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Somatosensory, Motor, and Association Cortex

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...

Motor and Sensory Areas of the Cortex

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.

Association Areas of the Cortex

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,...

Lobes of the Cerebrum

Lobes 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.

Role of Cerebellum and Prefrontal Cortex in Memory

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...

Parallel Processing

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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...

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Related Experiment Video

Updated: Jul 3, 2026

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Published on: September 11, 2017

Posterior parietal cortex: an interface between attention and learning?

David J Bucci¹

¹Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03755, USA. david.j.bucci@dartmouth.edu

Neurobiology of Learning and Memory

|August 5, 2008

Summary

This summary is machine-generated.

The rat posterior parietal cortex (PPC) may be homologous to primate PPC, potentially aiding attention and working memory. Further research is needed to clarify its role in behavior and learning.

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Last Updated: Jul 3, 2026

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Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

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Published on: July 5, 2015

Area of Science:

Neuroscience
Comparative neuroanatomy

Background:

The posterior parietal cortex (PPC) in rats is defined by thalamic and cortical connectivity.
Anatomical similarities suggest homology with primate PPC.

Purpose of the Study:

Review evidence for the rat PPC's role in attention and working memory.
Compare rat PPC function to primate PPC.
Explore theories of rat PPC function, including its role in attention-learning interface.

Main Methods:

Literature review of anatomical and functional studies on rat and primate PPC.
Comparative analysis of connectivity patterns and behavioral functions.

Main Results:

Evidence supports and refutes a role for rat PPC in attention and working memory.
Functional comparisons with primate PPC are ongoing.
Theories propose PPC as an attention-learning interface.

Conclusions:

The rat PPC's homology to primate PPC warrants further investigation.
Clarifying the rat PPC's function in attention, working memory, and learning is crucial.
Future research should explore these functional aspects and comparative roles.