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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 information.

Depth Perception and Spatial Vision

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

Association Areas of the Cortex

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

Visual Agnosia

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...

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Related Experiment Video

Updated: Jun 13, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Visual field map size constrains working memory precision.

Nathan Tardiff¹, Xingyu Ding², Xiao-Jing Wang^2,3

¹Department of Psychology, New York University, New York University, 6 Washington Place, New York, NY 10003, USA.

Biorxiv : the Preprint Server for Biology

|June 12, 2026

Summary

This summary is machine-generated.

Larger brain maps in visual and parietal cortex correlate with better spatial working memory precision. This suggests brain area size, not just neural connections, impacts memory capacity.

More Related Videos

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Published on: December 8, 2023

Related Experiment Videos

Last Updated: Jun 13, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Published on: December 8, 2023

Area of Science:

Neuroscience
Cognitive Psychology
Neuroimaging

Background:

Individual differences in working memory significantly impact cognitive abilities and real-world outcomes.
The underlying neurobiological mechanisms driving these individual differences in working memory remain largely unknown.

Purpose of the Study:

To investigate whether the precision of spatial working memory is associated with the cortical surface area of retinotopically organized maps.
To test the hypothesis that larger visual field maps lead to more precise working memory.

Main Methods:

Assessed working memory precision in human subjects using a memory-guided saccade task.
Utilized functional magnetic resonance imaging (fMRI) to map retinotopically organized visual, parietal, and frontal cortical areas.
Employed neural network models to simulate working memory and test underlying mechanisms.

Main Results:

Found a positive correlation between larger cortical surface area in primary visual cortex and parietal cortex and enhanced working memory precision.
Neural network simulations demonstrated that larger networks exhibit reduced memory error.
Attributed the error reduction in larger networks to a decrease in memory-perturbing noise.

Conclusions:

Cortical surface area, particularly in visual and parietal regions, is a significant factor influencing spatial working memory precision.
The findings suggest a 'pure size effect' where larger neural networks (and by extension, brain areas) can achieve greater memory precision.
This research provides novel neurobiological insights into the mechanisms underlying individual differences in working memory.