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PubMed · 7199486

[Emotional-defensive behavior and noradrenergic forebrain structures].

A F Nikiforov·G G Kniazev·Z S Tolochko
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Abstract

Conditioned avoidance responses in rats increase the noradrenaline expenditure in forebrain. The animals which reproduce no conditioned response after learning as well as the animals with ECS-induced retrograde amnesia preserve the noradrenergic terminals reaction as well as the emotional component of the conditioned response. The extinction of the emotional component by repeated testing or diazepam administration decreases the noradrenergic terminals activation. The data obtained support the view of the noradrenergic system participation in emotional--defensive behaviour.

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Amnesia, RetrogradeAnimalsAvoidance LearningConditioning, ClassicalEmotionsHistocytochemistryHumansHypothalamusLimbic SystemMaleMicroscopy, FluorescenceNorepinephrineRatsRats, Inbred StrainsEnglish AbstractJournal Article

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A F Nikiforov, G G Kniazev, Z S Tolochko. 1981. [Emotional-defensive behavior and noradrenergic forebrain structures].. https://pubmed.ncbi.nlm.nih.gov/7199486/

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[Comparison of retrograde amnesia changes within different injury levels of cerebral concussion in rats].

OBJECTIVE: To investigate the retrograde amnesia changes within different injury levels of cerebral concussion in rats. METHODS: A metallic pendulum striker device of brain injury was deployed to duplicate CC models of different injury levels within Sprague-Dawley (S-D) rats. The investigated animals were divided into two groups according to classification standard, that is, Pure Cerebral Concussion (PCC) group and Complicated Cerebral Concussion (CCC) group. One control group was used, and each group included 8 animals. The retrograde amnesia of each group was assessed by Morris Water Maze (MWM) Test from 3 days preinjury to 7 days postconcussion. RESULTS: Compared with the control group, the retrograde amnesia was detected within 3 days in PCC group, and 5 days in CCC group after injury. At the same time, the two groups both manifested space recognition deficit. CONCLUSION: The retrograde amnesia existed in both pure cerebral concussion group and complicated cerebral concussion. Furthermore, the lasting time of retrograde amnesia in animals correlates to the injury level of brain concussion.

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