Related Experiment Video
Updated: Jul 10, 2026
08:49
Visualization of Cortical Modules in Flattened Mammalian Cortices
Published on: January 22, 2018
The functional organization of the barrel cortex
1Laboratory of Sensory Processing, Brain Mind Institute, SV-BMI-LSENS, Station 15, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Neuron
|October 30, 2007
Summary
Rodent whisker pathways reveal how brain circuits and molecular mechanisms link to behavior. State-dependent processing in the barrel cortex is key to understanding sensory perception, plasticity, and learning.
Area of Science:
- Neuroscience
- Sensory processing
- Rodent models
Background:
- The whisker-to-cortex pathway in rodents is a model system for studying sensory processing.
- The primary somatosensory cortex contains a precise map (barrel cortex) for individual whisker representation.
- Sensory information processing is behavior-dependent in awake rodents.
Purpose of the Study:
- To explore the connection between molecular mechanisms, neural circuits, and behavior.
- To understand how sensory information is processed differently based on whisker-related actions.
- To investigate the role of state-dependent processing in active sensory perception and learning.
Main Methods:
- Utilizing the well-defined tactile somatosensory pathway in rodents.
- Analyzing the somatotopic map in the primary somatosensory cortex (barrel cortex).
- Observing sensory processing in awake, behaving animals.
Main Results:
- Individual whiskers are mapped to discrete units (barrels) in the somatosensory cortex.
- Sensory information processing varies within the barrel map according to behavior.
- State-dependent processing is prominent in cortical sensory pathways.
Conclusions:
- The whisker system offers insights into molecular and circuit-level bases of behavior.
- Understanding state-dependent processing is crucial for active sensory perception.
- This pathway is vital for studying experience-dependent plasticity and learning.
More Related Videos
Related Concept Videos
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...
01:14Motor 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.
01:22Lobes of the Cerebrum
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements.
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,...
01:31Organization of the Brain
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
01:15Functional Brain Systems: Limbic System
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...