The UK's BBC Radio 4 looks Inside the Brain of Gerald Scarfe on Friday, January 26th at 11am, in an exploration of the creative mind.

Gerald Scarfe's drawings have intrigued and alarmed for more than fifty years but where do his ideas come from? Professor Vincent Walsh of the Institute of Cognitive Neuroscience has a theory he wants to pursue. Vincent is an expert in the workings of the visual brain; he thinks that two specific areas may be talking to each other in an unexpected way, resulting in recognisable faces being mixed up with recognisable objects, hence Mrs Thatcher as an axe, a handbag, and even a shark.

Now, cartoonist and neuroscientist are going to meet. "I for one would be fascinated to know what's going on in my brain..." said Scarfe, best known with Pink Floyd fans for his work on The Wall, as well as earlier creations for the band's tours.

The show was originally broadcast last July (but certainly missed by us), so our thanks to Stuart Barstow for the info. For more details, and how to listen to the show (including on demand after it has aired), visit BBC.co.uk.