Amphetamine attenuation of tonic immobility in chickens
نویسندگان
چکیده
منابع مشابه
Cholinergic blockade and tonic immobility in chickens
To investigate the effects of cholinergic blockade on duration of tonic immobility (TI) and habituation to handling and the TI testing procedure, two groups of cockerel chicks were tested following injection with scopolamine or saline. One week later half of each group was given a second test for TI following injection with saline or scopolamine. Results indicated that scopolamine significantly...
متن کاملTraumatic events and tonic immobility.
Tonic immobility is a basic defense strategy which has not been studied in depth in humans. Data suggest that it may be a relatively frequent phenomenon in victims of rape and sexual abuse, but its occurrence has not been systematically explored in other types of trauma. We carried out a retrospective study in a sample of 100 university students to establish whether tonic immobility varies depe...
متن کاملPredictors of tonic immobility during traumatic events
Título: Predictores de la inmovilidad tónica ante eventos traumáticos. Resumen: La inmovilidad tónica (IT) es una posible reacción ante el peligro que es facilitada por el miedo intenso, la restricción física y la incapacidad percibida de escapar. Otras variables que podrían influir, tales como el tipo de eventos traumáticos, características de los mismos y características personales han sido p...
متن کاملOn the Mechanism of Tonic Immobility in Vertebrates
Tonic immobility (Crozier, 1923), often more popularly known as "playing possum," "animal hypnosis," or even "feigning death," is exhibited by a great variety of animals. Rabaud (1919) discusses at length the condition as seen in arthropods. He points out that most arthropods have regions of the body which seem to be the loci of tactually excitable reflexes causing the animal to pass into a sta...
متن کاملEffect of lighting stress on fluctuating asymmetry, heterophil-to-lymphocyte ratio, and tonic immobility duration in eleven breeds of chickens.
The purpose of the present study was to analyze the effect of a lighting stress on the fluctuating asymmetry (FA), the heterophil-to-lymphocyte ratio, and the tonic immobility duration of chickens. The experiment (440 birds) measured the FA of several traits (outer, middle, inner, and hind toe lengths and leg, wing, second primary feather, and spur lengths), the heterophil-to-lymphocyte ratio, ...
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ژورنال
عنوان ژورنال: Physiological Psychology
سال: 1976
ISSN: 0090-5046
DOI: 10.3758/bf03326589