Emotional Stress in Monkeys

2-hour immobilization according action activity adaptation adrenal adreno-cortical allows amounts animals beginning behavior biological blood brain catecholamines caused comparison complex concentration conducted correlation corresponding cycle daily decrease dependence differences discharge disturbances dynamics effect emotional stress endocrine function established et al excretion experimental experiments expression extreme factors functional furthermore GGAKS glands gluco-corticoids Goncharov hamadryas hormonal hydrocortisone Illustration immobilization important increase indicates individual influence initial injection intervals introduction L-DOPA leading length males manifest mechanisms mediator monkeys nature neuroendocrine normalization noted observed obtained occurs organism papio hamadryus pathological period physiological possibility predecessors preliminary preparation prevented processes produced pronounced reaction reduction regulation relative reliable repeated repeated stress resistance response restoration revealed role secretion severe shown significant similar steroid stress applications stress irritants stress stimulants structures suppression sympatho-adrenal testes testosterone third urine values various