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ELECTRICAL VARIATIONS DUE TO MECHANICAL TRANSMISSION OF STIMULI

Mechanical stimulation of Nitella often produces responses resembling propagated negative variations but traveling faster and going past a killed spot. They appear to result from a mechanical disturbance traveling along the cell and stimulating each spot it touches (i.e. the stimulus itself travels)...

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Detalles Bibliográficos
Autores principales: Osterhout, W. J. V., Hill, S. E.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1931
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141125/
https://www.ncbi.nlm.nih.gov/pubmed/19872599
Descripción
Sumario:Mechanical stimulation of Nitella often produces responses resembling propagated negative variations but traveling faster and going past a killed spot. They appear to result from a mechanical disturbance traveling along the cell and stimulating each spot it touches (i.e. the stimulus itself travels). They are called mechanical variations to distinguish them from propagated negative variations. A mechanical disturbance may cause an irreversible change (death wave), but in traveling along the cell it may lose intensity and then produce only a reversible response (mechanical variation) which may eventually change to a propagated negative variation. The all or none law does not apply to incomplete mechanical variations, for the response varies with the strength of the stimulus.