Cortical Structures of the Limbic System Most notable structuresPrimary function Orbitofrontal...
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Cortical Structures of the Limbic System Most notable structures Primary function Orbitofrontal gyri Very diverse Cingulate gyrus Emotion Isthmus Emotion + Memory Parahippocampal gyrus Memory Uncus Olfaction
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Transcript of Cortical Structures of the Limbic System Most notable structuresPrimary function Orbitofrontal...
Cortical Structures of the Limbic System
Most notable structures Primary functionOrbitofrontal gyri Very diverseCingulate gyrus EmotionIsthmus Emotion + MemoryParahippocampal gyrus Memory Uncus Olfaction
Subcortical Structures of the Limbic System
Most notable structures:Septal nucleiNucleus accumbensMammillary bodyAmygdalaDorsal thalamusHabenulaHippocampal formation
Most notable efferent pathways:FornixStria terminalisVentral amygdalofugalMammilothalamic
Hippocampal Formation
Afferent PathwaysPerforant
AlvearFornix
Efferent PathwaysFornix
Amygdaloid Complex
Afferent PathwaysCingulum
Stria TerminalisLateral oflactory stria
Efferent PathwaysStria TerminalisAmygdalofugal
Septal Nuclei & Nucleus Accumbens
Septal PathwaysMFB (A&E)
Stria terminalis (A)Fornix (A&E)
Stria medullaris (E)
Nuc. Acc. PathwaysMFB (A&E)
Stria terminals (A)Fornix (A)
Learning and Memory
Associative Learning Formation of associations between 2 features in the environment
Nonassociative LearningExperience produces changes in the magnitude of the response
Hebb’s Postulate:
Cells that fire togetherwire together; Cells thatfire out of sync lose theirlink
Cellular Mechanisms of Memory
Long-Term Potentiation Enhancement of synaptic efficacy following strong stimulation
