A recent study published by the Massachusetts Institute of Technology (MIT) divided participants into three groups: one using ChatGPT to write, one using a search engine, and one using no external tools at all. The results showed that those who relied solely on ChatGPT experienced a significant decrease in theta and alpha brainwaves, which are associated with memory and creativity. More importantly, even after switching back to writing on their own, this group’s brain activity did not immediately recover. Another MIT study also found similar findings: young customer service representatives who overly relied on AI showed significantly worse judgment than experienced employees.
The human brain is actually highly plastic: frequently used brain areas become stronger with use, while less-used areas degrade. For example, experienced taxi drivers, who frequently memorize routes, have their brain areas for spatial memory particularly developed. However, those who rely on GPS for navigation over the long term will gradually experience a decline in spatial memory. The brain is like a muscle: use it or lose it.
Data from the MIT study further indicates that the group who wrote entirely on their own experienced enhanced interactions between multiple brain networks, increasing cognitive load, and ultimately enhancing their brain control and creativity. Conversely, those who relied solely on AI experienced decreased neural connectivity, fewer creative associations, and a decline in brain power, essentially rusting their brain engine.
The research team warns that habitual reliance on AI is equivalent to degenerating the neural pathways responsible for deep thinking, much like atrophying muscles after prolonged inactivity.
The widespread use of AI is an inevitable trend, and its use is unavoidable. However, how can we effectively utilize it without causing brain degeneration? I have three suggestions:
- Think first, reference later: When writing a report, it’s best to create a personal outline first, then use AI to reference and revise information. Don’t leave all the thinking to the AI.
- AI is an assistant, not a ghostwriter: Use AI to verify and assist, rather than simply copying its answers.
- Take handwritten notes: Try to stick to writing by hand to activate brain areas related to language and memory.
The MIT research reminds us that while AI can improve efficiency, allowing it to replace our own thinking can lead to brain degeneration. The wise approach is to use AI as a helper to handle mundane tasks, freeing up mental energy and time to pursue the creativity and judgment that only the human brain can achieve.
So, remember: while AI can save time, over-reliance on it can dull and degenerate our brains. AI is merely an assistant; our brains are the true “boss”.
Written by: Dr. William Chui
Originally posted on: am730
Translated by: Cheuk Long Chan




