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Grades 6–8 · Organisms

How does attention help one thing stand out?

A room can contain a voice, a page of writing and a sudden sound at the same time. These sources do not all receive equal processing. Selective attention helps give some information priority, making it more likely to guide perception, memory or action when processing capacity is limited.

O108 visual explanationThe supplied snapshot prioritizes voice. All three inputs remain present. Green routes indicate illustrative priority, not measured brain activity or a guaranteed winner. Interacting networks can be influenced by goals, incoming events, and experience; unattended processing is not assumed to be zero.Attention changes which information has priorityGoals, incoming signals and experience influence selectionA current goal biases processingVoicePageSudden soundInteracting networksPerception + actionOther information is still present; selection is not all-or-none.

In the diagramAttention changes which information has priorityGoals, incoming signals and experience influence selectionA current goal biases processingVoicePageSudden soundInteracting networksPerception + actionOther information is still present; selection is not all-or-none.

Goals and sudden events can shift priority among inputs; other information can still be processed.

A goal can influence that priority. While listening for a particular voice, features related to that voice can receive more processing. While reading, the words may become more prominent instead. Attention involves interactions among sensory regions and networks that help guide selection. It is not one gate at a single point in the brain.

Incoming events matter too. A sudden sound or appearance can draw attention away from a current goal. Previous experience can also make a feature especially likely to attract attention. Goal-driven and incoming influences interact; there is no rule that the loudest event or the chosen goal always wins.

Information outside the current focus is not necessarily switched off. Some unattended features can still be processed, and the amount depends on the task and conditions. Attention can shift as a task changes, so selection is flexible rather than permanent.

About this explanation

Starting knowledge: Know that senses supply information and that brains process many signals.

Sources

  • National Institute of Mental Health — Attention · RDoC construct
  • Anderson, Laurent and Yantis · Proceedings of the National Academy of Sciences — Value-driven attentional capture
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