“It is the real reason why I want to be an actor,” she said.
“Because I want the world to know that it is a real person and that the world can see the real life side of you.”
Alzheimer, 65, has made an annual living as a professional actress, appearing in films such as The Piano Teacher, The Manchurian Candidate and The Girl With the Dragon Tattoo.
“My biggest passion is acting,” she told The Irish News at the Edinburgh International Film Festival last year.
“I’ve been acting since I was 11 years old, and that’s been my biggest passion.
I want this film to be the start of something new for me.”
Ms Alzheim said she was grateful for the support she had received from fellow actors, including her former colleague Helen Hunt.
“She has always been a real supporter and I have been lucky enough to work with her on several films,” she added.
Alzheim was born in Edinburgh and grew up in the area of the city, where she said she had been involved in arts education for many years.
She had been taught to play the violin by her parents, who were also actors, and later started singing.
“The first time I sang I had to go back to the theatre, but I got so good I was able to continue to sing,” she recalled.
“When I started to get more involved in singing, it was a huge step forward for me and I would have never got there without that support.”
Alsberg told The Independent she had always been interested in acting, but never considered it to be her life’s ambition.
“That’s when I realised I wanted to be able to do something and I wanted my own film,” she explained.
“To see this film is a huge honour for me.
I have never been to an event where you see all the other actors around the room.
I’ve been to every single film ever since I started.
It’s like a real community and everyone’s been so supportive.”
Alicia Berenson, who played the character in the film, said she “really appreciated the support” she received from the community.
“We had to ask for so much from her, from the people around her, to be like her and to make her feel like she belongs.
She was the first person to say, ‘Thank you so much’,” Ms Berenness said.”
It’s really amazing how the community has embraced her, how they have been so accepting.
They’ve said, ‘We’ve never seen you before.
Are you an actress?’
And she said, yes, I am.'”
The film, The Woman, will be shown in cinemas across the country on Friday.
The first trailer was released on Wednesday and the film has already been nominated for two Academy Awards.
Alsborg’s family are expecting the news to be very positive for their daughter, who is currently being treated at the Alzheimer’s Hospital in Edinburgh.
“Her family is so excited, because she has been through so much and she has got so much to be proud of,” Ms Barenson said.
She added: “It’s been really important for her to be there and the other patients in the hospital, because they’re so lucky to have her.”
Alizberg said the film was an important step in her journey, and she was confident it would “change people’s lives”.
“We’re here because we love the work and we love to be part of it,” she stated.
“If people want to come and see it, they will.”