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Location cuing and response time distributions in visual attention.

Lawrence R Gottlob¹

¹Department of Psychology, University of Kentucky, Lexington, Kentucky 40506-0044, USA. gottlob@uky.edu

Perception & Psychophysics

|April 9, 2005

Summary

Visual attention allocation was studied using peripheral and central cues. Findings suggest attention shifts involve a time-delayed information uptake, impacting response times.

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Area of Science:

Cognitive Psychology
Neuroscience
Visual Perception

Background:

Understanding how visual attention is allocated is crucial for explaining cognitive processing.
Previous research highlights the role of cues in directing attention, but the temporal dynamics remain debated.

Purpose of the Study:

To investigate the temporal dynamics of visual attention allocation.
To differentiate the effects of peripheral versus central cues on attention.
To test predictions of sequential sampling models.

Main Methods:

Two experiments were conducted with 24 participants each.
Peripheral and central cues were presented with 90% validity.
Four-choice target identification task with varying stimulus onset asynchronies (SOAs).
Response time distributions analyzed using ex-Gaussian parameters.

Main Results:

A decrease in the mean of the Gaussian component was observed with increasing cue-target SOA.
This effect was consistent across both peripheral and central cueing conditions.
Results indicate a time axis translation of response time distributions.

Conclusions:

The findings support sequential sampling models of attention.
A variable delay in information uptake appears to underlie attentional shifts.
This delay mechanism is consistent across different cueing paradigms.

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