When Daddy goes deaf: How men really DON'T hear babies crying while asleep

Many an exhausted mum has suspected her husband of pretending to be asleep when baby cries in the middle of the night.
But the man really is firmly in the Land of Nod, say researchers.
While a baby's sobbing is the number one sound most likely to wake up a woman, it doesn't even figure in the male top ten.
Car alarms, howling wind and a buzzing fly are the prime noises guaranteed to disturb a man's sleep.
The huge differences between the sexes were revealed by tests measuring subconscious brain activity.
They found that a woman's maternal instincts kick in at the sound of a baby's cries - whether or not she is actually a mother.
It was also discovered that women are more likely than men to find their sleep disturbed and men are more likely to be able to go back to sleep once they have been woken up.
The tests were carried out at the MindLab institution as part of research into the importance of a good night's sleep.
MindLab recreated a 'sleep environment' for each volunteer before playing sounds and measuring the results on an EEG - electroencephalography - machine to measure how regular brain activity is disturbed by them.