It could be that human pheromones act together with visual signals to influence behavior.

The drive was cut back, so we could get good visual signals.

All those complex visual signals require a lot of processing power, far more than would be needed if just points were being processed.

They use visual signals to communicate with other members of the same species.

And the visual signal doesn't seem to be coming through at all.

Trains must stop here to wait for visual or verbal signal to proceed.

Most people are unable to initiate pursuit without a moving visual signal.

The majority of visual signals throughout the 1970s and 1980s were white or red incandescent lights.

"Didn't you ever look at the visual signals we harvested?"

For example, visual signals are sent to the brain about the body's position in relation to its surroundings.