Download T-34 in Combat Model Fan Encyclopedia No.6 vol.II by Zbigniew Lalak, Jacek Jackiewicz, Robert Sawicki PDF

By Zbigniew Lalak, Jacek Jackiewicz, Robert Sawicki

Pictures and precise layout drawings of the T-34 Tank. textual content in English and varnish.

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Additional resources for T-34 in Combat Model Fan Encyclopedia No.6 vol.II

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He proposed that the sneer, an expression of anger, evolved from the baring of the canine teeth prior to a biting attack. Over time, fighting postures expressed in the body and facial musculature come to signal the threat, rather than solely the enactment, of attack. Inhibition of the neuronal assembly triggering an aggressive posture and activation of neurons enabling opposing postures conveys the opposite emotion of friendliness or submissiveness. The substantial role of subcortical neuromodulators, such as norepinephrine, acetylcholine, and serotonin, in modifying aggressive propensities in humans likely developed from their phyologenetically ancient function in promoting relevant peripheral skeletal and autonomic processes relevant to conspecific displays.

Prolactin response to buspirone was inversely correlated with levels of ‘‘irritability’’ in patients with personality disorders, suggesting that decreased sensitivity of the 5-HT1A receptor may be responsible for components of impulsive–aggressive behavior in patients with personality disorders. Recently, genetic studies have provided further evidence of an important role of serotonin in aggression regulation. A polymorphism in the gene for tryptophan hydroxylase, the rate-limiting enzyme in the biosynthesis of serotonin, has been associated with suicidal behavior in impulsive alcoholic criminals and in individuals with major depression.

Electrical stimulation of upper brain stem nuclei in subhuman primates produces different fragments of aggressive facial expressions and vocalizations, dissociated from offensive or defensive behavior. Other brain stem circuits contribute to somatomotor patterns for gestures and approach and avoidance behaviors. Medullary sympathetic and parasympathetic nuclei exert direct autonomic effects on cardiovascular, respiratory, and gastrointestinal peripheral organ systems. In humans, however, full-fledged aggression-related behavior patterns are not produced at the brain stem level.

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