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Related Concept Videos

Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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 stimulus...
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.

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Related Experiment Video

Updated: Jun 6, 2026

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation
06:56

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Published on: December 18, 2015

Multiple Coherence vs Multiple Component Synchrony Measure for somatosensory evoked response detection.

Danilo B Melges1, Antonio Mauricio F L Miranda de Sa, Antonio Fernando C Infantosi

  • 1Infantosi are with the Biomedical Engineering Program, Federal University of Rio de Janeiro, P. O. Box 68510, ZIP 21941-972, Brazil. danilomelges@yahoo.com

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|November 25, 2010
PubMed
Summary
This summary is machine-generated.

Multiple Coherence (MC) and Multiple Component Synchrony Measure (MCSM) were compared for detecting tibial nerve somatosensory evoked potentials (SEP). MC demonstrated superior performance over MCSM for SEP detection when two derivations are available.

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Published on: January 29, 2014

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Signal Processing

Background:

  • Somatosensory evoked potentials (SEPs) are crucial for assessing the integrity of the somatosensory nervous system.
  • Accurate detection of SEPs, particularly from the tibial nerve, is essential for clinical diagnosis.
  • Multivariate Objective Response Detection (MORD) techniques offer advanced methods for signal analysis.

Purpose of the Study:

  • To compare the performance of two frequency-domain MORD techniques: Multiple Coherence (MC) and Multiple Component Synchrony Measure (MCSM).
  • To evaluate these techniques for detecting tibial nerve SEPs.
  • To determine which technique is more effective for SEP detection using electroencephalographic (EEG) data.

Main Methods:

  • Collected EEG signals from 40 adult volunteers during tibial nerve stimulation.
  • Applied current pulses (200 µs width) at 5 Hz to the right posterior tibial nerve.
  • Utilized MC and MCSM techniques on EEG derivation pairs ([Cz][Fz] and [C3][C4]).
  • Assessed response detection by rejecting the null hypothesis of absence (M=100, M=800 epochs, α=0.05).

Main Results:

  • Multiple Coherence (MC) consistently outperformed the Multiple Component Synchrony Measure (MCSM).
  • MC's superior performance was observed irrespective of the derivation pair used ([Cz][Fz] or [C3][C4]).
  • The number of epochs (M=100 or M=800) did not alter MC's advantage over MCSM.

Conclusions:

  • Multiple Coherence (MC) is a more effective MORD technique for tibial nerve SEP detection compared to MCSM.
  • MC demonstrates robust performance across different derivation pairs and epoch counts.
  • It is recommended to use MC for SEP recording when two derivations are available.