Palmer stars in Warm Bodies as a human survivor of a zombie plague, who finds herself falling in love with a mumble-mouthed zombie called R (Nicholas Hoult).
In an interview with Buzzine Film, the actress said her initial fears about the project were relieved soon after shooting commenced.
"I was initially very intimidated about the idea that I drive the movie with the dialogue," she recalled. "R can't really express himself verbally, so he's limited to grunts and groans, but Nicholas Hoult is such a phenomenal actor that he was able to really give me so much to work with."
Palmer went on to say: "He was very expressive with his eyes and his body language was amazing, and I felt like he was speaking volumes without actually opening his mouth and saying any words. That's just a testament to the talent that he is."
The 26-year-old Australian actress also compared Warm Bodies to The Twilight Saga and The Hunger Games.
"I think we're really embracing the comparisons to the other [genre] movies," she explained. "Hunger Games and Twilight are obviously hugely successful franchises, but it is our own film.
"It's very edgy and it's different, and I think at the core of what this story is, it's really about how love can heal us and love breathes life back into people. That is what I think the true story of Warm Bodies is."
Warm Bodies is now playing in the US and UK. Watch a trailer below: