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Related Experiment Video

Updated: Mar 21, 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

Target-object integration, attention distribution, and object orientation interactively modulate object-based

Shahd Al-Janabi¹, Adam S Greenberg²

¹Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, 53201, USA.

Attention, Perception & Psychophysics

|May 21, 2016

Summary

This summary is machine-generated.

Object-based attentional selection is influenced by how targets relate to objects and their orientation. Findings reveal object orientation modulates selection, especially with specific target-object integration and attention distribution.

Keywords:

Meridian effect Object-based attention Space-based attention

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Area of Science:

Cognitive Psychology
Neuroscience
Visual Attention

Background:

Attentional selection can be object-based, but its robustness varies across studies compared to spatial selection.
Factors influencing object-based selection, such as target-object integration, attention distribution, and object orientation, require further investigation.

Purpose of the Study:

To examine how target-object integration, attention distribution, and object orientation modulate object-based attentional selection.
To determine the conditions under which object-based selection is more or less robust than spatial selection.

Main Methods:

Three experiments were conducted manipulating target-object integration ('on' vs. 'of' an object), attention distribution (narrow vs. wide), and object orientation (horizontal vs. vertical).
Participants performed discrimination tasks involving targets presented in relation to objects under different attentional conditions.

Main Results:

Object-based selection was evident only when targets constituted a change 'of' an object in Experiment 1 (wide attention).
Object orientation modulated the sign of object-based selection (advantage for horizontal, cost for vertical objects).
Object-based selection was observed independent of target-object integration with narrow attention (Experiment 2) and was not modulated by orientation with exogenous attention (Experiment 3).

Conclusions:

Target-object integration, attention distribution, and object orientation interact to modulate object-based attentional selection.
The orientation of objects and the nature of attentional focus (endogenous vs. exogenous) significantly impact object-based selection.
Findings suggest complex interactions between object properties and attentional mechanisms in visual perception.