The human brain consumes more energy during intense mental work

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Neuroimaging studies confirm that engaging in intense mental work and cognitive tasks significantly increases the brain's metabolic demands, specifically elevating glucose consumption and regional oxygen uptake.

The analysis

The claim states that the human brain consumes more energy during intense mental work. Paper 1 demonstrates an association between task performance and increased glucose consumption, and Paper 9 shows that mental tasks increase metabolic demands and cerebral oxygen content in the prefrontal cortex. The retrieved papers directly support the claim with strong neuroimaging evidence.

Evidence for · 2

Reconfiguration of functional brain networks and metabolic cost converge during task performance

Recorded source metadata

A. Hahn, M. Breakspear, L. Rischka, W. Wadsak, G. M. Godbersen, V. Pichler, P. Michenthaler, T. Vanicek, M. Hacker, S. Kasper, R. Lanzenberger, L. Cocchi. Reconfiguration of functional brain networks and metabolic cost converge during task performance. 2020. https://doi.org/10.7554/eLife.52443

Paper 1 demonstrates that task engagement and complex cognitive task performance elicit a marked increase in glucose consumption and functional brain network reorganization.

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More for · 1

Enhanced cerebral oxygenation during mental and physical activity in older adults is unaltered by amnestic mild cognitive impairment

Recorded source metadata

Stephanie Elbanna, Christopher Cortez, Elaina Smith, Jewelia Rattanavong, Sarah M Ross, Geoffrey P Kline, April Wiechmann, Hannah Dyson, Robert T. Mallet, Xiangrong Shi. Enhanced cerebral oxygenation during mental and physical activity in older adults is unaltered by amnestic mild cognitive impairment. 2025. https://doi.org/10.3389/fphys.2025.1535045

Paper 9 shows that mental arithmetic challenges increase metabolic demands and oxygen content in the prefrontal cortex.

Source citation format

The paper trail · every fact has a biography

first checked31 Jul 2026

judged → SUPPORTED · 8631 Jul 2026

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