Related Experiment Video
Updated: Nov 10, 2025
07:12
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
Published on: April 11, 2025
664
Perceptual Learning beyond Perception: Mnemonic Representation in Early Visual Cortex and Intraparietal Sulcus
Ke Jia1,2,3,4,5, Ya Li6, Mengyuan Gong7
1School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China.
Summary
Perceptual learning alters how visual information is stored in working memory (WM). Training shifts WM representation from early visual areas to higher-order parietal regions, enhancing information maintenance.
Area of Science:
- Neuroscience
- Cognitive Science
- Perception and Memory
Background:
- Perceptual learning enhances stimulus discrimination.
- The impact of perceptual learning on mnemonic processing, particularly working memory (WM), is not well understood.
- Existing research highlights plasticity in perception and decision-making, but not its effect on memory representation.
Purpose of the Study:
- To investigate how perceptual learning influences working memory (WM) representation.
- To examine training-induced changes in neural processing during visual discrimination tasks.
- To determine if learning modifies the cortical locus of WM content.
Main Methods:
- Functional magnetic resonance imaging (fMRI) to decode neural patterns during WM tasks.
- Transcranial magnetic stimulation (TMS) to disrupt neural activity and assess behavioral impact.
- Orientation discrimination task training in human participants.
Main Results:
- fMRI showed orientation-specific patterns in primary visual cortex (V1) before training, but not after.
- TMS disruption of V1 caused behavioral deficits both before and after training.
- WM content was represented in the intraparietal sulcus (IPS) after training, but not before, as shown by fMRI and TMS.
Conclusions:
- Perceptual learning alters the neural representation of working memory content.
- Training shifts WM representation from sensory areas (V1) to higher-order areas (IPS).
- These findings support the sensory recruitment hypothesis and reconcile discrepancies in WM research across species.
Related Concept Videos
01:26Higher Mental Functions of Brain: Learning and Memory
1.6K
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
1.6K
01:14Motor and Sensory Areas of the Cortex
5.6K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
5.6K
01:24Somatosensory, Motor, and Association Cortex
1.4K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
1.4K
01:21Association Areas of the Cortex
7.5K
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,...
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,...
7.5K
01:24Vision
58.1K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
58.1K
01:20Parallel Processing
423
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
423