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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor 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.
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, 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...
Somatosensation01:33

Somatosensation

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.
Association Areas of the Cortex01:21

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,...
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

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 playing an...

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Related Experiment Video

Updated: May 22, 2026

Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice
06:04

Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice

Published on: March 4, 2014

Multiple dynamic representations in the motor cortex during sensorimotor learning.

D Huber1, D A Gutnisky, S Peron

  • 1Janelia Farm Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, Virginia 20147, USA.

Nature
|April 28, 2012
PubMed
Summary
This summary is machine-generated.

Motor cortex neurons link sensory input to motor actions during learning. This study reveals how ensembles of these neurons integrate touch information with whisker and licking behaviors for task acquisition.

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Area of Science:

  • Neuroscience
  • Motor control
  • Sensorimotor integration

Background:

  • The precise mechanisms connecting sensory perception and motor execution during the learning process remain largely unclear.
  • Layer 2/3 neurons in the motor cortex are hypothesized to play a role in sensorimotor integration and learning due to their connectivity patterns.

Purpose of the Study:

  • To investigate the role of layer 2/3 motor cortex neurons in sensorimotor integration and learning.
  • To understand how neural representations evolve during the acquisition of a sensory detection and motor response task.

Main Methods:

  • In vivo calcium imaging was used to monitor the activity of individual layer 2/3 motor cortex neurons in mice over several weeks.
  • Mice were trained on a task requiring them to detect objects using their whiskers and respond by licking.
  • Analysis focused on population-level activity and the relationship between sensory input and motor output representations.

Main Results:

  • Spatially intermingled neurons within the motor cortex represented both sensory information (touch) and motor behaviors (whisker movement, licking).
  • With task learning, the population-level representation of licking behavior significantly strengthened.
  • In trained mice, population neural representations were found to be redundant and stable, contrasting with the dynamic nature of single-neuron representations.

Conclusions:

  • Ensembles of motor cortex neurons are suggested to couple sensory input to multiple, related motor programs during the learning process.
  • The findings provide insights into how the brain integrates sensory information with motor control for adaptive behavior.