Caloric stimulation of ampullar receptors: a new method to produce mechanically-evoked responses in frog semicircular canals.
J Neurosci Methods
; 88(2): 141-51, 1999 May 01.
Article
en En
| MEDLINE
| ID: mdl-10389660
ABSTRACT
A microthermistor positioned close to the exposed posterior semicircular canal in isolated labyrinth preparations of the frog was used to stimulate the sensory organ. Our results indicated that, depending on the position of the heater, the induced endolymphatic convection currents may result in either excitatory or inhibitory cupular deflections and thus in a modulation of ampullar receptor resting activity. Other possible thermal-dependent mechanisms, such as a direct action of the stimulus on vestibular sensors or endolymphatic volume changes, had, in the present experimental conditions, a minor role. Caloric stimulation could therefore represent a novel method to stimulate the semicircular canals 'in situ'.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pruebas Calóricas
/
Canales Semicirculares
/
Potenciales Evocados
Límite:
Animals
Idioma:
En
Revista:
J Neurosci Methods
Año:
1999
Tipo del documento:
Article
País de afiliación:
Italia