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  • 1
    Electronic Resource
    Electronic Resource
    Effect of amygdalectomy on sensomotor cortical evoked potentials in cats (1983)
    Springer
    Neuroscience and behavioral physiology 13 (1983), S. 108-113 
    Details
    ISSN: 1573-899X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Conclusion 1. Destruction of the amygdaloid body leads to disturbance of the dependence of the amplitude and probability of appearance of EP on the filling frequency of the tonal volley established in intact animals; maximal values of amplitude and probability of appearance of EP at frequencies of O.8 and 1.6 kHz and between 2.0 and 3.0 kHz are not found in amygdalectomized cats. 2. It is postulated that integrity of the amygdaloid body is an essential condition for the normal functioning of the sensomotor cortex, which is a component of the system distinguishing the biological significance of an acoustic stimulus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190793
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Alimentary conditioned reflexes in dogs on activation and blockage of the cholinoreactive amygdaloid system (1989)
    Springer
    Neuroscience and behavioral physiology 19 (1989), S. 459-465 
    Details
    ISSN: 1573-899X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Conclusions 1. Chemical stimulation of the basolateral area of the amygdala by acetylcholine at a dose of 300 μg, carbocholine at a dose of 0.5 μg, and atropine at a dose of 60 μg changes the production of the secretory component of alimentary reactions but has no effect on the production of the instrumental component. 2. Activation of the cholinoreactive system of the amygdaloid complex in dogs has an inhibiting action and blockage an activating action on the production of alimentary secretory conditioned reflexes; in the case of a decrease in the value of the total conditioned reflex salivation, differentiation is improved, while in the case of an increase in this value it is impaired. 3. On blockage and activation of the cholinoreactive system of the basolateral area of the amygdala, the ratio of the conditioned reflex salivation in response to different stimuli presented in a stereotype order (dynamic stereotype) changes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01181859
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The participation of mediator and peptidergic systems of the brain in conditioned reflex mechanisms (1990)
    Springer
    Neuroscience and behavioral physiology 20 (1990), S. 365-370 
    Details
    ISSN: 1573-899X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract New data on the significance of mediator and peptidergic systems of the striatal level in the organization of alimentary conditioned reflexes are presented in this report. The role of acetylcholine-, dopamine-, GABA- and P- ergic systems of the caudate nucleus and the amygdala in the realization of positive and negative conditioned reflexes was investigated. The experiments were carried out on dogs with chemotrodes and microelectrodes implanted in subcortical structures. The results of the experiments with microinjections of the relevant substances into individual subcortical structures showed that activation of the same mediator system in various structures may lead to both unidirectional and multidirectional behavioral effects. On the other hand, the activation of various subcortical mediator systems can lead to identical changes in conditioned reflex activity. The effect of the administration of activators or blockers of a subcortical mediator system depends in many ways on the functional state of the nervous system at the moment of administration and on the localization of the microinjection. It is difficult to predict beforehand the role of various subcortical structures in the organization of integrated behavioral acts. The question of the necessity of studying mediator and peptidergic systems of each subcortical structure in order to understand their significance in the mechanisms of the conditioned reflex is raised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01236334
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Involvement of the amygdala in evaluating the biological significance of conditioned stimuli (1985)
    Springer
    Neuroscience and behavioral physiology 15 (1985), S. 494-501 
    Details
    ISSN: 1573-899X
    Keywords: amygdala ; conditioned signals ; activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The destruction of the amygdala in cats and dogs causes the animals to stop responding adequately to signals of various biological significance; the curves of change in the amplitude and probability of appearance of EPs in the sensorimotor cortex lose the maxima characteristic of intact animals at frequencies of 0.8, 1.6, and in the band from 2.0 to 3.0 kHz, which are the formant frequencies of certain communicational signals in cats. The assumption of a signal (food) significance by an indifferent stimulus, earlier without any biological meaning, finds reflection in the neuronal activity of the amygdala, which begins to respond to this signal as if to an unconditioned stimulus. On the basis of the above factors, the role of the amygdala is discussed in the evolution of the biological significance of conditioned stimuli and the differentiation of the afferent influences that reach it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01184260
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    Paper (German National Licenses)
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