Related Experiment Video
Updated: May 26, 2026
08:42
Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
Published on: February 8, 2020
Functional specialization of seven mouse visual cortical areas
James H Marshel1, Marina E Garrett, Ian Nauhaus
1Systems Neurobiology Laboratories, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
Neuron
|December 27, 2011
Summary
Mice visual cortex areas show specialized processing for different visual features. This research maps distinct visual processing streams in mice, potentially analogous to those in other species.
Area of Science:
- Neuroscience
- Visual Processing
- Comparative Cognition
Background:
- The mouse is a genetically tractable model organism.
- Understanding higher-order visual processing in mice is crucial for neuroscience research.
- Previous studies have not fully characterized the functional specialization of mouse visual areas.
Purpose of the Study:
- To establish the mouse as a model for high-order visual processing.
- To characterize retinotopic organization and functional specialization of mouse visual cortex.
- To identify distinct visual processing streams in the mouse brain.
Main Methods:
- Retinotopic mapping of seven visual areas in the mouse cortex.
- Characterization of functional specialization in layer 2/3 neuronal populations.
- Analysis of spatiotemporal feature encoding, including temporal and spatial frequencies, orientation, and direction selectivity.
Main Results:
- Each of the seven visual areas exhibits a distinct visuotopic representation.
- Extrastriate areas (LM, AL, RL, AM) process faster temporal and lower spatial frequencies than V1.
- V1 and PM process high spatial and low temporal frequencies, while LI processes both.
- Most extrastriate areas show increased orientation selectivity compared to V1, with AL, RL, and AM being more direction selective.
Conclusions:
- Mouse higher visual areas are functionally distinct.
- Separate groups of visual areas may specialize in motion- or pattern-related computations.
- These specialized areas may form pathways analogous to the dorsal and ventral streams found in other species.
Related Concept Videos
01:14Motor and Sensory Areas of the Cortex
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.
01:21Association 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,...
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,...
01:23Somatosensory, Motor, and Association Cortex
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 the...
01:33Somatosensation
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
01:24Vision
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.
01:26Visual System
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...