induced increases in J(ATP) were small (12.2-16.7%) at all stimulation frequencies and were generated by aerobic metabolism (approximately 98%), with %DeltaJ(ATP) being linearly correlated with the percentage change in CMRO(2) (r = 1.00, P < 0.001). In contrast, task-induced increases in CBF were large (51.7-65.1%) and negatively correlated with the percentage change in CMRO(2) (r = -0.64, P = 0.024), but positively correlated with %DeltaJ(Lac) (r = 0.91, P < 0.001). These results indicate that (i) the energy demand of task-induced brain activation is small (approximately 15%) relative to the hyperemic response (approximately 60%), (ii) this energy demand is met through oxidative metabolism, and (iii) the CBF response is mediated by factors other than oxygen demand.

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  • Neuronal activation is associated with a small energy demand: an 8-12% increase in ATP production with visual stimulation in awake human visual cortex and a 5% increase in metabolic rate with somatosensory stimulation in awake somatosensory cortex.

    “While fractional changes in neuronal firing frequency are directly proportional to changes in energy use [53], the energy demand associated with neuronal activation appears to be small: there is only a 8–12% increase in ATP production with visual stimulation in the awake human visual cortex [54], and a 5% increase in metabolic rate with somatosensory stimulation in the awake somatosensory cortex [”

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  1. [29]Gjedde A. In: Handbook of Neurochemistry and Molecular Neurobiology Brain Energetics. Integration of Molecular and cellular Processes. Lajtha A, Gibson GE, editors. Heidelberg: Springer; 2007. pp. 343–400. [[Google Scholar](https://scholar.google.com/scholar_lookup?title=Handbook%20of%20Neurochemistry%20and%20Molecular%20Neurobiology%20Brain%20Energetics.%20Integration%20of%20Molecular%20and%20cellular%20Processes&author=A%20Gjedde&publication_year=2007&)]
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Authors
Lin, A.-L., Fox, P. T., Hardies, J., Duong, T. Q., & Gao, J.-H.
Affiliations
  • The University of Texas at San Antonio Health Science Center (US)
  • University of Chicago (US)
Venue
Proceedings of the National Academy of Sciences
Published
2010-04-19
Volume
107
Issue
18
Pages
8446-8451
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2092930162
Cited by
213
References
48
Citations by year
2026: 8 · 2025: 5 · 2024: 10 · 2023: 11 · 2022: 17 · 2021: 11 · 2020: 10 · 2019: 8 · 2018: 11 · 2017: 18 · 2016: 16 · 2015: 15 · 2014: 25 · 2013: 10 · 2012: 14
FWCI
12.22
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Minnesota
  • National Institutes of Health
  • University of Texas Health Science Center at San Antonio
  • National Institute of Neurological Disorders and Stroke (R01NS045879)
  • National Center for Research Resources (M01RR01346, M01RR001346)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
cerebral blood flow, cerebral oxygen consumption, ATP production, lactic acid production, visual cortex, hyperemia, oxidative metabolism, energy demand, neurovascular coupling, brain energy metabolism
MeSH terms
Adenosine Triphosphate, Adult, Aerobiosis, Anaerobiosis, Cerebrovascular Circulation, Female, Humans, Magnetic Resonance Imaging, Male, Magnetic Resonance Spectroscopy, Oxidation-Reduction, Oxygen Consumption, Visual Cortex, Nonlinear Dynamics, Young Adult

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