Orienting attention to sound object representations attenuates change deafness

Area of Science:

• Cognitive Psychology
• Auditory Perception
• Neuroscience

Background:

• The object-based account of attention suggests we can selectively attend to objects in short-term memory (STM).
• While visual attention to objects is well-supported, auditory attention to sound objects remains less understood.
• Prior research has not validated whether attention can be oriented to sound object representations.

Purpose of the Study:

• To investigate if attention can be directed to sound object representations in auditory STM.
• To examine the influence of orienting attention on change detection in complex auditory scenes.
• To determine if auditory object-based attention follows similar principles to visual attention.

Main Methods:

• A delayed match-to-sample task was employed with auditory scenes containing three concurrent sounds at different locations.
• A control experiment identified unambiguously segregated auditory scenes.
• Retro-cues were used to orient attention to specific sound object representations during memory retention.

Main Results:

• Orienting attention to a sound object representation via a retro-cue significantly enhanced performance in change detection.
• This enhancement in auditory change detection persisted for up to 4 seconds of memory retention.
• Performance on cued trials was superior compared to uncued trials, demonstrating the effect of selective attention.

Conclusions:

• Complex auditory scenes are rapidly parsed into distinct sound object representations.
• These sound object representations are available for top-down selective attention, similar to visual objects.
• Auditory attention can be guided to specific sound object representations, reducing 'change deafness' and supporting object-based attention principles across sensory modalities.