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Related Experiment Video

Updated: May 22, 2026

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Spatial attention modulates the precedence effect.

Sam London¹, Christopher W Bishop, Lee M Miller

¹Center for Mind and Brain, University of California, Davis, CA, USA. slondon@ucdavis.edu

Journal of Experimental Psychology. Human Perception and Performance

|May 2, 2012

Summary

This summary is machine-generated.

Spatial attention significantly influences the precedence effect, altering how the brain parses acoustic information. Both voluntary and stimulus-driven attention can enhance sound object perception, with exogenous attention also potentially hindering it.

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Area of Science:

Auditory neuroscience
Perceptual psychology

Background:

Auditory spatial perception is crucial for navigation and communication.
Acoustic reflections and noise can corrupt spatial cues, but the brain employs mechanisms like the precedence effect and spatial attention to mitigate interference.
The precedence effect perceptually fuses reflections with the primary sound, while spatial attention typically modulates perception rather than initial object parsing.

Purpose of the Study:

To investigate the influence of endogenous (voluntary) and exogenous (stimulus-driven) spatial attention on the precedence effect.
To determine how attention orientation affects the precedence effect and perceptual fusion of acoustic information.

Main Methods:

Experimental manipulation of endogenous and exogenous spatial attention.
Assessment of the precedence effect under different attentional conditions.
Analysis of perceptual fusion and interference mitigation.

Main Results:

Both endogenous and exogenous spatial attention profoundly influence the precedence effect.
Both attention types enhanced perceptual fusion of sounds.
Exogenous attention, but not endogenous, was observed to hinder perceptual fusion under certain conditions.

Conclusions:

Spatial attention plays a critical role in the basic perceptual organization of the acoustic environment.
Attention modulates auditory object formation, impacting phenomena like the precedence effect.
These findings highlight the dynamic interplay between attention and auditory scene analysis.