MND causes muscle weakness and deterioration. According to the MND Association, 80% of people with MND experience significant changes in their speech.
Six people die in the UK every day from MND and life expectancy is about 18 months. Currently there is no cure.
Yvonne’s family said it’s had a huge impact on all of them.
Her husband Orville Johnson said: “All of us have been robbed of enjoying this stage in our lives.
“You see her authenticity being slowly taken away.”
However, the AI technology has allowed the family to feel like Yvonne’s personality is back in the room.
Her daughter Kayla said the device had changed everything.
Kayla said: “When I first heard it I was really shocked because it sounded so close to her voice and took me back to how my mum used to be.
“It felt like my mum was there in a sense.”
Yvonne and Orville also used the device to renew their vows for their 25th wedding anniversary.
During the ceremony Yvonne used her AI voice to recite her vows to her friends and family.
Reflecting on what that meant to the family, Orville said: “That was just really amazing, it was like, that’s Yvonne, that’s how she sounds, that’s her.”