'I don't have a life': The physical and emotional toll of caregiving for a loved one

A 70-year-old woman caring for her mentally disabled husband all by herself says she doesn't have a life anymore and no longer feels like an individual.

Now, researchers at Massey University hope to measure the physical and emotional toll on caregivers looking after their loved ones.

Wendy Slieker's husband was found dead on the side of the road in Wellington's Oriental Bay.

It took almost 30 minutes for paramedics to restart his heart, and by the time he woke up he had suffered a severe brain injury from the lack of oxygen.

Researchers are looking into why patients can still have a powerful response to music even as their memory fades.