You wake up to your partner telling you that you had an entire conversation with someone named Bob last night, or your roommate mentions you were giving what sounded like a presentation in your sleep.

Sleep talking can be a slightly strange experience — whether you’re the one doing the midnight chattering or you’re sharing a bed with someone who is talking mid-snooze. But what is sleep talking and ...

Sleep talking (also know in the sleep field as "somnliloquy") is a sleep disorder that involves unconscious talking during sleep. Sleep talking varies in its content and presentation, ranging from ...

You’ve likely experienced it – waking to find your partner urgently informing you that you spent half the night having an animated conversation with no one. Or perhaps you’ve been the one awakened by ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

A reader asked, after reading my last post on 11 reasons a good night's sleep is so important: What is happening in the brain when kids talk while sound asleep? (I am usually asleep when this happens, ...