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Related Concept Videos

Postsynaptic Potential (PSP)01:32

Postsynaptic Potential (PSP)

Postsynaptic potential (PSP) refers to a change in the electrical potential of a neuron when neurotransmitters released by presynaptic neurons bind to postsynaptic receptors. This potential can either be excitatory, leading to depolarization and ultimately action potential generation, or inhibitory, leading to hyperpolarization and suppression of the postsynaptic neuron.
There are two types of receptors: ionotropic and metabotropic.
The ionotropic receptor is the membrane protein that has an...
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Graded Potential01:19

Graded Potential

Graded potentials are localized fluctuations in the cell membrane's electrical charge, commonly found in the dendrites of neurons. The magnitude of these potential changes depends on the strength of the initiating stimulus. In a membrane at its resting potential, a graded potential signifies a voltage shift either above -70 mV or below -70 mV.
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or calcium...
Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Sensory Modalities01:15

Sensory Modalities

Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
Action Potentials01:41

Action Potentials

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Related Experiment Video

Updated: May 9, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
11:39

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Published on: September 7, 2022

Pneumatic evoked potential. Sensory or auditive potential?

S Condé1, C Créac'h, X Brun

  • 1Department of Neurology, Neurophysiology and Pain Center, University Hospital, 42055 Saint-Étienne, France.

Neurophysiologie Clinique = Clinical Neurophysiology
|July 17, 2013
PubMed
Summary

Pneumatic evoked potentials (EPs) were successfully recorded in 82% of volunteers using a novel air-puff stimulation method. This preliminary study confirms the feasibility of using pneumatic stimuli to elicit measurable somatosensory and auditory responses.

Keywords:
Intégration multimodaleMethodologyMultimodal integrationMéthodologiePneumatic evoked potentialsPotentiels évoqués pneumatiquesSomatosensory systemSomesthésie

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06:56

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation

Published on: December 18, 2015

Area of Science:

  • Neuroscience
  • Somatosensory research
  • Auditory research

Background:

  • Evoked potentials (EPs) are crucial for assessing neural pathway function.
  • Non-invasive methods for eliciting and recording EPs are valuable for clinical and research applications.
  • Pneumatic stimulation offers a controlled, innocuous method for sensory input.

Purpose of the Study:

  • To investigate the feasibility of recording evoked potentials (EPs) using calibrated, innocuous pneumatic skin stimulation.
  • To characterize the latency, amplitude, and reproducibility of these novel EPs.
  • To differentiate the somatosensory and auditory components of the recorded EPs.

Main Methods:

  • Twenty-two healthy volunteers underwent pneumatic stimulation via a custom-built air-puff device.
  • Electroencephalography (EEG) recordings were synchronized with stimulus delivery.
  • Stimuli were delivered to the skin, and auditory masking was employed to differentiate response components.

Main Results:

  • Reproducible EPs were obtained in 82% of subjects (18/22), with a mean latency of 120-130ms and maximal amplitude at the Cz electrode.
  • The EP comprised both auditory and somatosensory components, evidenced by a significant amplitude reduction (but not disappearance) when auditory noise was masked.
  • Stimulation below the perception threshold did not elicit EPs, and hand-to-shoulder conduction velocity was estimated at approximately 25 m/s.

Conclusions:

  • This preliminary study demonstrates the successful recording of pneumatic evoked potentials (EPs) in human volunteers.
  • Pneumatic stimulation provides a viable, non-invasive method for eliciting measurable somatosensory and auditory neural responses.
  • Further research can explore the clinical applications of this technique for evaluating sensory pathway integrity.