A Harry Potter fan can recall every word in every chapter of J.K Rowling’s much-loved books due to a rare brain condition that gives her an extraordinary memory.

Rebecca Sharrock, 26, is just one of 80 people in the world with Highly Superior Autobiographical Memory (HSAM), a condition which allows her to remember every day of her life.

Ms Sharrock, from Queensland, has offered a small insight into just how powerful her memory is in a new video where she rattles off huge Harry Potter passages word-for-word at random.

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Rebecca Sharrock, 25, has a rare brain condition which gives her extraordinary powers of recall. She can remember every word of all seven Harry Potter books

In the 60 Minutes video Ms Sharrock is asked to recite chapter 17 of the first book in the Harry Potter series, The Philosophers Stone.

She falters for a second before launching into a word-perfect recital of the chapter.

‘Chapter 17 is the man with two faces,’ she begins.

‘And it starts on “It was Quirrel. You? gasped Harry”.’

Ms Sharrock’s memory is so acute she even goes on to point out minor differences in dialogue between the book and the movie.

Ms Sharrock put her memory to the test on 60 Minutes, rattling off a word-perfect recital of a random Harry Potter chapter

Ms Sharrock started memorising the books as a child as a way to keep her 'buzzing' mind at ease

Ms Sharrock's mother Janet said: 'When she had nightmares as a child, to take her mind off it we got her to just start reciting Harry Potter from chapter one'

Ms Sharrock’s remarkable memory is both a blessing and a curse and she said she initially learnt the Harry Potter books as a way to keep her mind occupied.

Her mother Janet said: 'When she had nightmares as a child, to take her mind off it we got her to just start reciting Harry Potter from chapter one.

Ms Sharrock added: 'At night, I have to sleep with the radio on and a soft light. If it’s too dark or quiet my mind just chatters away with all these memories and I can’t sleep.'

WHAT IS HIGHLY SUPERIOR AUTOBIOGRAPHICAL MEMORY? HSAM, or hyperthymesia, is a brain condition which gives people extraordinary powers of recall. Those with HSAM can remember nearly every detail of every day of their lives. It is a poorly understood and rare condition - only 80 cases of hyperthymesia have been found worldwide. Some studies have found differences in certain regions of the brain that could account for hyperthmesia. It is also believed that certain life events and experiences can contribute to the disorder's development. Source: Psychology Today Advertisement

'I remember my mum Janet placing me in the drivers seat of the car and taking a picture of me when I was 12 days old,' Ms Sharrock said in an interview last October.

‘That’s my earliest memory.

'When I relive memories, the emotions come back. So if it’s something from when I was younger it’s like my mind is an adult but my emotions are the age that I was then'.

The condition means Ms Sharrock can recall minor and irrelevant events as if they happened just moments ago

Ms Sharrock was not aware she had HSAM until 2011 after her mother Janet Barnes, 51, was watching an episode of 60 Minutes that showed HSAM patients recalling their memories as part of a Californian study.

'I just knew for sure that that was what Becky has too - she relives her memories so vividly that sometimes she’ll answer a question I haven’t asked just because she’s thinking about a conversation we had years previously.'

'Becky had been diagnosed with autism and obsessive compulsive disorder as a teenager, so we thought her memory might be something to do with that,' Mrs Barnes said.

'Finding out about HSAM has been such a positive experience for Becky. I’ve seen her blossom. She’s been more positive and able to do things independently, which has been excellent.’

Ms Sharrock can recall all of her memories starting from when she was just 12 days old