Related Experiment Video
Updated: Feb 17, 2026
13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
20.5K
Perceptual integration rapidly activates dorsal visual pathway to guide local processing in early visual areas
Ling Liu1,2,3, Fan Wang4, Ke Zhou5,6
1School of Psychological and Cognitive Sciences, Peking University, Beijing, China.
Plos Biology
|December 1, 2017
Summary
The dorsal visual pathway rapidly integrates visual elements for object recognition, with the anterior intraparietal sulcus initiating this process faster than previously thought. This pathway guides early visual processing for efficient perception.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- Perceptual integration, grouping local elements into objects, is crucial but challenging in noisy conditions.
- The ventral visual pathway is known for object recognition, modulating sensory areas with high-level information.
- Emerging evidence implicates the dorsal visual pathway in perceptual integration, but its spatiotemporal dynamics are unclear.
Purpose of the Study:
- To investigate the whole-brain fine spatiotemporal neuronal dynamics of perceptual integration.
- To dissociate the time-resolved neuronal response tracking perceptual grouping using magnetoencephalography (MEG).
- To clarify the role of the dorsal visual pathway in rapid perceptual integration.
Main Methods:
- Magnetoencephalography (MEG) recordings were used to capture brain activity.
- A temporal response function (TRF) approach was employed to analyze time-resolved neuronal responses.
- Neuronal activity was correlated with the perceptual grouping task.
Main Results:
- Perceptual integration involves rapid dorsal visual pathway responses, occurring faster than the ventral pathway.
- The anterior intraparietal sulcus (IPS) responded first (within 100 ms), with activity backpropagating to early visual areas (EVAs).
- IPS activity causally modulated EVA responses, even when global form was task-irrelevant, and this pattern disappeared if global form was not perceived.
Conclusions:
- The dorsal visual pathway plays a crucial role in perceptual integration.
- It rapidly extracts a global object template within 100 ms to guide local sensory processing.
- This mechanism efficiently resolves ambiguities in visual input, challenging previous hierarchical models.
Related Concept Videos
01:24Vision
60.4K
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.
60.4K
01:20Parallel Processing
791
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...
791
01:26Visual System
1.9K
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
1.9K
01:14Motor and Sensory Areas of the Cortex
7.8K
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....
7.8K
01:21Association Areas of the Cortex
9.6K
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,...
9.6K
01:15Auditory Pathway
7.6K
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
7.6K