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Updated: May 31, 2026

Real-time Analysis of Gut-brain Neural Communication: Cortex wide Calcium Dynamics in Response to Intestinal Glucose Stimulation
Published on: December 29, 2023
Brain energy consumption induced by electrical stimulation promotes systemic glucose uptake
Ferdinand Binkofski1, Michaela Loebig, Kamila Jauch-Chara
1Department of Neurology, University of Lübeck, Lübeck, Germany.
Transcranial direct current stimulation (tDCS) can deplete brain energy, impacting glucose homeostasis and stress hormones. This suggests brain stimulation may offer non-pharmacological benefits for metabolic disorders.
Area of Science:
- Neuroscience
- Metabolic Regulation
- Neuroendocrinology
Background:
- Transcranial brain stimulation is used for neuropsychiatric disorders.
- Brain stimulation can affect systemic metabolic regulation via neuronal and neurohormonal feedback loops.
- Hypothalamic ATP-sensitive potassium channels are key in glucose homeostasis.
Purpose of the Study:
- To investigate if transcranial direct current stimulation (tDCS) causes neuronal energy depletion.
- To determine the effect of tDCS on systemic glucose homeostasis and related neuroendocrine mediators.
Main Methods:
- 15 healthy male volunteers in a crossover design.
- Anodal tDCS versus sham stimulation to increase neuronal excitation.
- Cerebral energy consumption measured by ³¹phosphorus magnetic resonance spectroscopy.
- Systemic glucose uptake assessed by glucose clamp; neurohormonal stress axes measured.
Main Results:
- Anodal tDCS led to neuronal energy depletion, confirmed by ³¹phosphorus magnetic resonance spectroscopy.
- tDCS-induced cerebral energy consumption improved systemic glucose tolerance.
- tDCS reduced the activity of neurohormonal stress axes.
Conclusions:
- Transcranial brain stimulation influences local neuronal activity and downstream metabolic systems.
- tDCS demonstrates beneficial effects on metabolic features.
- Brain stimulation may be a promising non-pharmacological therapy for metabolic disturbances in neuropsychiatric diseases.
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