The trial of a husband accused of murdering his wife as they slept in a camper van has heard he killed her while he dreamt she was an intruder.
Christine Thomas, 57, was killed in Aberporth, Ceredigion, in July 2008.
Swansea Crown Court heard Brian Thomas, 59, of Neath, accepts he killed her but says he has a sleep disorder which had been triggered by "boy racer activity".
Jurors have been told they can reach a verdict of not guilty or of not guilty by reason of insanity.
Prosecuting barrister Paul Thomas QC, in his opening words to the jury on Tuesday morning, described the case as "highly unusual".
He described how Mr Thomas killed his wife, his childhood sweetheart, because he had dreamt she was a man who had broken into their motor home.
The court was told Mr Thomas's disorder meant he was not in control of his actions when he strangled his partner of 40 years. - bbc
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