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Limbic system Dr. Altdorfer Károly

Limbic system Dr. Altdorfer Károly. Limbus : border (ancient cortical area) The roles of limbic system Centers Inputs Outputs Function. The roles of limbic system: 1) Emotional reactibility: mood, behaviour (love-hate, anger, agression, joy and sadness etc.) 2) Instincts

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Limbic system Dr. Altdorfer Károly

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  1. Limbic system Dr. Altdorfer Károly

  2. Limbus: border (ancient cortical area) The roles of limbic system Centers Inputs Outputs Function

  3. The roles of limbic system: • 1) Emotional reactibility: mood, behaviour (love-hate, anger, agression, joy and sadness etc.) • 2) Instincts • -self preservation: food gathering, eating-drinking etc.; • -species preservation: sexual behaviour • 3) Autonomic organization • 4) Learning, memory • Centers • Inputs • Outputs • Function

  4. Centers: -Telencephalon (archi-, paleo-, neopallium) -Diencephalon (thalamus, hypothalamus, epithalamus) -Mesencephalon

  5. Centers: -Telencephalon (archi-, paleo-, neopallium) -Diencephalon (thalamus, hypothalamus, epithalamus) -Mesencephalon

  6. Centers: -Telencephalon (archi-, paleo-, neopallium) -Diencephalon (thalamus, hypothalamus, epithalamus) -Mesencephalon

  7. Hippocampus Klüver-Bucy-syndrome (bilat. temp. lobectomy): animals: agnosia, oral tendency, weak attention, hypersexuality, fearlessness. Humans: interest decreases

  8. Hippocampus

  9. Centers: -Telencephalon (archi-, paleo-, neopallium) -Diencephalon (thalamus, hypothalamus, epithalamus) -Mesencephalon

  10. Centers: -Telencephalon (archi-, paleo-, neopallium) -Diencephalon (thalamus, hypothalamus, epithalamus) -Mesencephalon

  11. Inputs: 1) Olfactory sytem (rhinencephalon) 2) Spinothalamic tract (skin contact) Cloth mother – wire mother (Harlow’s monkeys, 1959)

  12. Connections: Papez-ring Vicq d’Azyr tract • Korsakoff syndrome: • Mamillary body laesion • - amnesia (recent memory defects), • - disorientation, • - confabulation

  13. Connections: -Papez-ring -”Amygdaloid ring” (2 striae) -medial forebrain bundle (olfacto-hypothalamo-tegmental) -short connections Smellsalivation or  nausea, vomiting

  14. Outputs: 1) Extrapyramidal (reticular formation: via reticulospinal tr.) 2) Endokrine system (via hypothalamus) 3) Autonomic centers (reticular formation, DLF) 4) Cortex

  15. The roles of limbic system: 1) Emotional reactibility: mood, behaviour (love-hate, anger, agression) 2) Instints: self preservation: food gathering, eating-drinking etc.; species preservation: sexual behaviour 3) Autonomic organization 4) Learning, memory Self-stimulation: ‘maniac rat’ Reward mechanisms. Dopamine, endorphins. Drog addiction.

  16. The roles of limbic system: 1) Emotional reactibility 2) Instints 3) Autonomic organization 4) Learning, memory: imprinting: easier to save ifmotivation is given, emotional components!

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