The Grueneberg ganglion, composed of about 500 neurons, is an alarm pheromone sensor. In this video, an experiment involving the removal of neurons from the Grueneberg ganglion region in certain lab mice showed a marked change in behavior around alarm pheromones.

Posted in 'How mice smell fear' at sciencenews.org/view/generic/id/35672/title/How_mice_smell_fear

Also 'FOR KIDS: Mice sense each other's fear' at sciencenews.org/view/generic/id/36209/title/FOR_KIDS_Mice_sense_each_others_fear

Source: Science/AAAS

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…