Articles

Inside the thinking brain

Short reads on the brain science behind our thoughts, written by a physics teacher.

Your brain has about 86 billion nerve cells, called neurons.

In 1929 the German doctor Hans Berger recorded the first human brain waves, tiny rhythmic electrical signals measured through the scalp.

Harvard researchers used a phone app to ask thousands of people, at random moments, what they were doing and what they were thinking about.

You may have heard that a habit takes 21 days.