A dozen trained canines had their brains scanned as owners delivered various verbal cues.

To indicate that we haven't finished yet but are just gathering our thoughts, we therefore conventionally rely on verbal cues - those umms and erms and so on.

Owners of canines find it very important to have a canine that can learn visual and verbal cues that they show.

Next they formulated visual or auditory images when prompted with verbal cues such as a game of tennis or a telephone ringing.

For example visual priming works best with visual cues and verbal priming works best with verbal cues.