Attention capture in birds performing an auditory streaming task.

Area of Science:

• Auditory neuroscience
• Animal behavior
• Cognitive psychology

Background:

• Investigating neural mechanisms of auditory processing in complex acoustic environments using animal models.
• Uncertainty regarding functional similarity between animal and human auditory attention in competing auditory scenes.

Purpose of the Study:

• To investigate the effects of attention capture in birds using an objective auditory streaming paradigm.
• To understand the interplay of top-down and bottom-up attention in auditory processing.

Main Methods:

• Utilized modified classical ABAB… patterned pure tone sequences in a trained bird auditory streaming task.
• Birds were trained to attend to a target stream and respond to deviants, while assessing attention capture by background deviants.

Main Results:

• Birds exhibited a buildup of streaming similar to subjective paradigms when no background deviant was present.
• Involuntary attention switches occurred due to background deviants, particularly unpredictable ones, impairing performance.
• Increased salience of background deviants reset the auditory streaming buildup process, while sequential predictability aided recovery.

Conclusions:

• Birds exhibit involuntary attention capture by salient and unpredictable background sounds, impacting auditory stream segregation.
• This study provides the first evidence in behaving animals of the perceptual consequences of combined top-down and bottom-up attention effects.
• Findings suggest limitations in attentional control in animals when faced with competing auditory stimuli.