Some people simply visualize rock, the thought of it, its essence, and that's sufficient.

"Most people visualize, in their mind's eye, so to speak," he continued.

Few people can visualise the size and nature of new civil engineeering works or their impact on landscape before they happen.

In human navigation people visualize different routes in their minds to plan how to get from one place to another.

Voters see tall politicians as better suited for leadership, according to a survey of how people visualise their leaders.

"He could see above what most people could see, and visualise how things should be."

These photos can help people visualize the way sea level rise may affect our communities in the future.

Most people do not visualize the action - dead metaphors normally go unnoticed.

Maybe, but picture a ski lodge and people usually visualize somebody in a leg cast reading a book by the fire.

"It's the only game that normal, everyday people can visualize themselves doing at the highest level," he said.