24/06/2026
Wow. This has absolutely nothing to do with dogs (or perhaps it does, considering how similar many biological learning processes are across species!), and may be Intersting to all those canine behaviourists and trainers out there. I had to share this when studying about magnesium in our diet.
A tiny magnesium ion sits inside one of the brain’s most important learning receptors, called the NMDA receptor. Most of the time, it acts like a plug, blocking the channel from opening.
For learning to occur, two things must happen at the same time:
• Glutamate (the brain’s main excitatory neurotransmitter) must bind to the receptor.
• The neuron must already be active.
When both happen together, the magnesium ion is pushed out, allowing calcium to enter the cell. This triggers a series of events that strengthen the connection between neurons the biological basis of learning and memory.
Magnesium therefore acts as a gatekeeper, helping the brain strengthen meaningful connections while filtering out background noise.
It also plays an important role in preventing excessive brain excitation. When magnesium levels are low, NMDA receptors can become easier to activate, lowering the threshold for neuronal excitation. While this mechanism is well established, it’s important not to overstate the clinical implications. The science clearly supports magnesium’s role in NMDA receptor function, but claims that magnesium alone can “fix” conditions such as anxiety are far more complex.
It’s remarkable to think that a single magnesium ion is helping regulate learning and memory in your brain right now.
Keep taking your magnesium folks!
References
Jahr, C.E. & Stevens, C.F. (1990) Voltage dependence of NMDA-activated macroscopic conductances predicted by single-channel kinetics. Journal of Neuroscience, 10(9), 3178–3182.
Hou, J., Wang, X., Zhang, K. & Wang, Y. (2020) Magnesium and neurological disorders: A review of molecular mechanisms and therapeutic potential. Molecular Neurobiology, 57, 3629–3647.