Auditory Environments Reshape Mental Imagery by Altering Emotional Sentiment and Perceived Spatiotemporal Speed

A new study reveals that while music makes mental imagery more positive and vivid, traffic noise increases the speed at which we imagine moving through a scene.

By: AXL Media

Published: Apr 3, 2026, 6:58 AM EDT

Source: Information for this report was sourced from Humanities and Social Sciences Communications

The Cognitive Influence of Background Auditory Stimuli

New research has demonstrated that background sounds do more than simply fill an environment; they actively recalibrate the human capacity for directed mental imagery. This cognitive function, which is essential for language comprehension and future planning, was tested by researchers using undergraduate students to observe how specific sounds alter the "inner eye." The study differentiated between undirected mind-wandering and intentional, goal-directed imagery, finding that both music and traffic noise can fundamentally change the clarity and emotional weight of a visualized scene. According to the research team, these auditory inputs act as a framework that shapes the structural properties of human thought during complex cognitive tasks.

Music as a Catalyst for Vividness and Positive Emotion

The investigation confirmed that music serves as a powerful modulator of mental imagery, significantly increasing the vividness of imagined content compared to silence. Participants who listened to musical pieces during the experiment reported imagery that was not only more detailed but also substantially more positive in its emotional sentiment. This enhancement of "mental vision" suggests that music provides a rhythmic and harmonic structure that the brain uses to build more robust internal representations. However, the study also noted that when traffic noise was introduced alongside music, the positive emotional effects were noticeably dampened, indicating that harsh environmental sounds can interfere with the therapeutic or uplifting qualities of a musical backdrop.

The Spatiotemporal Effects of Urban Traffic Noise

In a unique exploration of how noise impacts the perception of movement, the study found that traffic noise uniquely influences the speed at which people imagine traveling through a mental scene. While music led to greater imagined distances and longer travel times, traffic noise caused participants to perceive their mental movement as faster. This suggests that the chaotic and high-energy nature of city sounds, such as car horns and combustion engines, translates into a sense of urgency in the mind’s eye. Unlike music, which tended to slow down the imagined speed, the presence of traffic noise forced a more rapid spatiotemporal progression, highlighting how urban environments may unintentiona...