One in seven people report seeing a dead relative in their sleep.

NUI Galway is carrying out a study on unusual sleep experiences - including sleep paralysis.

Researchers are hoping to talk to a thousand people about their sleep patterns in the hope of demystifying some of the more unusual behaviour.

Ever see scary things in your sleep?#TuneIn at 1 @TodayFMNews@nuigalway wants to hear from you for a #SleepStudy pic.twitter.com/DooO4LrHOa

— Susan Keogh (@suskeogh) April 13, 2016

 
It will also look how people's emotions and lifestyles affect what kind of a night's sleep you get.

Susan Keogh has been speaking to Dr Jonathan Egan from the School of Psychology at NUI Galway:

She began by asking him what sleep paralysis is:

If you want to participate in the study you can do so here