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Working Memory

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...

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Related Experiment Video

Updated: Sep 9, 2025

Eye Tracking During Visually Situated Language Comprehension: Flexibility and Limitations in Uncovering Visual Context Effects

Eye Tracking During Visually Situated Language Comprehension: Flexibility and Limitations in Uncovering Visual Context Effects

Published on: November 30, 2018

Item-based Parsing of Dynamic Scenes in a Combined Attentional Tracking and Working Memory Task.

Piotr P Styrkowiec^1,2,3, William X Q Ngiam^1,4,3, Will Epstein¹

¹Institute of Mind and Biology, The University of Chicago.

Journal of Cognitive Neuroscience

|September 2, 2025

Summary

Visual working memory (WM) and multiple-object tracking (MOT) share a common indexing mechanism. The brain

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Last Updated: Sep 9, 2025

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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

Area of Science:

Cognitive Neuroscience
Visual Perception
Human Cognition

Background:

Human visual processing has limitations in tracking multiple moving objects and storing information in visual working memory (WM).
The way the visual system parses scenes into representational units may underlie these performance limits.
Investigating a common item-based indexing mechanism for both multiple-object tracking (MOT) and WM is crucial for understanding these limitations.

Purpose of the Study:

To explore whether multiple-object tracking (MOT) and visual working memory (WM) utilize a shared item-based indexing mechanism.
To investigate the relationship between the contralateral delay activity (CDA) and concurrent MOT and WM tasks.
To determine if the CDA reflects the number of tracked objects or the amount of information to be remembered.

Main Methods:

Measuring the contralateral delay activity (CDA), an event-related potential reflecting item-based load.
Designing a combined WM and MOT task where participants tracked and/or remembered visual information.
Conducting two experiments manipulating the number of tracked objects (moving or static) and the number of to-be-remembered colors.

Main Results:

CDA amplitudes were primarily influenced by the number of tracked objects, not the number of colors to be remembered.
When objects were static, CDA amplitudes did reflect the load of remembered colors.
The tracking task, rather than the memory task, largely determined CDA load.

Conclusions:

The findings suggest that MOT and WM rely on a common item-based indexing mechanism.
The parsing of visual scenes into item-based representations is a key mechanism in WM operation.
This research has implications for cognitive models of visual information representation and theories like 'fingers of instantiation' and 'object files'.