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Related Concept Videos

Somatosensation01:33

Somatosensation

42.7K
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.
42.7K
Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

1.9K
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...
1.9K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

6.5K
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....
6.5K
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

7.9K
Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
7.9K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

10.8K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
10.8K
Association Areas of the Cortex01:21

Association Areas of the Cortex

8.4K
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,...
8.4K

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Related Experiment Video

Updated: Dec 23, 2025

Brain Mapping Using a Graphene Electrode Array
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Mapping of the Somatosensory Cortex.

Faisal R Jahangiri1,2, Katharine Pautler3, Keri Watters3,4

  • 1Neurophysiology, Axis Neuromonitoring, Richardson, USA.

Cureus
|April 22, 2020
PubMed
Summary

Intraoperative sensory cortical mapping (CsM) reliably identifies the central sulcus, preventing neurological deficits during brain surgery. This safe technique aids neurosurgeons in preserving eloquent brain tissue and function.

Keywords:
cortical sensory mappingintraoperative neuromonitoringionmneurophysiologysensory cortexsomatosensory evoked potentialsssep

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Area of Science:

  • Neurosurgery
  • Neurophysiology
  • Brain Mapping

Background:

  • Intraoperative sensory cortical mapping (CsM) is crucial for locating the central sulcus (CS) near eloquent brain areas.
  • Accurate CS localization prevents postoperative neurological deficits by identifying the somatosensory cortex.

Purpose of the Study:

  • To outline the benefits and detailed methodology of CsM.
  • To emphasize CsM's role in preventing neurological injury during neurosurgical procedures.

Main Methods:

  • Utilizing intraoperative sensory cortical mapping to functionally localize the central sulcus (CS).
  • Identifying the somatosensory cortex for both upper and lower limbs through CS identification.

Main Results:

  • CsM is a reliable and safe method for functional localization of the CS.
  • Proper execution allows identification of the somatosensory cortex for both upper and lower limbs.

Conclusions:

  • CsM is vital for injury prevention during brain surgeries near eloquent tissue.
  • A trained intraoperative neuromonitoring team is essential for accurate signal interpretation and successful CsM application.