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Related Concept Videos

Somatosensory, Motor, and Association Cortex01:23

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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...
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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.
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A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
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Sensory Perception: Organization of the Somatosensory System01:11

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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:
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Somatosensation01:33

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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.
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Overview of Somatic Sensory Pathways01:29

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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.
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Updated: Feb 22, 2026

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention
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Cortical inhibitory interneurons control sensory processing.

Katherine C Wood1, Jennifer M Blackwell1, Maria Neimark Geffen1

  • 1Department of Otorhinolaryngology: HNS, Department of Neuroscience, University of Pennsylvania, Philadelphia, PA, United States.

Current Opinion in Neurobiology
|September 23, 2017
PubMed
Summary
This summary is machine-generated.

Cortical inhibitory neurons shape sensory processing by controlling excitatory neuron activity and modulating information based on behavior. Recent studies reveal their crucial role in sensory perception and brain function.

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Related Experiment Videos

Last Updated: Feb 22, 2026

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A Guide to In vivo Single-unit Recording from Optogenetically Identified Cortical Inhibitory Interneurons
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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • Mammalian sensory cortex features complex circuits of inhibitory and excitatory neurons.
  • Excitatory neurons primarily integrate and transmit information.
  • Inhibitory neurons modulate excitatory neuron function and exhibit context- and behavior-specific activity patterns.

Purpose of the Study:

  • To review recent findings on the functional roles of distinct cortical inhibitory neuron types.
  • To discuss the implications of these findings for understanding cortical circuit activity and information processing.

Main Methods:

  • Review of recent experimental studies across various sensory modalities.
  • Analysis of neurophysiological and behavioral data.

Main Results:

  • Distinct types of cortical inhibitory neurons play specific roles in sensory processing.
  • Inhibitory neurons control the stimulus selectivity of excitatory neurons.
  • Information processing in the cortex is modulated by inhibitory neurons based on behavioral state.

Conclusions:

  • Inhibitory neurons are critical for precise sensory information processing.
  • Understanding inhibitory neuron function is key to deciphering cortical circuit dynamics.
  • Inhibition significantly shapes neural computations and behavioral outputs in sensory systems.