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Related Concept Videos

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,...
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...
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.
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.
Lobes of the Cerebrum01:22

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.
Functional Brain Systems: Limbic System01:15

Functional 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...

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Related Experiment Video

Updated: May 31, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Generalized associative representations in parietal cortex.

Jamie K Fitzgerald1, David J Freedman, John A Assad

  • 1Department of Neurobiology, Harvard Medical School, Boston, Massachusetts, USA.

Nature Neuroscience
|July 19, 2011
PubMed
Summary
This summary is machine-generated.

Neurons in the lateral intraparietal area (LIP) represent learned associations between visual stimuli, like shapes and motion directions. This suggests LIP neurons may encode general categorical outcomes, crucial for decision-making.

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Last Updated: May 31, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Primate Behavior

Background:

  • Forming associations between sensory stimuli is vital for adaptive behavior.
  • Previous research indicated that neurons in the lateral intraparietal area (LIP) of Macaca mulatta encode learned associations between visual motion directions.
  • It remained unclear if LIP neurons encode stimulus-specific associations or more generalized associations for decision-making.

Purpose of the Study:

  • To investigate whether LIP neurons encode learned associations between static visual shapes.
  • To determine if the same LIP neurons also encode associations between motion directions.
  • To explore if LIP neurons represent generic categorical outcomes.

Main Methods:

  • Electrophysiological recordings were performed in the LIP of Macaca mulatta.
  • The study employed tasks dissociating visual associations from motor responses.
  • Neural activity was recorded during tasks involving learned associations between static shapes and between motion directions.

Main Results:

  • LIP neurons robustly encoded learned associations between pairs of static shapes.
  • Neurons selective for shape-pair associations also tended to be selective for motion direction associations.
  • Evidence suggests LIP neurons are involved in representing abstract, categorical information.

Conclusions:

  • The lateral intraparietal area (LIP) plays a role in representing learned associations beyond specific sensory features.
  • Findings support the hypothesis that parietal neurons contribute to representing generic categorical outcomes.
  • This generalization capability is fundamental for complex decision-making processes.