Specifically, the time match-up between audio and visual signals.
She, however, recalled sending Mr. Ordóñez a flotilla of visual signals.
People who are deaf or hearing impaired require visual signals, while those with visual impairments require acoustic signals.
The researchers suggest that this interaction between vocal and visual signals affected the evolution of the cowbird's songs.
Eugene Michael Simuni, 18, of Midwood explored protein transmittance of visual signals to the brain, in a biochemistry project.
Aircraft landings are guided by radio and radar and by visual signals from the deck.
"It makes us want to revisit visual signals by elephants for elephants," said Ms. Smet.
So it is possible, the researchers say, that the polarized light would serve as visual signals among squid that enemies would not be able to detect.
As the name suggests, the test driver is given audio and visual signals to alert them that they should take over driving without delay.
Suzanne Amador Kane, a physicist at Haverford College, in Pennsylvania, was thinking about visual signals by animals — mostly come-ons and warnings.
Many scientists study how animals communicate with one another through acoustic and visual signals and physical interaction.
