Most Followed Neuroscientist: The Effects of AI on Your Brain

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Apr 6, 2026

Emily McDonald, neuroscientist and science communicator known as M on the Brain, studies how the brain constructs reality and rewires habits. She explores how AI can dull critical thinking, how the brain filters opportunity via the reticular activating system, why discipline is nervous-system regulation that boosts attraction, and how complaining and curated inputs reshape perception.

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INSIGHT

Brain Constructs Reality Through Filtering

Your brain constructs your conscious reality by filtering ~11 million bits/sec down to ~50, so what you notice depends on how your brain is wired.
The kitten stripe study showed early sensory exposure programs perception, so unseen opportunities may be right in front of you if your brain isn't primed.

ADVICE

Build Self Trust By Following Through

Build self-trust by following through on commitments to yourself; discipline equals nervous-system regulation, not forceful control.
Emily explains people sense reliability biologically through synced brainwaves and chemosignals, making discipline attractive.

INSIGHT

We Literally Sync Nervous Systems With Others

Brainwave synchronization and airborne chemical signals let us feel others' states, so social groups shape nervous-system states.
Studies show one monkey's brain simulates eating when watching another, and humans sense stress left behind in rooms.

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