INVESTIGADORES
LOZADA Mariana
artículos
Título:
Long-term habituation to a danger stimulus in the crab Chasmagnathus granulatus.
Autor/es:
MARIANA LOZADA; ARTURO ROMANO; HECTOR MALDONADO
Revista:
PHYSIOLOGY AND BEHAVIOR
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 1991 vol. 47 p. 35 - 41
ISSN:
0031-9384
Resumen:
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A shadow moving overhead acts
as a danger stimulus and elicits an escape response in the crab Chasmagnatus granulatus, that habituates
after 15 stimulus presentations at 3 min interval. Here, the habituation was
induced by three diverse shadow stimuli and the behavioral response persisted
after 24 hs. This long-lasting effect failed to appear if the testing stimulus
did not keep the same spatial specificity as that of the training one. A
partial stimulus generalization was detected when training and testing differed
in size. The adaptive value of this danger stimulus specificity is discussed. Extinction of the
long-term habituated response failed to occur although crabs were exposed to
the context in the absence of danger stimulation
