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Exploring the Limbic System: Emotion and Memory Components

Dive into the intricate components of the limbic system, unraveling the core of emotional feelings and memory processing. This vast network includes the cortical part of the emotion system, the amygdala as a key integrator, the limbic basal ganglia, the dorsomedial nucleus of thalamus, and more. Discover how emotions and memories are intertwined through neural circuits and microscopic structures within the brain.

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Exploring the Limbic System: Emotion and Memory Components

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  1. Lab 12 THE EMOTION AND MEMORY COMPONENTS OF THE LIMBIC SYSTEM

  2. emotional feelings and expression, includes: • a) cortical part of emotion system :    • anterior cingulate gyrus • medial prefrontal cortex          • orbitofrontal gyri    • b) amygdala (key integrator and “grader” of incoming sensory information • c) ventral or limbic basal ganglia : • ventral striatum (nucleus accumbens) • ventral pallidum (output nucleus) • d) dorsomedial nucleus of thalamus • e) hypothalamus - nodal point in organizing visceral & somatic emotion responses. • The emotions structures are connected by • bundles of fibers that include: • •  the cingulum (cortico-cortical connections) • •  the ventral amygdalofugal path (VAPF) for input/output of the amygdala •  the stria terminalis (for communication of the amygdala with the septal area and hypothalamus •   -   the medial forebrain bundle (MFB), the multifunctional ascending and descending tract in the lateral hypothalamus

  3. GROSS BRAIN: EMOTION STRUCTURES

  4. Haines 2-24 Anterior Cingulate Cortex Anterior Cerebral Artery Medial Prefrontal Cortex Anterior Cerebral Artery Orbital frontal cortex Anterior Cerebral Artery

  5. Haines 2-17 Orbital frontal cortex Anterior Cerebral Artery Telencephalic area of basal forebrain Diencephalic area of basal forebrain

  6. MICROSCOPIC STRUCTURES OF THE EMOTION PART OF THE LIMBIC SYSTEM

  7. Haines 5-36a Anterior Cingulate Cortex

  8. Haines 5-37a Anterior Cingulate Cortex medial prefrontal cortex orbitofrontal gyri

  9. Haines 5-35a Anterior Cingulate Cortex cingulum septum pellucidum Septal Nuclei anterior commissure hypothalamus (anterior area) Basal forebrain

  10. Haines 5-34 ventral amygdalofugal path (VAPF) lateral hypothalamic area With medial forebrain bundle amygdala

  11. Haines 5-31a Cingulate Gyrus dorsomedial nucleus of the thalamus cingulum stria terminalis

  12. A NEURAL CIRCUIT FOR FEAR

  13. Haines 4-13

  14. Haines 4-14 Parahipocampal gyrus general area of the inferior temporal cortex

  15. Haines 5-34 Uncus Amygdaloid nucleus

  16. Haines 5-33 stria terminalis

  17. Haines 5-34 ventral amygdalofugal path (VAPF) lateral hypothalamic area With medial forebrain bundle

  18. Haines 5-35a Anterior Cingulate Cortex cingulum septum pellucidum Septal Nuclei anterior commissure Hypothalamic nuclei w/ Periventricular nuclie Basal forebrain

  19. Haines 5-11 dorsal motor nucleus of the vagus Midrostral Medulla Level

  20. Haines 5-20 Locus ceruleus parabrachial nucleus Rostral Pons Level

  21. Haines 5-25 ventral tegmental area (VTA Tegmentum Rostral Midbrain Level

  22. MainTrigeminal Motor Nucleus Supplies muscles of mastication Haines 5-19 Rostral Pons Level

  23. Haines 5-18 Facial motor nucleus Rostral Pons Level

  24. Haines 5-23 Caudal Midbrain Level

  25. MICROSCOPIC STRUCTURES: DECLARATIVE MEMORY SYSTEM

  26. Haines 5-33 internal medullary lamina anterior nucleus of thalamus temporal (inferior) horn of lateral ventricle fimbria of fornix parahippocampal gyrus hippocampal formation alveus

  27. Haines 5-33 body of fornix

  28. Haines 5-32 fornix Lateral v. anterior nucleus of thalamus 3rd Mammilary body mammillothalamic tract

  29. Haines 5-35a fornix Septal Nuclei anterior commissure hypothalamus (anterior area) Basal forebrain

  30. Haines 5-34 fornix Uncus Amygdaloid nucleus

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