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Episode 88 · How the Brain Works
Why Focus Needs Brakes
When focus feels either flat or frantic, your brain may need better signal balance. Glutamate is the brain's main excitatory messenger.
The Science
- Curtis, Phillis and Watkins (1960), The Journal of Physiology: glutamate directly excites neurons, the first clear evidence it is the brain's main excitatory transmitter.
- Go signals work best with brakes; unbalanced excitation can turn useful signal into noise.
- High-output focus needs recovery, so excitation and inhibition have to stay balanced.
- Focus feeling flat or frantic can be a balance problem.
The Protocol
- Steer the accelerator: work in one clear sprint.
- Then give the brain a real downshift.
- Close extra tabs, dim the room, and stop adding stimulation at night.
- Notice the signal, name the mechanism, and change one input before autopilot.
One-page summary
Right-click → Save As to download. Or scan the QR code in the corner to come back here from print.
The science beat (5-sec loop)
Sources
- Curtis DR, Phillis JW, Watkins JC. The chemical excitation of spinal neurones by certain acidic amino acids. The Journal of Physiology. 1960;150:656-682.
Educational content only. Not medical advice.
Also on Instagram: @neurosensebrain
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