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![an illustration of the classic rotating snakes illusion, made up of many concentric circles with alternating stripes layered on top of each other](https://cdn.mos.cms.futurecdn.net/z78DAFmPAVeD6jmzUYXvin-320-80.jpg)
32 optical illusions and why they trick your brain
By Patrick Pester published
Artists and scientists have been creating optical illusions for centuries. Here are 32 mind-bending examples that prove you can't always trust what your eyes are telling you.
![A woman in an orange jumpsuit sits behind prison bars sitting on a bed and holding a plate of food](https://cdn.mos.cms.futurecdn.net/YLu3KDW5P72iJX83787NBF-320-80.jpg)
'When you improve nutrition, you reduce violence': Psychologist Kimberley Wilson on working in Europe's largest women's prison
By Sascha Pare published
Kimberley Wilson has worked in prisons and with patients from all walks of life. Her years of providing therapy suggest improved nutrition could be key to mental health and brain function.
![Microscopic image of two blobs of cells merging together; the one on the right is stained bright green](https://cdn.mos.cms.futurecdn.net/X9Y3T9TRsFknAyrk2vqWVZ-320-80.jpg)
In a 1st, scientist grow mini brains with functional blood-brain barriers
By Nicoletta Lanese published
New "assembloids" grown from stem cells offer a tiny, working model of the blood-brain barrier.
![A 3D illustration of a pink human brain on a pale pink background](https://cdn.mos.cms.futurecdn.net/qcokETg5fGJJzWc33ZPid9-320-80.jpg)
The enigmatic 'brain microbiome' could play a role in neurological disease
By Janosch Heller published
Some research suggests the brain has its own microbiome, but scientists don't know much about it.
![Colorful, rainbow colored rendering of thousands of neurons from a brain sample that have been assembled in a map](https://cdn.mos.cms.futurecdn.net/nuudduwUTdHGpwEXjry3S7-320-80.jpg)
New 3D map charted with Google AI reveals 'mysterious but beautiful' slice of human brain
By Sneha Khedkar published
Harvard and Google researchers have collaborated to map a tiny fragment of an adult human brain in unprecedented detail.
![An example of the neon color spreading illusion. Here, four black circles are besides each other in a square shape. Each circle contains a series of progressively smaller circles within it. In the center there appears to be a patch of green in the shape of a circle. The background of the whole image is white.](https://cdn.mos.cms.futurecdn.net/g5X6MXYkszYSkVqoKhwejA-320-80.png)
Optical illusion reveals key brain rule that governs consciousness
By Emily Cooke published
A study of mice starts to unravel how the brain gets tricked by this kind of optical illusion, and it gives clues about how visual perception works.
![Two side-by-side MRI scans of the two halves of a human brain shows structures deep in the middle of the brain highlighted in different colors](https://cdn.mos.cms.futurecdn.net/TLMd92fExz78n3V43tDRYk-320-80.jpg)
Super-detailed map of brain cells that keep us awake could improve our understanding of consciousness
By Nicoletta Lanese published
A new map of a brain network that sustains wakefulness in humans could help improve our understanding of consciousness.
![Microscopic image of mouse and rat brain cells shows cells labeled in red and blue on dark background](https://cdn.mos.cms.futurecdn.net/mNHyUPjviPo7YdKKSFHruD-320-80.png)
'Frankenstein' mice with brain cells from rats raised in the lab
By Stephanie Pappas published
In recent experiments, rat brain cells filled in for lost neurons in mouse brains, raising new possibilities for growing donor tissues across species.
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