Such sacs could be used for both visual and auditory signals.
The brain "unscrambles" the auditory signals to make them recognizable as sounds.
Usually a runner will give an auditory signal, such as "Stick!"
The research team used a computer model to analyze various parts of the brain that might be involved in neural firing while processing auditory signals.
At the same time, they send an auditory signal to Clement, killing him.
It should be possible, he thought, for a gunner to work from auditory signals.
Current devices also include tone and volume controls, allowing the user to shape the auditory signal.
The island fox communicates using auditory, olfactory and visual signals.
It is believed that they may be able to detect the location of nests using auditory signals.
These included allowing blind riders, when they reached a marker, being given an auditory signal to inform them of this.