Chris O�Leary, o cara da dor, falando sobre a aten��o � propaganda:
Think of our Attentional System as a radio tuner. This tuner has a special property -- it can monitor multiple radio frequencies at once (let's say 20, although in reality it's probably greater).
Due to the limitations of this system, only one frequency can be in focus at a particular moment and have our conscious attention. The other 19 frequencies are being monitored but are playing softly in the background. However, whenever one of those frequencies shifts from transmitting Noise to transmitting a relevant Signal, our Attentional System notices this and shifts focus to it.
