Exposure to arousal-inducing sounds facilitates visual search

Area of Science:

• Cognitive Psychology
• Auditory Neuroscience
• Perceptual Science

Background:

• Affective stimuli can enhance perception and attention by increasing alertness and vigilance.
• Evidence regarding the specific impact of affective sounds on perception and attention is limited.
• The role of auditory-induced arousal in modulating visual attention requires further investigation.

Purpose of the Study:

• To investigate whether arousal induced by task-irrelevant auditory stimuli can modulate attention during a visual search task.
• To examine the effect of auditory-induced arousal on visual search performance, particularly for targets of varying salience.
• To explore the potential alerting function of the auditory system in visual attention.

Main Methods:

• Two experiments were conducted using a visual search task.
• Participants performed the visual search with and without preceding auditory cues.
• Auditory cues varied in arousal levels, and visual search performance (search time, search slope) was measured.

Main Results:

• Participants were faster at locating high-salient targets compared to low-salient targets.
• Search times and search slopes significantly decreased with increasing auditory-induced arousal when searching for low-salient targets.
• Stimulus arousal was found to modulate the alerting effect.

Conclusions:

• Arousal induced by sounds can facilitate attention in a subsequent visual search, particularly for less salient targets.
• This finding supports the alerting function of the auditory system, demonstrating an auditory-phasic alerting effect on visual attention.
• Affective sounds influence visual attention, indicating the integration of affective information during perceptual processing.