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Published byRoger Clarke Modified over 9 years ago
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Cortical Structures of the Limbic System Most notable structuresPrimary function Orbitofrontal gyriVery diverse Cingulate gyrusEmotion IsthmusEmotion + Memory Parahippocampal gyrusMemory UncusOlfaction
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Subcortical Structures of the Limbic System Most notable structures: Septal nuclei Nucleus accumbens Mammillary body Amygdala Dorsal thalamus Habenula Hippocampal formation Most notable efferent pathways: Fornix Stria terminalis Ventral amygdalofugal Mammilothalamic
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Hippocampal Formation Afferent Pathways Perforant Alvear Fornix Efferent Pathways Fornix
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Amygdaloid Complex Afferent Pathways Cingulum Stria Terminalis Lateral oflactory stria Efferent Pathways Stria Terminalis Amygdalofugal
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Septal Nuclei & Nucleus Accumbens Septal Pathways MFB (A&E) Stria terminalis (A) Fornix (A&E) Stria medullaris (E) Nuc. Acc. Pathways MFB (A&E) Stria terminals (A) Fornix (A)
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Learning and Memory Associative Learning Formation of associations between 2 features in the environment Nonassociative Learning Experience produces changes in the magnitude of the response
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Hebb’s Postulate: Cells that fire together wire together; Cells that fire out of sync lose their link Cellular Mechanisms of Memory Long-Term Potentiation Enhancement of synaptic efficacy following strong stimulation
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