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1st edition

The illustrations for the first edition were created by Jack's dear friend Charlie Johnson

2nd edition

The illustrations for the second edition were created by Jack's brother: Dave Lewis

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The brain tube map is all Jack's fault

VR Consulting

Dr Jack is now providing one-on-one Sort Your Brain Out consultations with virtual reality brain training

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All illustrations in the 2nd edition were courtesy of DAVE LEWIS

Sort Your Brain Out (2nd ed.)

My younger brother David kept his artistic skills a secret from the family for most of his adult life. Of course we'd seen glimpses of this potential during early childhood years as he happily immerse himself for endless hours with paper and pencil in his bedroom, copying Nintendo art from Mario Kart and Street Fighter II game cartridges. But from secondary school onwards it seemed as if this liaison with the arts may have become a thing of the past.

It wasn't until a few years ago that our mum mistook a pencil drawing of a boot he'd drawn for a photograph. Utter disbelief ensued, with mum insisting that it couldn't possibly be a drawing because it was so realistic. And then the penny dropped: we have an artist in the family.

After asking him to do a few sketches for the new edition I was delighted with the drafts. He has an uncanny nack for taking a complex concept and imagining how to convey it in an uncomplicated fashion; with clarity and a quirky sense of humour.

I love the emotion he manages to inject into each character. Through their eyes, how they hold their limbs, wielding a masterful palette of body language to great effect. I genuinely couldn't be happier with his work and hope that it adds as much value for the readers enjoyment of the book as it has for us authors!

All illustrations in the 1st edition were courtesy of CHARLIE JOHNSON

Charlie J has a tremendous talent for knowing how to dig around in your imagination and turn it into art
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Sort Your Brain Out (1st ed.)

All the drawings in the first edition of Sort Your Brain Out were dreamed up by the lovely Charlie Johnson (one of the nicest blokes you'll ever meet) usually on the basis of a vague description of each chapter.


How he consistently managed to create exactly what we visualised in our mind's eyes with such consistency defies our comprehension.


We suspect he may have telepathic powers (despite every attempt to prove the existence of telepathy under careful scientific scrutiny failing miserably).


We are extremely grateful to him for contributing his talents to our book - it really helped us to achieve our primary aim - making it as accessible as possible.

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Turns out 3D neuroanatomy is not easy to represent on a 2D tube map

But it was fun trying. This one is from the 1st edition of Sort Your Brain Out, published in 2014.


The London Underground is a network of tube tunnels, some running deeper than others.


It occurred to us that the highly complex system of 86 billion tube lines that run through your own brain might be more easily understood if it was depicted in a familiar way.


This is a view of a brain turned sideways on with the yellow district (Occipital Lobe) at the back of the head and red district (Temporal Lobe) at the side of the head.


NB the way different lines link up the different brain stops is conceptual not literal - they are not necessarily physically linked in the brain, but work together to achieve certain functions 

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