The effect on affective and cognitive behavior in the dog of lesions of the pyriform-amygdala-hippocampal complex.

Amygdaloid function in the central cholinergic mediation of shock-induced aggression in the rat

“…Bilateral amygdaloid lesions have been shown to decrease social dominance in monkeys (Rosvold et al, 1954), decrease social dominance in dogs (Fuller et al, 1957), and decrease aggressive behavior in male golden hamsters (Bunnell et al, 1970).…”

Effect of Amygdaloid Lesions on Oestrous Behaviour in the Deermouse

“…The major effect on female behaviour following amygdaloid lesions is the disruption of maternal behaviour. In instances where an amygdalectomized monkey has given birth, the infant has a limited chance of survival (Walker et al, 1953;Masserman et al, 1958 (Brady et al, 1954;Fuller et al, 1957;Green et al, 1957;Masserman et al, 1958;Wood, 1958;Anand et al, 1959;Kling et al, 1960;Orbach et al, 1960). No precocious ovarian stimulation following amygdaloid lesions was noted as has been reported for the rat by Elwers & Critchlow (1960 …”

“…Many investigators have found that a few weeks after bilateral ablation of the amygdala males become hypersexual (Brady, Schreiner, Geller & Kling, 1954;Fuller, Rosvold & Pribram, 1957;Green, Clemente & DeGroot, 1957;Masserman, Levitt, McAvoy, Kling & Pech tel, 1958;Wood, 1958;Anand, Malhotra, Singh & Dua, 1959; Kling, Orbach, Schwartz & Towne, 1960;Orbach, Milner & Rasmussen, 1960). Several other authors, however, have found that amygdalectomy causes a decrease in sexual behaviour (Thompson & Walker, 1950, 1951Walker, Thompson & McQueen, 1953;Kling & Schwartz, 1961).…”

Psychiatric Aspects of Epileptic and Brain-damaged Children--II

“…Green and Kaada both think there is some evidence of localization of function within the amygdaloid region, but there is as yet no convincing human clinical evidence on this point. Several authors (for example, Fuller et al, 1957) have stressed that the circumstances under which the behaviour of the animals with brain lesions is studied is also of importance-a fact which, of course, agrees closely with clinical observation of human cases. In addition to the changes in respect of emotion, Green et al (1957), for example, think that many of the changes in the behaviour seen with amygdala lesions in cats are due to disturbances of consciousness, and he compares their activity with disturbances of behaviour seen in psychomotor epileptics.…”