Pixar announces Amy Poehler as star in Inside Out, from director of Up and Monsters, Inc.

The animation is set for release in summer 2015

Inside Out characters Fear, Sadness and Joy (Pixar)

Pixar has released artwork and casting details for their next feature Inside Out, from the director of Up.

The animation, which is set for release in June 2015, takes place in the mind of 11-year-old girl Riley.

Characters in the film will symbolise various emotions inside Riley's head after her family moves to San Francisco. Producers claim the film will explore the formation of memories and the way in which experiences can be altered by emotions.

Inside Out director Pete Docter - who also directed Monsters, Inc. - announced at Disney’s D23 Expo in California that actors including Amy Poehler, Phyllis Smith and Mindy Kaling would feature in major roles in the upcoming film.

Poehler, best known for her work on the comedy series Parks and Recreation, will voice Joy, while Smith and Kaling will appear respectively as Sadness and Disgust.

It was also revealed at the event that Finding Dory, the long-awaited sequel to Finding Nemo, will be released in November 2015.