"The Teenage Brain"
- irenechiandetti
- Oct 31, 2025
- 3 min read
A Symphony in Progress: The Teenage Brain

Inside the Teenage Mind
For years, people believed that brain development ended at puberty — but Jensen shows that’s far from true:
“The frontal lobes, where decisions are made
and impulses controlled, are not yet fully mature.”
That means we think, feel, and react differently from adults — not because we’re irrational, but because our brains are still learning to balance logic and emotion.
Here’s what struck me most:
The prefrontal cortex is still “in training”
This is the part of the brain that helps us plan and control impulses.
Jensen explains that until myelination (the insulation that speeds up brain communication) is complete, we may be impulsive or distracted — but also incredibly creative and intuitive.
Our brains are pruning and rewiring
During adolescence, the brain eliminates weak connections and strengthens the ones we use most.
That means everything we do — studying, playing music, building friendships — is shaping the architecture of our future selves.
Sleep is a secret superpower

I learned that sleep isn’t wasted time: it’s when our brains consolidate memories and re-organize what we’ve learned.
Skipping sleep isn’t strength — it’s like pulling the plug on our ability to remember.
Emotions and stress are real brain chemistry
Stress hormones, mood swings, even that “chaotic” feeling — they all have a neurological basis.
Understanding this helped me feel more aware and less guilty when emotions take over.
What this book taught me
This quote, written for parents, actually made me think about us:
“Until their brains are fully wired, parents
have to serve as their teenagers’ frontal lobes.”
Maybe we don’t need to be “controlled” — we need to be understood. We’re learning to navigate our own minds while our brains are literally learning to navigate themselves.
Here’s what I took away:
🎵 Experiences shape us, literally. Every memory, song, and emotion leaves a physical trace in our brains. We’re not just becoming someone — we’re wiring who we’ll be.
😴 Sleep is self-care for the brain. Now I see sleep as part of training my mind, not laziness. It’s when my brain repairs itself and strengthens what I’ve learned.
📱 Multitasking is a myth. Jensen explains that our brains can’t actually process multiple complex tasks at once. Since reading her book, I’ve started focusing on one thing at a time — and it feels calmer and more real.
💬 Emotions are not weakness. When we feel “too much,” it’s not failure — it’s biology. Our limbic system (emotions) reacts faster than our prefrontal cortex (control). It’s not instability, it’s neurological humanity.
Why I recommend it
This book is about us — how we think, feel, love, and grow. It explains the science behind our moods and behaviors without judging them, turning curiosity into compassion.
And it perfectly fits the NeuroVibes spirit: connecting music, emotion, and neuroscience. Jensen shows that the teenage brain’s plasticity is a gift — a chance to learn, adapt, and express ourselves in new ways.
In a sense, we’re like musical instruments being tuned: sometimes out of harmony, but full of potential.
In short
What I loved:
It explains neuroscience with clarity and warmth
It helps us understand our moods and choices
It turns teenage chaos into curiosity
Who it’s for:
Anyone who wants to understand themselves better — teens, parents, teachers, or anyone who believes the brain is more than biology.
Final thoughts
After reading The Teenage Brain, I feel a little kinder toward my mind. I understand myself better — the distractions, the moods, the intensity — and I know it’s not “wrong". It’s just my brain growing.
And maybe...
...knowing that is already a way to take care of it.
Source: Frances E. Jensen, The Teenage Brain; Il Cervello Degli Adolescenti


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