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Related Experiment Video

Updated: Jun 20, 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

Covert attention effects on spatial resolution.

Marisa Carrasco¹, Yaffa Yeshurun

¹Department of Psychology & Center for Neural Science, New York University, New York, NY, USA. marisa.carrasco@nyu.edu

Progress in Brain Research

|September 8, 2009

Summary

This summary is machine-generated.

Both endogenous and exogenous spatial covert attention improve visual detail resolution. Exogenous attention enhances resolution even when it hinders performance, unlike endogenous attention.

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Area of Science:

Cognitive Psychology
Neuroscience
Visual Perception

Background:

Spatial covert attention, a mechanism for prioritizing visual information processing, exists in endogenous and exogenous forms.
Understanding the distinct characteristics and effects of these attention types is crucial for visual neuroscience.

Purpose of the Study:

To review the characteristics of endogenous and exogenous spatial covert attention.
To examine how these attention types influence spatial resolution across various visual tasks.

Main Methods:

Literature review of studies on endogenous and exogenous spatial covert attention.
Analysis of spatial resolution in tasks including acuity, visual search, and texture segmentation.

Main Results:

Both endogenous and exogenous attention enhance spatial resolution at attended locations.
Enhanced resolution from exogenous attention persists even when it impairs task performance.
Attention enhances resolution at the attended location at the cost of reduced resolution at unattended locations.

Conclusions:

Spatial covert attention, in both its endogenous and exogenous forms, significantly modulates spatial resolution.
The findings highlight distinct impacts of exogenous attention, particularly its performance-independent enhancement of resolution.