Pneumatic evoked potential. Sensory or auditive potential?
Neurophysiol Clin
; 43(3): 189-95, 2013 Jun.
Article
in En
| MEDLINE
| ID: mdl-23856175
ABSTRACT
STUDY AIM:
In this study, evoked potentials (EPs) to a pneumatic, innocuous, and calibrated stimulation of the skin were recorded in 22 volunteers.METHODS:
Air-puff stimuli were delivered through a home-made device (INSA de Lyon, Laboratoire Ampère, CHU de Saint-Étienne, France) synchronized with an EEG recording (Micromed(®)).RESULTS:
A reproducible EP was recorded in 18 out of 22 subjects (82% of cases) with a mean latency of about 120-130ms, and maximal amplitude at Cz. This EP actually consisted of two components, an auditory and a somatosensory one. Indeed, it was significantly decreased in amplitude, but did not disappear, when the noise generated by the air-puff was masked. We also verified that a stimulation close to the skin but not perceived by the subject was not associated with any EP. Conduction velocity between hand and shoulder was calculated around 25m/s.CONCLUSIONS:
This preliminary study demonstrates that pneumatic EPs can be recorded in normal volunteers.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Physical Stimulation
/
Sensation
/
Evoked Potentials, Auditory
/
Evoked Potentials, Somatosensory
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Neurophysiol Clin
Year:
2013
Document type:
Article