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Related Experiment Video

Updated: Nov 19, 2025

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Phasic pupillary responses modulate object-based attentional prioritization.

Sean R O'Bryan¹, Miranda Scolari²

¹Department of Psychological Sciences, Texas Tech University, MS 2051, Lubbock, TX, 79409, USA.

Attention, Perception & Psychophysics

|January 28, 2021

Summary

This summary is machine-generated.

Object-based attention (OBA) is voluntarily controlled, not obligatory. This study links OBA to the locus coeruleus-norepinephrine (LC-NE) system, suggesting norepinephrine modulates attentional strategies.

Keywords:

Attentional prioritization Object-based attention Psychophysics Pupillometry Space-based attention

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Last Updated: Nov 19, 2025

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

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Published on: March 18, 2019

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Published on: January 23, 2017

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Area of Science:

Cognitive Neuroscience
Psychology
Neurobiology

Background:

Object-based attention (OBA) selects entire objects even when only a part is cued.
A key question is whether OBA is an automatic response or under voluntary control.

Purpose of the Study:

To investigate if object-based attention (OBA) is voluntarily controlled.
To examine the role of the locus coeruleus-norepinephrine (LC-NE) system in OBA.

Main Methods:

Used a two-rectangle paradigm with healthy participants (N=36).
Manipulated cue reliability to influence voluntary space-based attention (SBA).
Measured LC-NE activity via phasic pupillary responses to assess top-down attention.

Main Results:

Object selection occurred when behaviorally beneficial and with high top-down attention.
Phasic pupillary responses indicated LC-NE activity correlated with attentional demands.
Results support voluntary control of OBA.

Conclusions:

Object-based attention (OBA) is under voluntary control.
Phasic norepinephrine release in the locus coeruleus-norepinephrine (LC-NE) system may modulate attentional strategy.